CN114961047A - Novel construction method of composite concrete shear wall structure - Google Patents
Novel construction method of composite concrete shear wall structure Download PDFInfo
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- CN114961047A CN114961047A CN202210821090.5A CN202210821090A CN114961047A CN 114961047 A CN114961047 A CN 114961047A CN 202210821090 A CN202210821090 A CN 202210821090A CN 114961047 A CN114961047 A CN 114961047A
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Classifications
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- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0627—Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat
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- E—FIXED CONSTRUCTIONS
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- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
- E04C5/206—Spacers having means to adapt the spacing distance
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
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- E—FIXED CONSTRUCTIONS
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- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
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- E—FIXED CONSTRUCTIONS
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- E—FIXED CONSTRUCTIONS
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The application discloses a brand-new construction method for a composite concrete shear wall structure, and belongs to the technical field of constructional engineering. The construction method of the brand-new composite concrete shear wall structure comprises the following steps: s1: construction preparation; s2: optimizing a scheme; s3: customizing and processing the CL net rack plate and entering the CL net rack plate; s4: installing a special cushion block; s5: binding steel bars; s6: mounting a net rack plate; s7: installing a template; s8: pouring concrete; s9: dismantling a template of the CL composite shear wall and curing concrete; when the CL compound concrete shear wall is used, the curing time is not less than 14d, particularly, a thinner concrete layer on the outdoor side is not cured timely, and dry shrinkage cracks caused by too fast dehydration are easy to generate.
Description
Technical Field
The application belongs to the technical field of constructional engineering, and particularly relates to a brand-new construction method of a composite concrete shear wall structure.
Background
The CL composite concrete shear wall is composed of CL net frame plates (a net frame formed by welding two layers of steel bar welding nets, an EPS heat insulation plate and three-dimensional oblique inserting steel bars in a welding mode), and the CL composite concrete shear wall is a wall body which is formed by pouring concrete on two sides and is stressed and heat-insulated integrally.
The heat-insulating layer in the CL structure system adopts extruded polystyrene boards with the thickness of 80 mm/100 thickness and the combustion performance is grade B2. The shear wall and other bearing walls are V-shaped nodes and are composed of CL net frame plates and shear wall reinforcing steel bars, the two sides of the heat insulation plate are formed by bidirectionally welding steel wires phi 3@50, the middle of the heat insulation plate is provided with phi 3 oblique steel bars, and 100 pieces/m of the heat insulation plate are 2 The outer side steel wire mesh is 20mm away from the heat insulation board, the inner side steel wire mesh is 15mm away from the heat insulation board (close to the shear wall reinforcing steel bars), the outer side self-compacting concrete thickness of the heat insulation board is 50mm, and the inner side self-compacting concrete thickness is equal to the shear wall thickness. The filler wall adopts I-shaped nodes and consists of CL net frame plates, the two sides of the heat insulation plate are formed by two-way welding of steel wires phi 3@50, the middle of the heat insulation plate is provided with phi 3 oblique joint bars, and 100 joints/m 2 And the distance between the steel wire mesh and the heat insulation plate is 20 mm.
Although the EPS heat-insulating layer in the CL net rack plate is fixed through the obliquely inserted steel bars, if the height difference exceeds a certain range during concrete pouring on two sides, the EPS plate can generate lateral displacement under the action of side pressure, and the CL composite concrete shear wall cannot be ensured to reach the design standard.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides a brand-new construction method for the composite concrete shear wall structure, which is characterized in that the problem that the CL composite concrete shear wall can not meet the design standard because the EPS boards can generate lateral displacement under the action of side pressure if the height difference exceeds a certain range during the concrete pouring of the two sides is solved although the EPS heat-insulating layers in the CL net rack boards are fixed through oblique inserted steel bars.
In order to achieve the purpose, the application provides a brand-new construction method of the composite concrete shear wall structure, which comprises the following steps:
s1: construction preparation, namely reserving a CL net rack plate storage or cushion block manufacturing site on a construction site of a CL building system besides meeting normal site preparation;
s2: optimizing a scheme, namely optimizing the CL system scheme before engineering construction, confirming each node and ensuring that the deepened design of the CL system can be standard and reasonable;
s3: the method comprises the following steps of customizing, processing and entering a CL grid plate, wherein the CL grid plate is a non-standard block, and a constructor technician decomposes, codes and extracts the CL grid plate in the CL composite shear wall according to the arrangement condition of the CL composite shear wall in a construction drawing, a detailed node drawing and a related technical specification combined with the construction joint setting condition;
s4: installing a special cushion block, placing the processed and molded plastic cushion block between the steel bar welding net and the heat insulation plate in the production process of the CL net frame plate, binding a common mortar cushion block on the outer side of the cushion block after the CL net frame plate is installed;
s5: binding reinforcing steel bars, reserving vertical additional reinforcing steel bars according to the requirements of a construction drawing, reserving vertical additional reinforcing steel bars for overlapping at the vertical joint of the first-layer CL composite shear wall and the lower-layer wall according to a design drawing and related drawing set requirements in advance, reserving vertical additional reinforcing steel bars for overlapping at the reinforcing steel bar welding net in the outer concrete and the stressed reinforcing steel bar position of the inner concrete, binding the overlapping reinforcing steel bars on the upper part of the CL mesh plate before the installation of the CL mesh plate, and binding the horizontal temporary fixing reinforcing steel bars at the upper end of the CL mesh plate to ensure the position and the interval of the additional reinforcing steel bars;
s6: the installation of the net rack plate and the vertical transportation of the CL net rack plate construction site can be carried out in sequence according to the serial number of the position of the CL net rack plate by adopting a tower crane hoisting mode, when the size of the CL net rack plate is larger than 5m, the CL net rack plate can be hoisted in a single block, when the size is smaller, the CL net rack plate can be hoisted in a centralized mode by adopting a hanging basket, when the wind power exceeds 5 levels, the CL net rack plate is transported by adopting the hanging basket, and when the single block is hoisted, square timbers are additionally arranged or other measures are taken to prevent the deformation of the steel bar welding net;
s7: installing the template, namely laying the hydroelectric pipeline on the net frame plate before installing the template, and erecting the wall wood template after the CL plate net frame is installed in place;
s8: pouring concrete, wherein when the CL composite shear wall is poured with the concrete, the mold-entering temperature of the self-compacting concrete is controlled to be 5-35 ℃;
s9: the template removal and concrete curing of the CL composite shear wall are carried out, the template removal time of the CL composite shear wall is delayed by 24 hours compared with that of a common shear wall, after the template removal of the CL composite shear wall, maintenance measures of plastic film covering or spraying and curing agent painting are adopted immediately, the curing time is not less than 14d, particularly, the curing is not timely, and the shrinkage crack caused by too fast water loss is easily generated due to the fact that a thin concrete layer on the outdoor side is not cured.
