Clear. 4) in the pouring, construction joint coarse Xianpu with cement slurry layer. (2) in the template is construction joint position poker opening, to clear the debris and flushing. The construction in winter, such as snow, with hot gas injection after clean, sawdust and other debris, but high pressure air alternative blowing. All clean, then opening will be a seal plate, and put the cement slurry, pouring concrete. (3) the equipment foundation to bear the motive force of the construction joints to the following treatment. 1) vertical construction joints shall be reinforced rebar inserted, diameter of 12-16 mm, 500-600 mm in length. Spacing of 50 mm in steps or vertical construction joints should be reinforced in terpolation. 2) concrete construction joint surface should be cut hair, rinse water to fully wet, wipe a layer of 10-15 thick cement mortar, the strength grade of cement and concrete foundation and the same. Then continue pouring concrete 3). Two different elevation level construction joints, the joints should be retained or stepped, high level than the width of not more than 1.8, concrete shrinkage cracks of concrete preventive measures (1) prepared to strictly control the water cement ratio and cement content, with good gradation and sand ratio, stir evenly, vibration compacting. Before pouring water basic level and template moist. After pouring timely serious maintenance. In the concrete surface spray once metachloride emulsion curing agent, or covered with plastic film. The high temperature, low humidity weather construction or wind speed, pouring water in time after curing, but should not use the water temperature is too low directly pouring the concrete surface. (2) the concrete vibration to the full, but not too much. (3) after the initial set of concrete before the final set of two times wiping pressure, but avoid the withdrawal of dry cement concrete surface scraping. (4) because of the project for the whole cast structure, Liang Cemo support frame and beam plate bearing supporting frame separately The erection, Liang Cemo is removed in a timely manner, maintenance. 9, control measures (1) ground Konggu strict treatment (bottom cushion or base)
1) carefully clean the surface dust, plasma membranes and other dirt, and rinse clean. Such as the underlying surface too smooth, chiseling. At the entrance to the brick layer is too high when should tick chisel.
2) the control of grass-roots smoothness, 2m straightedge check, the smoothness should not be greater than 10 mm, to ensure uniform thickness of surface consistent prevent thickness disparity is too large, resulting in the setting and hardening of uneven shrinkage and cracks, hollowing. 3) surface construction 1-2 days, deal with the basic seriously in watering humid at the grassroots level has a clean, moist, rough surface. (2) pay attention to the combination of layer construction quality:
1)素水泥浆结合层在调浆后应均匀涂刷,不宜采用先撒干水泥面后浇水 的扫浆方法.素水泥浆水灰比以 0.4-0.5 为宜. 2)刷素水泥浆应与铺设面层紧密配合,严格做到随刷随铺.铺设面层时, 如果素水泥浆已风干硬结,则应铲去后重新涂刷. 3)在水泥炉渣或水泥石灰炉渣垫层上涂刷结合层时,宜加砂子,其配合 比可为水泥:砂子=1:1(体积比)刷浆前,应将表面松动的颗粒扫除干净. (3)保证炉渣垫层和混凝土垫层的施工质量: 1)拌制水泥炉渣或水泥石灰炉渣垫层应用\"陈渣\" ,严禁用\"新渣\" .所 谓\"陈渣\" ,就是从锅炉排出后,在露天堆放,经雨水或清水,石灰浆焖透的 炉渣. \"陈渣\"经水焖透,石灰 Sediment digestion ripening, stable performance, is conducive to the quality of the ground. 2) slag before use should be screened, the maximum particle size should not exceed 40 mm, and the thickness of cushion shall not exceed 5 mm in diameter of 1/2. or less, shall not exceed the total volume of 40%. slag should not contain organic and unburned the slag slag stewing coal. 'when the stew through time should not be less than 3 5d.) should be in the use of lime at 3-4d with water and curing, sieving, the maximum grain size not greater than 5 mm. 4) cement slag mix cement slag should be used: =1:6 (volume ratio); cement lime slag mix ratio should be used in cement: Lime slag =1:1:8 (volume ratio), mixing evenly, strictly control the use of water. After installation, suitable for rolling roller surface to pan pulp, and wood trowel rub even. There should be no surface loose particles. The laying thickness of not less than 60 mm. The thickness of surface. 120 mm Should be layered laying. 5) in the cushion slag buried pipeline, pipeline surrounding the application of fine stone concrete full-length stable. 6) cushion slag laying on the concrete base, before laying should be first on the substrate coating of cement ratio is 0.4-0.5 of plain cement slurry again, with coated with the spread of, after laying timely take flat compaction. 7) cushion slag after laying, should do a good job in a timely maintenance, the maintenance period should avoid being influenced by water erosion.
