The construction industry is one of the important economic growth industries in China. It is not only an important support for the stable development of China's economy, but also a powerful driving force for our residents to improve their living standards and quality of life.With the development of economy and the acceleration of urbanization, the construction industry has obtained the opportunity of rapid development, and the construction scale has been expanding.
Discussion on construction technology of formwork engineering in construction engineering - Figure 1
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Before the construction of the formwork support system, according to the section size of the component, 15 plywood and wood brace are used to make the shaped formwork. Each wall formwork is marked with a number according to the column position, and stacked in order by classification and partition.In order to prevent formwork expansion due to self weight mechanical vibration of concrete during concrete pouring and tamping, wood brace shall be used for side length less than 600 and reinforced and supported at the spacing of 200-250. For side length greater than 600, ф 12 shall be used to fix the drawing rod and @ 600 in both directions.Fix the four corners of the front column with a plumb bob to control its perpendicularity error within 5mm, and verify the section size.Then fix it firmly with clips, wooden beams and short steel pipes.
Technical quality and safety work records: (technical quality and safety activities, inspection, assessment and acceptance, technical quality and safety problems, etc.)
This data is a complete set of technical data forms for construction engineering;The contents include: project overview table, main construction machinery list, main revolving materials list, construction organization design approval table, formwork system list, construction preparation work schedule, etc;The content is detailed and can be used for reference.
1. Site quality management system 2. Quality responsibility system 3. Operation certificate of main professional types of work 4. Subcontractor qualification and management system of subcontractor
This data is the technical disclosure of winter construction of building engineering construction, a total of 11 pages, detailed and accurate, for reference.
The project includes generic cabling system, security protection system, perimeter protection system, access control system, electronic patrol system, machine room engineering system, etc.The generic cabling system adopts a star topology structure. The internal network level subsystem uses Category 6 twisted pair, and the external network level subsystem uses indoor two core optical cables to support the transmission of voice, data, image, multimedia services and other information.At the same time, reasonable system layout and pipeline design shall be carried out according to the business nature, use function, environmental safety conditions and other use requirements of the building.The system is divided into the following subsystems: work area subsystem, wiring subsystem, trunk subsystem, equipment room and management room.
The economic development has improved people's living standards, followed by the demand for housing. Therefore, the current construction industry in China can be described as in full swing. It is not difficult to see the existence of various construction projects in cities, while other water conservancy projects are also accelerating construction.
Paste carbon fiber cloth: base surface treatment and repair: 1) Use grinding wheel to remove and polish the laitance and weathered layer on the concrete surface. After the surface treatment is completed, blow the concrete surface clean to the extent that it is dust-free and dry.2) The dislocation and protruding part of the base surface shall be polished and treated to avoid the carbon fiber cloth forming dead bending and causing damage.3) If there are cracks in the reinforced part, it is necessary to inject two-component polymer resin materials to repair the cracks.4) First, use a wire brush to remove the loose scum on the surface, and then use compressed air to remove the dust;48 pages in total, prepared in 2011.
This document is the technical disclosure of climbing frame construction of construction engineering. The document includes: 1 Set up an operating platform, and the operating platform will return 1300mm from the second floor. Assemble the scaffold on the operating platform.Operation platform 2 is required to place the lifting base at the lifting point.When installing the base, first check whether the structural dimensions at the wall attachment points are consistent with the climbing frame layout plan.3 When placing the base, put the end of the brake rail facing the building, and do not put it upside down;The distance from the base to the wall should be measured directly from the wall to avoid errors.
This document is the technical disclosure for construction in rainy season of construction projects. The document includes: to prevent the blocks (bricks) from being too wet or soaked by rain, the blocks (bricks) should be covered with plastic cloth when it rains, and the blocks (bricks) with more water content should be used after being properly dried.If the mortar flows along the wall during masonry, which indicates that the water content of the block (brick) is saturated, dry bricks and wet bricks shall be used for masonry, or mortar with less consistency shall be used.