In the implementation process, the construction site in the step S1 is preferably set within the working range of the hoisting equipment, the area of the construction site meets the progress requirement of the construction site, the construction site is leveled and tamped or hardened, drainage measures are made, triangular or trapezoidal leaning frames can be set up by scaffold steel pipes according to the number of units in the storage site to prepare for storing CL net frame plates, CL plates with required specification and model are transported to the site according to the site progress and stacked according to specification, and 150m is planned in the coverage range of the tower crane for each building 2 In the CL plate storage area, the CL plate storage rack is erected by adopting scaffold pipes, the angle of the support is 60-75 degrees, if the arrangement of the periphery of a foundation pit is difficult, the storage rack can be erected on a bottom plate or a top plate of a garage firstly, a tower crane and a CL net rack plate hanging basket machine work normally, the CL net rack plate is vertically transported by adopting an on-site tower crane, the hanging basket can be formed by welding scaffold steel pipes and threaded steel bar on-site materials on-site, the longer side of the hanging basket is made into an openable movable door, a CL net rack plate production unit is determined,the main specifications of the CL rack boards are checked and a supply schedule is made together.
In the implementation process, when the CL rack plates in step S3 are completely the same, the same number may be used, and the number of the CL rack plates should be made into a unified method, so as to be able to carry a plurality of information including building number, floor, and location, and the number of the CL rack plates should be written on the order, and should be simultaneously marked on each side of the CL rack plates and the structural plan in the construction drawing, and when the CL rack plate order should indicate the project name and the use location, the number of the CL rack plates, and the CL rack plate is asymmetric left and right, the view direction of the schematic diagram, and the specification of the CL rack plates should be indicated, including the specification of each layer of the steel bar welding net, the distance from the heat-insulating plate, the specification of the heat-insulating plate, and other special conditions, the detailed dimensions of the schematic diagram, including the length, width, height, and the form of each end of the rack plates.
In the implementation process, the CL net rack plate in the step S3 should enter the field in advance according to the construction progress, the CL net rack plate should be strictly prohibited from being shocked and trampled during loading and unloading, the CL net rack plate should be obliquely and vertically placed on two sides of the storage rack according to the principle of being stored outside according to the prior use during storage, measures for rain prevention, moisture prevention, wind prevention and fire prevention should be taken when the storage time is long, after the CL net rack plate enters the construction field, the product qualification certificate and the product quality certification data are checked, the product identification, the shape, the size and the appearance quality are checked, and the mechanical property sampling retest of the CL net rack plate is performed on a qualified basis. CL rack plates of the same type are not more than 3000m 2 And the goods feeding time is not more than 3 months and less than 3000m 2 Also as a check batch.
In the implementation process, the special cushion blocks in the step S4 are divided into plastic cushion blocks and mortar cushion blocks according to different materials, the special cushion blocks are divided into built-in cushion blocks placed in the production process and post-placed cushion blocks placed after the net rack plate is installed according to different placing times of the cushion blocks, the built-in plastic cushion blocks are formed by placing the processed and formed plastic cushion blocks between the steel bar welding net and the heat insulation plate in the production process of the CL net rack plate, the CL net rack plate is installed, then the common mortar cushion blocks are bound on the outer sides of the cushion blocks, the post-placed plastic or mortar cushion blocks are arranged, after the CL net rack plate is installed, the plastic or mortar clamping pieces with special bayonets are placed on the CL net rack plate according to a specified interval, and the special cushion block intervals require that the mortar cushion blocks installed on site should be orderly arranged and uniformly distributed, and the intervals are not more than 500 mm.
In the implementation process, before the steel bars are bound in the step S5, the steel bars are positioned and paid off by using an ink fountain at corresponding positions on the floor, position lines and control lines of the wall body, the edge members and the door and window openings are marked, the steel bars are arranged and reserved according to the position lines and the control lines, and the installation and binding of the edge members, the common shear walls and the common steel bars of the short-leg shear walls are performed according to construction drawings and relevant specification requirements.