The compressive strength reached 1.2MPa, can carry out the procedure construction. 8) concrete cushion plate application vibrator, irregularities, application of cement mortar or fine stone concrete leveling. (4) winter construction such as the use of stove heating stove under maintenance, to stand high, hanging above iron, avoid the local temperature is too high and the mortar or concrete excessive water loss, resulting in the hollowing. 10, plastering ash foaming, flowering, wiping the grain control measures (1) received a face to be ash 5-6 into dry after dry ash; such as weak flood should be moist; cover by Yin and Yang at the corner, the first vertical scraping again, then sideways scraping second times leveling, yin and yang angle respectively with corner trowel and corner float through light, wall and iron float pressure again, and then along the lines of light pressure float. (2) cement mortar overlay, application of 1:2-1:2.5 cement mortar, to wipe the foundation gray, second Stuck in the slow recompression after hollowing ash dry rub skin and Xie Guaping scraping day cover. The first thin wipe again, followed by wiping the second times (twice the total thickness of about 5-7 mm), wood trowel Cuo Ping steel float shall be used to pressure on the light. When the background ash, cover lines is not easy to the pressure of light, to exert oneself conference cause the cover surface and bottom separation, so should be watering. When the bottom layer is not wet water, cover the gray water collection, the same day if not pressure light survival and sprinkle the 1:2 dry cement sand cover ash water, to be dry cement sand suction, the layer of cement mortar scraped after recompression light.(3) with lime paste, sieve filtration Ash Leaching application is not greater than 3 x 3 mm hole, not less than 30d when ripening lime; strictly containing uncured particles of lime paste by grinding
lime powder should also advance 1-2D into lime paste. The 11 part, the control measures (Water Leakage parapet 1) the corner shall be made between the vertical surface and obtuse angle, membrane level should be layered overlap. (2) nog, peg to anti-corrosion treatment, should be set firmly. Closing coil nail (3) with precast reinforced concrete slab capping plate should be seam between application of asphalt binder or ointment (4 seam.) the vertical spread out sand process shall not omit the mung bean, and to do a good job. Sixteen the construction period and construction schedule, the total construction schedule of the project according to the planned duration of 240 days, because the time is tight, a large amount of engineering, which belongs to the area of the building, the company will actively Organization of human, material, financial, and completed on time and according to quality construction task. In order to enable owners to invest in the construction of the project as soon as possible to play a role, will the projects are listed as a class of our application
In engineering, manpower, material resources, financial resources to focus on investment, supplemented by the efficient organization and management of the construction. In two, the construction sequence and construction schedule according to the characteristics of the main structure of the project, the structure for the pilot project, the implementation of a piecewise planar, three-dimensional character layer, construction method of synchronous cross flow, schedule to logic the cross-linking process, properly, sub schedule the project successfully completed. 1, parallel line, parallel along the water, according to the project requirements, we must consider the labor, material, machine tool needs, as far as possible each process continuous operation. 2, the vertical line segment to the main structure of the types of cross flow. The main process is as follows: put the line pouring concrete formwork with reinforced masonry reinforcement test line
Concrete curing and demoulding
3, cross operation project according to the engineering characteristics and engineering needs, combined with the technical equipment and labor organization of the basic method is as follows: when the main body layer increased to five at the end of the insertion touch ash project, from the bottom to the top with follow up, after the completion of the main project to roof engineering construction, wall plastering engineering from top to bottom, everything in good order and well arranged. Complete interior decoration and water, electricity, equipment installation engineering, achieve internal and external integration, scientific construction, to ensure that the duration and quality. Three, the total duration of control method using phase management node control method, namely the total duration after calculation, using the countdown stage, the formation of several key nodes, on the basis of general construction schedule network diagram well, the formation of the year, month, day, week, no matter what the key line, leading process for any reason behind schedule, we must take effective measures to recover the loss in this node The lost time, must not be allowed to schedule management out of control of the situation, and the development of the project time management and project staff income is directly linked to the reward and punishment measures, make the project all those involved in accounting for people with establish the concept of time first. Construction schedule arrangement: according to the work norm and the company many years of construction
experience, the construction schedule arrangement are as follows: construction preparation stage: the foundation period of 10 days, 35 days main stage: 105 days of roof structure and waterproof: 30 days decorative plastering stage: 50 days (interspersed with on the subject)