This document is the technical disclosure of the winter construction of the building project. The document includes: the winter construction of this year includes the structural construction of the first to eleventh floors of the basement, steel column hoisting, welding, north area structure (including the foundation slab), the backfilling of the basement core, the waterproofing of the exterior wall of the basement structure, and the backfilling of the fertilizer tank outside the structure.
This data is the technical disclosure of safety construction of construction engineering, and the documents include: this set of safety disclosure includes: measurement construction safety, formwork construction safety, reinforcement construction safety, waterproof construction safety, curtain wall construction safety, concrete construction safety, plastering construction safety, high-altitude operation safety, roof construction safety, earthwork construction safety, construction power safety48 safety disclosure documents, including the safety of construction machinery.
The maximum erection height of the basement formwork support system of the project is 5.9m (6.9m in some parts), which belongs to the construction of high formwork erection project, and the scheme category belongs to the construction scheme with greater risk.
This document is a complete set of construction technical disclosure of building engineering, including: construction technical disclosure records of partition slab crack treatment measures, concrete construction technical disclosure, plastering engineering construction technical disclosure, etc., with accurate design and detailed content, which is worth downloading.
A project is composed of 16 individual buildings, including sedimentation tank, filter tank, waste water tank, clean water tank and other large water tank structures, all of which use sand cushion to replace the foundation, and the foundation is a large raft foundation.The foundation elevation of the sand cushion is - 5m, the foundation elevation of the large raft foundation is -0.3m, and the thickness of the sand cushion is 4.7m. The Spanish Deliman Company is responsible for the design of all installation systems and the supply of equipment for this project.
Abstract: In combination with the practical problems encountered by the author in the construction of a cultural square, this paper introduces the construction techniques such as adopting a comprehensive precipitation system, a slope protection system combining long and short slope protection piles and pre-stressed soil nails, setting an extra long concrete post pouring belt, supporting formwork on one side of the external wall, and optimizing the concrete pouring scheme, which achieve excellent structural engineering quality and remarkable economic benefits
It is an engineering capital construction unit that is approved to carry out construction according to an overall design, implements unified accounting economically, has an independent organizational form administratively, and implements unified management.It consists of one or several projects with internal links.
The District 2012 Public Rental Housing Construction Project (Phase I) is located in Guojiaao Village, Qingyun Street, XX District;The total building area is 119245.75m2, the aboveground building area is 91874.38m2, the underground building area is 27371.37m2, and the total number of households is 1749.Including underground garage, 1 # residence, 2 # residence, 3 # residence, 4 # residence (28+3 floors), 5 # residence, 6 # residence, commercial podium and other unit works.
This document is a complete technical disclosure of construction engineering, in word format, 213 pages in total.Description of the technical disclosure card 1. This technical disclosure card is prepared according to (Instructions for filling in the inspection lot inspection table in the Code for Acceptance of Construction Quality of Building Engineering).2. In use, make some appropriate adjustments or add targeted disclosure contents according to the construction environment and conditions to ensure the technical feasibility in construction.
Concrete raw materials;This project uses ordinary silicon 32.5 grade cement, medium sand, crushed stone and drinking water.The cement shall be delivered to the site with the manufacturer's factory certificate, and shall be re inspected according to the batch number. The sand and stone aggregates shall be sampled on site and sent for inspection. The raw materials can only be used after passing the inspection.
1、 Construction preparation(1) Operating conditions1. The+0.5m horizontal control line of the wall body shall be completed, the position of the brick wall shall be checked to see if it meets the requirements, and the pre inspection procedures shall be handled.2. The structural column reinforcement is bound and the concealed inspection procedures are completed.3. Check whether the interior of the structural column is cleaned, including the brick wall tongue ash, the mortar hanging on the reinforcement and the floor ash at the root of the column.
This paper introduces the general situation of a bridge project in Yangquan City, and emphatically expounds the construction technology, formwork design and installation of the bridge formwork project, that is, the construction technical scheme of using ordinary steel formwork, stereotyped steel formwork and bamboo plywood formwork.