In the implementation process, the CL net rack plates in the step S6 are installed in a closed and sequential connection manner one by one, the lighter CL net rack plates can be directly installed in place manually, the CL net rack plates with larger weight can be directly installed in place during vertical hoisting, fine adjustment of the CL net rack plates after being installed in place is realized by padding upper wood on the heat preservation plate, knocking is carried out by a hammer without directly prying or striking the reinforcement net rack, the verticality of the CL net rack plates is measured and corrected after being installed in place, a temporary protective frame is built by steel pipes to ensure the stability of the CL net rack plates, the CL net rack plates are immediately bound and fixed with common reinforcements of a wall body and a hidden column after being installed in place and temporarily fixed, the CL net rack plates are bound and connected with the lap reinforcements reserved at the floor slab, and when the CL net rack plates do not contain the reinforcements of the wall body, the CL net rack plates are connected with the stressed reinforcements of the wall body and the hidden column by U-shaped lacing reinforcements, the connection between CL net rack boards should be carried out by adopting two modes of additional steel bar binding and lapping the same specification welded nets according to construction drawings and related drawing set requirements, in order to ensure the net cross-sectional area of concrete, the lapping of the outside steel bar welded nets adopts the steel bar welded nets and a buckling method, after the CL net rack boards are installed in place, the installation of the additional steel wire nets is started, one steel wire net with the width of 500mm phi 3 is added at the plane joint positions of the two boards, the steel wire nets are additionally arranged at the corners and the door and window openings, the four corners of the window openings are provided with oblique anti-cracking nets, after the CL net rack boards are installed and fixed and connected with steel bars, the laying and fixing of line pipes, box boxes and embedded parts in the wall body can be carried out, in the construction process, when the steel bar welded nets need to be cut along the vertical direction of the wall or other reasons, the steel bar welded nets with the same specification should be lapped and repaired at the cut positions after the pipe laying is finished, the lapping length should satisfy relevant standard requirement, and the ligature point is no less than one fourth of net number, and permanent wall through hole in the CL composite shear wall should place the sleeve pipe of materials such as plastics, cement, steel of outdoor side area stagnant water ring in advance, and under satisfying the service function condition, the sleeve pipe should be raised to the indoor side angle not less than 5.
In the implementation process, the formwork installation in the step S7 is to be performed after the CL board grid is installed in place, wherein the construction process of the formwork installation refers to and the related construction process content, and the difference between the relevant process standard is the sealing measure of the formwork, the greatest difference between the CL structure system and the common shear wall structure is that the CL composite shear wall is to be cast with self-sealing concrete, so that any corner part of the formwork is required not to have a hole or a gap, the concrete measures are as follows, when the wood formwork is in place, mortar is laid on the lower part of the wood formwork or a mortar gap is hooked after the wood formwork is in place, the mortar return on the lower part of the wood formwork is prevented, the measure of pressing the sponge sealing strip is adopted at the splicing seam parts of all the formworks, the CL composite shear wall is to be cast with self-sealing concrete, and other walls and members are cast with common concrete, when two kinds of concrete are adopted for pouring, common concrete is poured firstly, then self-compacting concrete of the CL composite shear wall is poured, the joint part of the common concrete and the self-compacting concrete is arranged at the outer side of an edge component vertical to the CL composite shear wall and is separated by a dense mesh steel wire mesh, because the dense mesh steel wire mesh can not be removed when the outer wall is poured, in order to prevent the wall surface at the later construction joint from being rusted, pre-burying a three-ply board with the thickness of 5mm within the range of the seam width of 100mm, plastering by adopting anti-crack mortar after the template is removed, installing the CL composite insulation board, in order to meet the requirement that the compactness of the heat-insulation plate is better, the lower part of the heat-insulation plate is provided with a diversion trench 50mm away from the ground, a hole is punched in a wall-through bolt hole in the template from the indoor side to the outdoor side, a cleaning opening is arranged at the bottom of the template at the indoor side, after the through-wall bolt is fixed, the fragments of the heat insulation board in the template are cleaned by a dust collector and the cleaning opening is blocked.