The final acceptance stage: 10 10+35+105+30+50+10=240 days in the network diagram of the construction schedule of schedule four, ensure project implementation measures (1) organizational security measures: 1, the strict implementation of the project management, the establishment of a rigorous scientific attitude, comprehensive technical knowledge, rich experience in construction management of the project manager in the construction process with the construction units, design units, supervision units to cooperate closely, in strict accordance with the construction drawings and construction organization design and construction, from the organization to ensure the progress achieved. 2, implementation of the target decomposition, the responsibility to the people, the project manager will be responsible for the implementation of the schedule, deputy manager and professional foreman specific implementation. The implementation of responsibility and interests combination to do sales, cash rewards, mobilize all the staff working enthusiasm and working enthusiasm. 3, establish a weekly site example system, by the relevant company The project department, all dry management teams are in charge of, for the previous week work summary and comment, arrange and implement the work next week. 4, complete the regular inspection plan, including project schedule management and supply of materials; timely detection and treatment of factors that affect the progress, the progress of the time lag adopt measures, organize deadline limit, effectively avoid the lag accumulated, which can not guarantee the duration of the phenomenon. (two) from 1 to guarantee the construction schedule, the construction area of the construction project is small, relatively fixed personnel, equipment, materials and scientific and reasonable allocation, compact organization of alternate construction, and strive to gain time from the architectural space. 2, to implement target management, strictly control the construction progress in stages, with the total progress as the basis, grasp the key line of control, to plan as a leader, the implementation of the long program Technology readiness to short arranged by season, month and ten day plan layout and implementation, to ensure that the total duration of the realization of. 3, timely formulated and approved materials preparation plan, doors and windows, iron processing plan to meet the ordering, processing must be time to ensure component can be scheduled to install and use. 4, in does not affect the building use function and does not increase clients' investment principle according to the duration of the requirements and the actual construction, in conjunction with the design, the Party of the first part, supervision, to adopt a flexible and feasible technical measures, and timely solve the construction of the various technical problems. 5, to strengthen the construction of predictability, all construction work than the field ahead of schedule for half a month.
All materials and semi-finished products supply than the actual 3-7 days ahead of schedule, the certificate of various materials and semi-finished site with the required inspection, certification and so on, so as to ensure the timely use of materials to the project. In 6, the implementation of the new technology, new process technology to shorten the interval time, improve construction efficiency, the winter construction measures to implement and ensure continuous construction, to ensure the progress of the project. In 7, for each stage of the construction of the
implementation of dynamic management, put in enough labor. Piecework wages for the team, and will be included in the assessment of piece rate, share price ratio of 15%, so as to improve the construction team consciousness, the consciousness of their own work actively. 8, on-site technical personnel take the initiative to get in touch with the design unit, give advice and suggestions from the angle of construction, the accumulated experience of the use of this project, so as to ensure the project quality and efficient completion. 9, strengthen Technical management efforts, in order to adapt to the needs of construction schedule, uncertainty of technical change, promptly notify the foreman and the class of the construction, temporary changes to immediately formulate corresponding supervision measures, the influence of construction and?Que Shi Nai? To take the initiative to the supervision of Party A, early put forward, try to avoid afterwards. (three) to ensure 1, from machinery equipped with cranes: execute 8 hours of work, at any time to meet the construction needs of special circumstances, execute 10 hours of work. 2, the tower crane: the implementation of 24 hours work system, at any time to meet the construction. 3, the steel processing production line, all kinds of complete equipment of processing steel. (four) to provide guarantee in cross matching construction, decoration and installation engineering. Civil engineering, decoration and water are from first to last, the electrical installation professional cross matching problem, and the engineering workload, short construction period, the slightest mistake very likely, because with no understanding, resulting in unnecessary loss of time. Therefore, one hand arrangements for the installation of professional early reserved embedded with the work, to ensure the smooth construction, therefore, in each of our company Project ministry will prepare next month construction plan and report to send the relevant units, so that we are aware of, if adjusted, will also in the first time notice the relevant unit. (5) from the good cooperation of the sub unit work guaranteed. 1, regular weekly meeting meeting, presided over by the total package units, construction units, supervision units, design units and the package units to participate in, meeting the day sorting into briefing, the unit signed after the issuance of, in order to check the accordingly implement. 2, strict implementation of the system to solve the problem of limited, human factors reduce the duration of the delays,
As far as possible the use of written communication and eliminate the occurrence of wrangling, prevarication phenomenon.