1) Before unloading, mark the unloading amount each time on the rack unloading equipment.2) When the full arch frame is unloaded, it can be unloaded from the arch crown to the arch foot in turn;The arched arch frame can be uniformly unloaded at two supports at the same time.3) Simple supported beam and continuous beam should be unloaded from the midspan to the support in turn;The cantilever beam shall be unloaded first from the hanging beam and cantilever support, and then from the support in the non hinged span.4) When the multi hole arch bridge is unloaded, if the pier is allowed to bear the construction load of a single hole, it can be unloaded from a single hole; otherwise, the multi holes should be unloaded at the same time, or each continuous hole should be unloaded in stages.5) When the arch frame is unloaded, special personnel shall be assigned to observe the deflection of the arch ring and the changes of the pier and abutment with instruments, and make detailed records.A special person shall be assigned to observe whether there are cracks.
The concrete pouring thickness of the top plate of the pipe body section is 1.3m, and the load is large. The support system of the formwork needs special design.
The basement floor structure elevation of the project is -5.450, and the top plate structure elevation is -1.25m in the square area and -0.850m in the main building area. The basement floor height: 4.60m in the lower part of the main building and 4.20m in the square area. The concrete component dimensions are as follows: column section dimensions are 600 × 600, 600 × 800, 600 × 900, 800 × 800, 400 × 600, etc;The wall is 300 and 350 thick.The sectional dimensions of main beams are 500 × 1000, 400 × 1000, 400 × 1300, 500 × 800, 500 × 1000, 300 × 700, 300 × 800, 300 × 900, etc;The top slab of basement is 250 and 300 mm thick; the upper structure slab is 100 and 110 mm thick.
The construction quality and scientific management of water supply and drainage in construction projects are necessary to ensure the efficient and safe operation of the pipe network system, and can also improve and make up for some deficiencies in the design and construction.In order to meet the technical requirements of water supply and drainage engineering construction and improve the construction quality, construction personnel need to keep learning and improve their own technical quality to ensure the safety, quality, stability and flexibility of construction and meet the development needs of civil building water supply and drainage.
The bidding documents include the following contents: Chapter I Instructions to Bidders and Pre attached Table of Instructions to Bidders Chapter II Contract Chapter III Pricing Specifications and Technical Specifications Chapter IV Bill of Quantities Chapter V Drawings and Technical Data Chapter VI Bid Document Format
The project is a reconstruction project of 3 # and 4 # tower residential buildings in Dongyi District, which is designed by a design institute in Beijing and supervised by a project construction supervision company in Beijing.It is located in a certain area, adjacent to the workers' club in a certain area to the north. The east-west distance between buildings 3 # and 4 # is 41.56m, and the plane shape of the two floors is similar to "square".
The specification and quality of materials used for arch support shall meet the requirements.During the fabrication of truss arch, each member shall be made of wood with strong material, no damage and low humidity.During the fabrication of the wood clip arch frame, the length of the wood plate shall be matched well, the longitudinal joints shall be staggered, and the spacing and joints of each section shall meet the use requirements.The panel clamp shall be fixed with bolts at intervals, and the rest shall be fixed with iron nails and arch ribs.
The return height of the foundation guide wall and the installation of the external wall waterstop are shown in the following figure. On the basis of ensuring the full flatness of the floor concrete, snap the side line and control line of the column wall. Paste a 20mm wide double-sided adhesive tape at 5mm outside the column wall or block the joint with cement mortar to ensure that the lower joint is tight and prevent mortar leakage during concrete pouring.
Based on the brief introduction of the characteristics and regulations of winter construction, this paper expounds the preparations for winter construction in detailKey points of winter construction technology for construction and masonry works, concrete works, reinforcement works, concrete works, steel structure worksEnsure the smooth progress of winter construction
Key words: architecture;Pile foundation;Abstract of construction technology paper: In the modern construction of building engineering, the adoption of pile foundation not only saves the construction period, but also ensures the project quality, and has achieved corresponding economic and social benefits