In the implementation process, the self-compacting concrete in the step S8 should be poured away from a high-temperature period, when the water evaporation is too fast, measures such as wind shielding and sun shading should be taken on the construction working surface, a special person should be arranged on the concrete pouring site to detect the self-compacting performance of the concrete of each truck, the concrete with slump and expansion meeting relevant requirements and no bleeding or segregation can be poured into a mold, the concrete pouring point of the CL composite shear wall should be arranged at the intersection of the cross-shaped, T-shaped or L-shaped wall body so as to facilitate the uniform flow of the concrete, the maximum horizontal flow distance of the self-compacting concrete should be determined according to the construction position and should not exceed 7m, the self-compacting concrete of the CL composite shear wall should strictly control the particle size of coarse aggregate, the pump truck and the concrete conveying pipeline should be cleaned before pouring, a screen mesh with a mesh size of 15mm should be arranged at the feed inlet of the pump truck during pouring, the pouring effect of the self-compacting concrete mainly depends on the working performance of the concrete, so that the continuity of the pouring of the concrete is kept as a key, if the pump stopping time is too long, the self-compacting performance of the self-compacting concrete is poor, the concrete in a pump pipe must be treated, the concrete pouring is to pour the inner wall concrete firstly, the self-compacting concrete of the outer wall and the self-compacting concrete in the CL composite shear wall are poured after the inner wall concrete is constructed, the height difference of the concrete surfaces at two sides is observed in time and controlled within 400mm during the pouring, a special person is arranged to observe the height of the concrete liquid level of each section during the concrete pouring process, the observation is carried out in a manual inserted rod measuring mode, when the height difference of the concrete liquid level at the section is close to 400mm, the concrete is poured at the point immediately, the pushing type continuous pouring is adopted at the same pouring point, and the air inclusion layer is prevented, when switching among a plurality of pouring points, secondary concrete is poured before the initial setting of the front concrete, the generation of concrete segregation phenomenon is mainly related to the concrete feeding mode, the maximum coarse aggregate particle size and the concrete pouring height, the coarse aggregate in the self-compacting concrete is suspended in slurry, in order to avoid segregation caused by the sinking of the coarse aggregate due to overlarge impact force generated by the falling of the concrete, the pouring height of the self-compacting concrete of the CL composite shear wall is not more than 5m, when the self-compacting concrete cannot meet the specification, a cylinder and a chute are additionally arranged, the top part of the concrete at a thinner side is prevented from being partially blocked due to larger impact force, a funnel or a baffle is preferably arranged at the upper opening of the template, so that the concrete enters the template at a slower speed, when the self-compacting concrete pouring of the CL composite shear wall is carried out, the vibrating rod is strictly forbidden to be inserted into the template for vibrating, and the vibrating can be carried out by vibrating the upper edge of the template of the vibrating rod, The outside point of template shakes or strikes with the skin hammer mode of waiting and assists the vibration, and after the concrete appears blockking up in part, can use the twisted steel to insert and smash.
In the implementation process, the bolt holes are plugged after the CL composite shear wall is demolded in step S9, the plugged bolt holes are filled with the thermal insulation material with the same thickness as the thermal insulation board, then the two ends of the holes are filled with the dry and hard mortar or the fine aggregate concrete, the outer surface of the holes is coated with the polyurethane waterproof coating with the thickness of more than 1.5mm, and the diameter of the waterproof coating is more than or equal to 150 mm.
Compared with the prior art, the method has the following advantages:
when in use, the construction site of the CL building system is provided with a CL rack plate storage or cushion block manufacturing site besides meeting the normal site preparation, before the engineering construction, the CL system scheme is optimized, each node is confirmed, the deepened design of the CL system can be ensured to be standard and reasonable, the CL rack plate is a non-standard block, a constructor technician is required to decompose, number and sample lifting the CL rack plate in the CL composite shear wall according to the arrangement condition, the node detailed diagram and the related technical specification of the CL composite shear wall in a construction drawing and the construction joint reserving condition, the processed and formed plastic cushion block is placed between a steel bar welding net and a heat insulation plate in the production process of the CL rack plate, the CL rack plate is completely installed, then common mortar cushion blocks are bound on the outer sides of the cushion blocks, vertical additional steel bars are reserved according to the construction drawing requirement, and the vertical joint of the first-layer CL composite shear wall and the lower-layer wall body is provided with a vertical additional steel bar, according to design drawings and related drawing requirements in advance, vertical additional reinforcing steel bars for lap joint are reserved at the reinforcing steel bar welding net in the outer concrete and the stressed reinforcing steel bar position of the inner concrete, the vertical joint of the CL composite shear wall at the floor position can be formed, the reinforcing steel bar welding net in the outer concrete can directly extend out of the floor for 400mm to be lapped, the lap joint reinforcing steel bars can also be additionally arranged, the lap joint reinforcing steel bars are bound on the upper part of a CL net frame plate before the CL net frame plate is installed, in order to ensure the position and the space of the additional reinforcing steel bars, horizontal temporary fixing reinforcing steel bars can be bound at the upper end of the CL net frame plate, the vertical transportation of the CL net frame plate construction site can be carried out in sequence by adopting a tower crane according to the serial number of the positions, when the CL net frame plate is larger in size and exceeds 5m, a single block can be hoisted, when the size is smaller, a hanging basket can be used for centralized hoisting, when wind power exceeds 5 levels, the hanging basket is adopted for transportation, when the single block is hoisted, square timbers are additionally arranged or other measures are taken to prevent the deformation of the steel bar welding net, before the templates are installed, the hydroelectric pipelines are laid on the net rack plates, after the CL board net racks are installed in place, the wooden templates of the wall body are erected, when the CL composite shear wall is subjected to concrete pouring, the mold-entering temperature of the self-compacting concrete is preferably controlled to be 5-35 ℃, the mold-removing time of the CL composite shear wall is preferably delayed by 24 hours compared with that of the common shear wall, after the CL composite shear wall template is removed, curing measures of covering or spraying and brushing the curing agent by a plastic film are adopted immediately, the curing time is not less than 14d, particularly, a thinner concrete layer on the outdoor side is not cured in time, drying shrinkage cracks caused by too fast dehydration are easy to generate, according to the construction method, the concrete cushion blocks are arranged on the two sides of the CL grid plate at certain intervals, and the concrete pouring speed of the two sides is controlled, so that the CL composite concrete shear wall can reach the design standard.
Drawings
Fig. 1 is a system block diagram of a brand-new construction method of a composite concrete shear wall structure according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following embodiments.
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the examples, the means used are conventional in the art unless otherwise specified.