In short, in the process of practice, I have a reasonable use of the professional knowledge, reasonable organization of construction progress, strictly according to the requirements of the construction, for the project to contribute to the successful completion of their own strength.
Intern reporter: Wang Qiang (2008 fall construction and management of the construction and management of professional) guidance teacher: Liu Ping May 2010
1. In order to guarantee the pit surrounding buildings safety and construction of the smooth, people often in the periphery of the foundation pit set waterproof curtain, to stop outside the foundation pit of underground water to the base
Pit inside. Waterproof curtain is usually composed of cement and soil mixing column formation of
solid connection, also known as far water pile. There are underground continuous wall used as waterproof curtain.
2 hole is to clear the bottom of the hole precipitation, if the precipitation is too thick, the water poured into the concrete is caused by the sandwich, broken pile, bad pile on the waste! So filling the hole is very
Necessary In prior to perfusion measured with a rope re measurement of the depth of the hole. When the thickness is more than a certain amount of time, dig slag ladle, or mud pump of slag, if thickness has little to do with the words
With, I wrote the following third kind of water jet hole cleaning.
(1) drill hole to the design process, after the hole diameter, Kong Shen, hole position, vertical degree to check and confirm the hole after passing, should immediately clear hole. Pouring underwater concrete before allowing heavy
Slag thickness should meet the design requirements and specifications.
(2) the hole cleaning should meet the following criteria: hole discharge or out of the mud touch no 2 ~ 3mm particles, mud weight not greater than 1.1, sand rate is less than 2%, the viscosity of 17 ~ 20s., is strictly prohibited
The method of deep hole drilling is used to replace the hole.
(3) after the clearance standards should pay close attention to the installation of steel cage and pouring concrete. In the concrete pouring water before using water or wind jet hole bottom 3~5 minutes, Kong Di
The precipitate changes the float, water or shoot wind pressure 0.05Mp.
3 cement mixing pile and steel sheet pile composite, cement mixing pile and drilling cast-in-place pile composite, is to cement mixing pile water resistance, steel piles or bored pile retaining soil structure, is a
Kind of common support structure.
4 according to the chemical composition of the different, the cementitious materials can be divided into two categories: inorganic and organic. Lime, gypsum, cement and other sites commonly known as the \"gray\" of the building materials are inorganic
The asphalt, natural or synthetic resin belongs to the organic cementing material.
5 workshop is the basic implementation of enterprise production organization. The workshop of
industrial enterprises generally have a moderate scale, bear an independent product or a separate part of the production and processing tasks.
Workshop by the workshop director, set up a number of deputy director to assist the work of the director. In the workshop director, a competent staff, such as statisticians and inspector.
Workshop is mainly used for industrial manufacturing, production, assembly, maintenance, testing and other activities of housing.
6 buildings in the external factors often produce deformation, leading to cracking or even damage. Deformation joint is a construction joint which is set aside for this kind of situation. Deformation joints can be divided into expansion joints,
Settlement seam, three kinds of shock joints.
Expansion joint:
Due to changes in temperature and humidity and other factors, the building component will produce expansion and shrinkage deformation. To this end, usually in the appropriate part of the building to set up a vertical seam, since the foundation of the wall,
Floor, roof and other components are disconnected, the building is separated into several independent Part.
Sedimentation sew: between the upper part of the structure of the as layer difference larger, or use load difference; or because of foundation compressed difference larger, in short a word may make
When the uneven settlement of foundation, the structure is divided into several parts, so that the settlement of each part is more uniform, so as to avoid the additional stress in the structure.
Settlement joint \".
The purpose of the setting of the structure is to separate the large buildings into smaller parts, and to form a relatively independent shock proof unit, so as to avoid the whole building vibration of the building due to the earthquake.
Coordinate and produce damage.
. according to the product material selection of different water stop sheet can be divided into: natural rubber waterstop, chloroprene rubber waterstop, nitrile rubber waterstop, ternary ethylene propylene rubber waterstop, plastics
(PVC) and rubber waterstop strip etc.. According to the different structural forms can be divided into: CB type rubber sealing strip and CP type rubber sealing strip and EB type rubber sealing strip,
EP type rubber sealing strip. According to different installation methods can be divided into: medium buried waterstop, post type sealing strip and detachable sealing belt
The 8 most sealing film of some function (role) is:
Rubber water stop belt is the use of rubber high elasticity and compression deformation characteristics, under various loads generate elastic deformation, so as to effectively fastening and sealing, prevent the building structure
Leakage, water seepage and shock absorbing buffer.
In the architectural design of the larger project in general, due to the inability of continuous casting, or due to the deformation of the foundation, or due to the temperature change caused by concrete expansion and contraction of the reasons,
Leave the construction joints and settlement joints, deformation joints, these joints must be installed in the water to prevent water leakage, ask to bringQuestions.
Rubber water stop belt is mainly used for cast-in-place concrete when in construction joints and deformation joints and concrete structure has become one of the basic engineering such as underground facilities, tunnels and culverts, water supply
Aqueduct, dam, reservoir structures etc..
9 in accordance with the structure of the wall is different, there are load-bearing walls, non load bearing wall. Non load bearing wall including partition wall, filling wall, curtain wall. Where the interior space is separated by its weight from the floor
Or the wall of a beam is called a partition wall; the frame is filled between the columns and the wall is called the frame.
The light wall, which is mainly hanging from the external frame, is called the curtain wall. The frame structure of the wall is to fill the walls, from the wall and the separation of the role, the weight of the beam column. Frame structure
Full frame and half frame, the whole frame is not bearing wall, half frame has bearing wall.
10 switch box should be in accordance with one machine, one gate, one leakage, one box
A machine is an independent electrical equipment such as tower crane, concrete mixer, steel cutting machine etc.
A box is a separate distribution box.
A brake is a clear cut point of the electrical equipment, such as circuit breakers
A leakage is the leakage protection device, but the leakage current can not be greater than 30 Ma, damp places and the leakage current in the container can not be more than 15 Ma
11 a full set of steel bar chart to you.
Knowledge drawing
Said method, stirrup:
The diameter of 10@100/200 (2) said the stirrup is 10, 100 non encrypted encryption area space, area distance of 200, all double hoop.
The diameter of 10@100/200 (4) said the stirrup is 10, 100 non encrypted encryption area space, area distance of 200, all limbs hoop.
The diameter of 8@200 (2) said the stirrup is 8, double hoop spacing is 200.
The diameter of 8@100 (4) /150 (2) said the stirrup is 8, the encryption interval of 100 limbs hoop, non encrypted area spacing 150, double hoop.
Method for simultaneous expression of main ribs and beams in a beam:
The 3 Phi 22, Phi 20 3 3 22 with said upper bar, lower reinforced 3 phi 20.
The 2 Phi 12, Phi 18 3 2 12 said the upper bar, lower reinforced 3 phi 18.
The 4 Phi 25, Phi 25 4 4 25 with said upper bar, lower reinforced 4 phi 25.
The 3 Phi 25, Phi 25 5 3 25 with said upper bar, lower reinforced 5 phi 25.
Two, beam on the top of the reinforcement of the method: (marked on the beam support)
The 2 said the two Phi 20 Phi 20 steel, a long pass arrangement for double hoop.