Referring to fig. 1, the present application provides a novel construction method of a composite concrete shear wall structure, including the following steps:
s1: preparing construction, reserving a CL net frame plate storage or cushion block manufacturing site at the construction site of the CL building system besides the normal site preparation, wherein the construction site in the step S1 is suitable to be arranged in the working range of hoisting equipment, the area meets the progress requirement of the construction site, the construction site is smooth and tamped or hardened, a drainage measure is made, triangular or trapezoidal leaning frames are erected on the storage site by scaffold steel pipes according to the number of units to prepare for storing the CL net frame plates, the CL plates with required specification and model are transported to the site according to the site progress and are stacked according to specification, and each building is planned to be 150m within the coverage range of a tower crane 2 The CL plate storage area is characterized in that a CL plate storage rack is erected by using scaffold pipes, the angle of a support is 60-75 degrees, if the arrangement of the periphery of a foundation pit is difficult, the storage rack can be erected on a bottom plate or a top plate of a garage firstly, a tower crane and a CL net rack plate hanging basket machine work normally, the CL net rack plate is vertically transported by using an on-site tower crane, the hanging basket can be formed by welding scaffold steel pipes and threaded steel bar on-site materials, the longer side of the hanging basket is made into an openable movable door, a CL net rack plate production unit is determined, the main specification of the CL net rack plate is checked, and a supply progress plan is formulated together;
s2: optimizing a scheme, namely optimizing the CL system scheme before engineering construction, confirming each node and ensuring that the deepened design of the CL system can be standard and reasonable;
s3: the CL net rack plate is a nonstandard block, a constructor technician decomposes, numbers and extracts the CL net rack plate in the CL composite shear wall according to the arrangement condition, the detailed node diagram and the related technical specification of the CL composite shear wall in the construction drawing in combination with the construction joint reservation condition, the CL net rack plate in the CL composite shear wall is completely the same in the step S3, the same number can be adopted, the number of the CL net rack plate is a unified method, a plurality of information including the building number, the floor and the position can be borne, and the number of the CL net rack plate is divided by the number filled in the orderBesides, the CL net rack plate order should be marked on each side of the CL net rack plate and a structural plane diagram in a construction drawing to facilitate number matching installation, the CL net rack plate order should indicate an engineering name and a use position, the number of the CL net rack plate, the view direction of a diagram and the specification of the CL net rack plate when the CL net rack plate is asymmetric left and right, the specification of each layer of steel bar welding net, the distance from the heat insulation plate, the specification of the heat insulation plate and other special conditions and the detailed size of the diagram, the length, the width, the height and the peripheral end form of the net rack plate are included, the CL net rack plate in the step S3 should enter the field in advance according to the construction progress, the CL net rack plate is prevented from being shocked and trodden when being loaded and unloaded, the CL net rack plate should be obliquely placed on two sides of the storage rack according to the principle of being stored outside firstly when being stored for a long time, rain-proof, moisture-proof, wind-proof and fire-proof measures should be taken when the CL net rack plate enters the construction field, the method is characterized in that the product quality certificate and the product quality certificate data are checked, the product identification, the shape, the size and the appearance quality are checked, and the mechanical property of the CL net rack plate is sampled and retested on the basis of qualification. CL rack plates of the same type are not more than 3000m 2 The time of delivery is less than 3 months and less than 3000m 2 Also as a check batch;
s4: installing special cushion blocks, placing the processed and formed plastic cushion blocks between the steel bar welding net and the heat insulation board in the production process of the CL net frame board, after the installation of the CL net frame board is finished, binding common mortar cushion blocks outside the cushion blocks, dividing the special cushion blocks in the step S4 into plastic cushion blocks and mortar cushion blocks according to different materials, dividing the plastic cushion blocks into built-in cushion blocks placed in the production process, post cushion blocks placed after the installation of the net frame board and built-in plastic cushion blocks according to different placement times of the cushion blocks, placing the processed and formed plastic cushion blocks between the steel bar welding net and the heat insulation board in the production process of the CL net frame board, after the installation of the CL net frame board, binding common mortar cushion blocks outside the cushion blocks, post plastic or mortar cushion blocks, after the installation of the CL net frame board, placing plastic or mortar clamping pieces with special bayonets on the net frame board according to the specified spacing between the special cushion blocks, wherein the mortar cushion blocks are required to be orderly arranged on-site, The cushion blocks are uniformly distributed, the distance is not more than 500mm, the cushion blocks are convenient to install, but the compression resistance is poor, the fixing effect on the heat insulation plate is relatively small, and no matter what material or form of special cushion blocks is adopted, the cushion blocks have the characteristics of ensuring the thickness of the protective layer of the steel bar welding net of the CL net rack plate and the distance between the steel bar welding net and the heat insulation plate, along with simplicity, convenience, fastness and reliability in installation;
s5: binding reinforcing steel bars, reserving vertical additional reinforcing steel bars according to construction drawing requirements, reserving vertical additional reinforcing steel bars for overlapping at the vertical joint of the first-layer CL composite shear wall and the lower-layer wall body according to design drawings and related drawing set requirements in advance, reserving vertical additional reinforcing steel bars for overlapping at the reinforcing steel bar welding net in the outer concrete and the stressed reinforcing steel bar position of the inner concrete, binding the reinforcing steel bars at the vertical joint of the CL composite shear wall at the floor position, directly extending the reinforcing steel bar welding net in the outer concrete out of the floor for overlapping by 400mm, and also adding overlapping reinforcing steel bars, wherein the overlapping reinforcing steel bars are bound at the upper part of the CL grid plate before the installation of the CL grid plate, and in order to ensure the position and the interval of the additional reinforcing steel bars, the reinforcing steel bars at the upper part of the CL grid plate can be bound horizontally and temporarily fixed, and the reinforcing steel bars are bound at the step S5 before the binding of the reinforcing steel bars, and are positioned and paid off by using ink hoppers at corresponding positions on the floor to mark position lines and control lines of wall bodies, edge members, doors and windows, arranging reserved steel bars according to the position lines and the control lines, and installing and binding edge members, common shear walls and common steel bars of short-limb shear walls according to construction drawings and related standard requirements;
s6: the installation of the net rack plate, the vertical transportation of the CL net rack plate construction site can be carried out in sequence according to the serial number of the position of the CL net rack plate by adopting a tower crane hoisting mode, when the size of the CL net rack plate is larger than 5m, the CL net rack plate can be hoisted in a single block, when the size is smaller, the CL net rack plate can be hoisted in a centralized mode by adopting hanging baskets, when the wind power exceeds 5 grades, the whole CL net rack plate is transported by adopting the hanging baskets, when the single block is hoisted, square timber is added or other measures are taken to prevent the deformation of a steel bar welding net, the installation of the CL net rack plate in the step S6 is carried out in a mode of closing and connecting in sequence from time to time, the light CL net rack plate can be directly installed in place by adopting a manual mode, the CL rack plate with larger weight can be directly installed in place during the vertical hoisting, the fine adjustment of the CL rack plate after being installed in place is carried out, the upper timber should be cushioned on the heat preservation plate, then is knocked by using a hammer, the net rack can not be directly prized or hit by adopting the CL rack plate after being installed in place, the perpendicularity of the CL net frame plate is measured and corrected, then a temporary protective frame is erected by adopting a steel pipe to ensure the stability of the CL net frame plate, the CL net frame plate is immediately bound and fixed with common steel bars of a wall body and a hidden column after being installed in place and temporarily fixed, the CL net frame plate is bound and connected with overlap steel bars reserved at a floor slab, when the CL net frame plate does not contain the stress steel bars of the wall body, the CL net frame plate is connected with the stress steel bars of the wall body and the hidden column by adopting U-shaped lacing bars, the connection between the CL net frame plates is carried out by adopting two modes of binding additional steel bars and overlapping welding nets with the same specification according to construction drawings and related drawing sets, in order to ensure the net section area of concrete, the overlapping of the outside steel bar welding nets adopts a steel bar welding net and a buckling method, after the CL net frame plate is installed in place, the additional steel wire net is installed, a steel wire net with the width of 500mm phi 3 is added at the position of a plane joint of the two plates, steel wire meshes are additionally arranged at corners and door and window openings, oblique anti-cracking nets are arranged at four corners of the window openings, CL net frame plates are fixedly installed and connected with steel bars, and then inner wire pipes, box boxes and embedded parts of a wall body can be laid and fixed, in the construction process, as thick electric pipes or other pipelines need to run along the vertical direction of the wall or other reasons, when the steel bar welding nets need to be cut, after the pipes are laid, the steel bar welding nets of the same specification are lapped and repaired at the cut parts, the lapping length meets the requirements of relevant specifications, the number of binding points is not less than one fourth of the number of grids, permanent through-wall holes in the CL composite shear wall are required to be placed in advance, sleeves made of plastics, cement, steel and the like with water-stop rings on the outdoor side are required to be placed in advance, and the sleeves are required to be raised to the indoor side by an angle not less than 5 degrees under the condition of meeting the use function;
s7: installing a template, namely, before installing the template, laying a water and electricity pipeline on a net rack plate, namely, erecting a wall wooden template after the CL board net rack is installed in place, and erecting the wall wooden template after the CL board net rack is installed in place in the template installation in the step S7, wherein the construction process of the template installation refers to and the related construction process content, the related process standard is the sealing measure of the template, the biggest difference between the CL structure system and the common shear wall structure is that the CL composite shear wall uses self-sealing concrete to pour the concrete, therefore, any corner part of the template is required not to be provided with holes and gaps so as to prevent the occurrence of a mortar leakage phenomenon, and the concrete measure is as follows, when the wooden template is in place, mortar is laid on the lower part of the wooden template or is hooked with mortar gaps after being in place so as to prevent the mortar return on the lower part of the wooden template, the method is characterized in that measures for pressing sponge sealing strips are adopted at splicing seam parts of all templates, the CL composite shear wall is poured by adopting self-compacting concrete, other walls and components are poured by adopting common concrete, when two types of concrete are adopted for pouring, the common concrete is poured firstly, then the self-compacting concrete of the CL composite shear wall is poured, the joint part of the common concrete and the self-compacting concrete is arranged at the outer side of an edge component vertical to the CL composite shear wall and is separated by adopting a dense mesh steel wire mesh, the dense mesh steel wire mesh cannot be removed when an outer wall is poured, three-ply boards with the thickness of 5mm are pre-embedded within the range of the seam width of 100mm for preventing the wall surface at the later construction seam, anti-cracking mortar is adopted for leveling after the templates are removed, when the CL composite shear wall is installed, the compactness of the heat insulation boards is better, the lower parts of diversion trenches are 50mm away from the ground, bolt holes of the wall penetrating through the templates are punched from the indoor side to the outdoor side, a cleaning opening is reserved at the bottom of the indoor side template, and fragments of the heat insulation board in the template are cleaned by a dust collector and are blocked after the wall-penetrating bolt is fixed;