The 2 22+ (4 Phi Phi 12) said 2 to 4 with a diameter of 22 mm long, with 12 erect steel hoop for six.
The 6 Phi 25 4/2 said 4 reinforced the upper upper row of 2 Phi 25, Phi 25.
The 2 phi 22+ Phi 22 2 said only one row of steel bars, two in the corner, two in the middle, uniform layout.
Three, Liang Yaozhong steel expression method:
The G2 said the structure of reinforced beam with 12 sides, each side of a diameter of 12.
The G4 said the structure of phi 14 reinforced beams on both sides, each side two phi 14.
The N2 said on both sides of the beam diameter of 22 torsion bars, each side of a diameter of 22.
The N4 said on both sides of the beam diameter of 18 torsion bars, each side two phi 18.
Four, the beam of the lower part of the method: (marked in the lower part of the beam)
The 4 Phi 25 said only one row of the main reinforcement, 4 Phi 25 all extended into support.
The 6 said with a diameter of 25 2/4 with two rows of reinforced bars are 2 row, Phi 25, Phi 25 lower rib 4.
6 2-3 Phi 25 (- 2) quarter said two rows of steel, lined reinforcement for phi 2 25 and does not extend into bearing, row band 4 Phi 25, all extended into support.
The 2 Phi 25 + Phi 22 (-3) 3 / 5 with 25 said there are two rows of reinforcement, reinforcement for the 5 row. 2 Phi 25 into bearing, 3 Phi 22, not into the bearings. The lower band 5 with a diameter of 25 mm, usually arranged.
Five, marked examples:
KL7 (3) 300 * 700 Y500 * 250
Phi Phi 25 10@100/200 (2) 2
With the diameter of 18 N4
(-0.100)
4 256 6 25 4/2 Phi Phi Phi Phi 25 4/2 6 25 4/2 4 25
- - - - - - - - - - - - - - - - - - - - - - - - - -
4 Phi 252 Phi 254 Phi 25
300 * 700
The diameter of 10 N4
KL7 (3) 300 x 700 frame beam 7, three span, section width 300, high 700.
Y500 * 250 indicates that the beam is under the armpit, the width is 500, and the height is 250.
N4 said the phi 18 torsional reinforcement beam waist.
Phi Phi 25 10@100/200 (2) 2 said the stirrup and erect steel.
-0.100 indicates the level of the beam epithelium.
N2B12 refers to the two sides of the beam with a total of 12 2 of the torsion of the longitudinal ribs (waist), each with a side.
G2B12 refers to the two sides of the beam with a total of 12 2 of the longitudinal structure of the rib (waist), each side with one.
N is subject to sprain meaning, G is the meaning of structural reinforcement!
Seven
No marked N is the construction of reinforced G, 15D is N, G is LaE
Basic method of reinforcing steel bar calculation
First chapter beam
Section one frame beam
First, the calculation of the first cross bar
1, the upper through the tendons
The upper perforated rebar (rib 1 = length on long) through cross span long + two end bearing anchor value
2, end bearing negative reinforcement
End bearing negative reinforcement length: the first row is the Ln/3 + end bearing anchorage value;
The second row is Ln/4 end support anchor value
3, the lower reinforcement
The reinforcement length = span long + about bearing anchor value
Note: the lower part of the bar, whether or not, the calculation of the results are the same, so we are in the lower part of the beam when the label can not enter the sub row of information.
All of the above three types of steel bars are related to the support of the anchor, so, in the software is how to achieve 03G101-1 in the anchorage of the judge?
Now we come to sum up the above three types of reinforcement of the anchor to determine the problem:
Bearing width is greater than or equal to Lae and 0.5Hc + 5D, Max{Lae, 0.5Hc + straight anchor, 5D}.
Rebar end anchorage bearing value = wide support is less than or equal to Lae or less than or equal to 0.5Hc + 5D, bent anchor, Max{Lae, bearing width - protection layer 15}.
The middle bearing anchor bar = Max{Lae, 0.5Hc5d}
4, waist muscle
Structure: reinforced structural reinforcement length = span length + 2 * 15d
Torsion bar: count?
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