s8: pouring concrete, wherein when the CL composite shear wall is poured, the mold-entering temperature of the self-compacting concrete is preferably controlled to be 5-35 ℃, the pouring of the self-compacting concrete in the step S8 is to avoid high-temperature time periods, when the water evaporation is too fast, measures such as wind shielding, sun shading and the like are adopted on the construction working surface, a special person is arranged on the concrete pouring site to detect the self-compacting performance of the concrete of each vehicle, the concrete with slump and expansion meeting relevant requirements and no bleeding and segregation can be poured into the mold, the concrete pouring point of the CL composite shear wall is arranged at the intersection part of a cross-shaped, T-shaped or L-shaped wall body so as to facilitate the uniform flowing of the concrete, the maximum horizontal flowing distance of the self-compacting concrete is determined according to the construction part and is not more than 7m, and the coarse aggregate particle size of the self-compacting concrete of the CL composite shear wall is strictly controlled, before pouring, a pump truck and a concrete conveying pipeline are cleaned, a screen mesh with the mesh hole of 15mm is arranged at a feed inlet of the pump truck, the pouring effect of self-compacting concrete is mainly determined by the working performance of the concrete, so that the continuity of the pouring of the concrete is kept as a key, if the pump stopping time is too long, the self-compacting performance of the self-compacting concrete is poor, the concrete in a pump pipe needs to be treated, the concrete is poured with inner wall concrete firstly, the self-compacting concrete of an outer wall is poured after the inner wall concrete is constructed, the self-compacting concrete in a CL composite shear wall, the height difference of concrete surfaces at two sides is observed in time and is controlled within 400mm, a special person is arranged to observe the liquid level height of the concrete at each section during the pouring process of the concrete, the observation is carried out in a manner of manually inserting rods, when the liquid level difference of the concrete at a certain section is close to 400mm, the concrete should be mended at the point immediately, the push type continuous casting should be adopted at the same casting point, the air-entraining layer is prevented, when the secondary concrete is cast before the initial setting of the front concrete when switching among a plurality of casting points, the generation of the concrete segregation phenomenon is mainly related to the concrete feeding mode, the maximum coarse aggregate particle diameter and the concrete dumping height, the coarse aggregate in the self-compacting concrete is suspended in the slurry, in order to avoid the segregation caused by the sinking of the coarse aggregate due to the overlarge impact force generated by the concrete dropping, the self-compacting concrete pouring dumping height of the CL composite shear wall should not be larger than 5m, when the specification cannot be met, a string tube and a chute should be added, the top part of the thin side concrete is blocked due to the larger impact force, a funnel or a baffle plate should be arranged at the upper opening of the template, so that the concrete is cast at a slower speed, when self-compacting concrete of the CL composite shear wall is poured, the vibrating rod is strictly forbidden to be inserted into the template for vibrating, auxiliary vibrating can be carried out by vibrating the upper edge of the template, the outer side of the template or knocking by a skin hammer and the like by the vibrating rod, and when the concrete is partially blocked, the concrete can be inserted and vibrated by the twisted steel;
s9: the method comprises the steps of removing a template of the CL composite shear wall and curing concrete, wherein the time for removing the template of the CL composite shear wall is preferably 24 hours later than that of a common shear wall, after the template of the CL composite shear wall is removed, plastic film covering or spraying and coating curing agent curing measures are immediately adopted, the curing time is not less than 14 days, particularly, a thin concrete layer on the outdoor side is not cured timely, and a dry shrinkage crack caused by too fast water loss is easily generated, in the step S9, bolt holes are blocked after the template of the CL composite shear wall is removed, the blocked bolt holes are filled with heat insulation materials with the same thickness as that of a heat insulation plate, then dry hard mortar or fine stone concrete is used for filling the two ends of the holes, polyurethane waterproof paint with the thickness of more than 1.5mm is coated on the outer surface, and the diameter of the waterproof coating is more than or equal to 150 mm.
Safety measures are as follows:
1. the mechanical operation must be certified by a specially-assigned person for post operation, and the mechanical and temporary electricity utilization safety operating regulations are complied with.
2. All constructors need to use labor protection supplies correctly.
3. The CL net rack plate should be windproof when stored and hoisted, and should be prevented from being hoisted by a single piece when the wind power is more than 5 levels. When the lifting hook is released, the herringbone ladder is adopted, and the CL net rack plate cannot be climbed. The net rack plate is fixed in time after being in place to prevent overturning and hurting people.
4. The CL net rack plates are installed along with the approach, and the quantity of the CL net rack plates stored on site does not exceed the consumption of one layer. The site storage place should be provided with a fireproof warning sign, smoking is strictly prohibited, the site should be far away from a fire source, and the site is completely covered by a non-combustible material.
5. The CL net rack plate is installed after the welding work of the main steel bars is finished, and the steel bars of the CL net rack plate are connected in a binding mode.
6. The CL net rack plate is suitable for installing and supporting the template at the same time, and pouring of concrete is immediately carried out after pouring conditions are met, so that the exposure time of the CL net rack plate is shortened.
7. In the CL net rack plate installation process, the construction operation surface strictly prohibits open fire operation.
8. Fire-fighting facilities such as fine sand, fire extinguishers, water sources and the like are prepared on the CL net rack plate storage site and the construction operation surface.
Specifically, the working principle of the brand-new construction method of the composite concrete shear wall structure is as follows: when in use, the construction site of the CL building system is provided with a CL rack plate storage or cushion block manufacturing site besides meeting the normal site preparation, before the engineering construction, the CL system scheme is optimized, each node is confirmed, the deepened design of the CL system can be ensured to be standard and reasonable, the CL rack plate is a non-standard block, a constructor technician is required to decompose, number and sample lifting the CL rack plate in the CL composite shear wall according to the arrangement condition, the node detailed diagram and the related technical specification of the CL composite shear wall in a construction drawing and the construction joint reserving condition, the processed and formed plastic cushion block is placed between a steel bar welding net and a heat insulation plate in the production process of the CL rack plate, the CL rack plate is completely installed, then common mortar cushion blocks are bound on the outer sides of the cushion blocks, vertical additional steel bars are reserved according to the construction drawing requirement, and the vertical joint of the first-layer CL composite shear wall and the lower-layer wall body is provided with a vertical additional steel bar, according to design drawings and related drawing requirements in advance, vertical additional reinforcing steel bars for lap joint are reserved at the reinforcing steel bar welding net in the outer concrete and the stressed reinforcing steel bar position of the inner concrete, the vertical joint of the CL composite shear wall at the floor position can be formed, the reinforcing steel bar welding net in the outer concrete can directly extend out of the floor for 400mm to be lapped, the lap joint reinforcing steel bars can also be additionally arranged, the lap joint reinforcing steel bars are bound on the upper part of a CL net frame plate before the CL net frame plate is installed, in order to ensure the position and the space of the additional reinforcing steel bars, horizontal temporary fixing reinforcing steel bars can be bound at the upper end of the CL net frame plate, the vertical transportation of the CL net frame plate construction site can be carried out in sequence by adopting a tower crane according to the serial number of the positions, when the CL net frame plate is larger in size and exceeds 5m, a single block can be hoisted, when the size is smaller, a hanging basket can be used for centralized hoisting, when wind power exceeds 5 levels, the hanging basket is adopted for transportation, when the single block is hoisted, square timbers are additionally arranged or other measures are taken to prevent the deformation of the steel bar welding net, before the templates are installed, the hydroelectric pipelines are laid on the net rack plates, after the CL board net racks are installed in place, the wooden templates of the wall body are erected, when the CL composite shear wall is subjected to concrete pouring, the mold-entering temperature of the self-compacting concrete is preferably controlled to be 5-35 ℃, the mold-removing time of the CL composite shear wall is preferably delayed by 24 hours compared with that of the common shear wall, after the CL composite shear wall template is removed, curing measures of covering or spraying and brushing the curing agent by a plastic film are adopted immediately, the curing time is not less than 14d, particularly, a thinner concrete layer on the outdoor side is not cured in time, drying shrinkage cracks caused by too fast dehydration are easy to generate, according to the construction method, the concrete cushion blocks are arranged on the two sides of the CL grid plate at certain intervals, and the concrete pouring speed of the two sides is controlled, so that the CL composite concrete shear wall can reach the design standard.
The above examples are merely illustrative of several embodiments of the present application, which are described in more detail and detail, but are not to be construed as limiting the scope of the claims.
It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A brand new construction method for a composite concrete shear wall structure is characterized by comprising the following steps:
s1: construction preparation, namely reserving a CL net rack plate storage or cushion block manufacturing site on a construction site of a CL building system besides meeting normal site preparation;
s2: optimizing a scheme, namely optimizing the CL system scheme before engineering construction, confirming each node and ensuring that the deepened design of the CL system can be standard and reasonable;
s3: the method comprises the following steps of customizing, processing and entering a CL grid plate, wherein the CL grid plate is a non-standard block, and a constructor technician decomposes, codes and extracts the CL grid plate in the CL composite shear wall according to the arrangement condition of the CL composite shear wall in a construction drawing, a detailed node drawing and a related technical specification combined with the construction joint setting condition;
s4: installing a special cushion block, placing the processed and molded plastic cushion block between the steel bar welding net and the heat insulation plate in the production process of the CL net frame plate, binding a common mortar cushion block on the outer side of the cushion block after the CL net frame plate is installed;
s5: binding steel bars, reserving vertical additional steel bars according to the requirements of a construction drawing, reserving vertical lap joint additional steel bars at the vertical joint of the first-layer CL composite shear wall and the lower-layer wall according to a design drawing and related drawing set requirements in advance, reserving the vertical lap joint additional steel bars at the steel bar welding net position in the outer concrete and the stressed steel bar position of the inner concrete, and binding the lap joint steel bars on the upper part of the CL mesh plate before the CL mesh plate is installed, wherein the steel bar welding net in the outer concrete can directly extend out of the floor slab for lap joint by 400mm, and can also be additionally provided with lap joint steel bars;
s6: the installation of the net rack plate and the vertical transportation of the CL net rack plate construction site can be carried out in sequence according to the serial number of the position of the CL net rack plate by adopting a tower crane hoisting mode, when the size of the CL net rack plate is larger than 5m, the CL net rack plate can be hoisted in a single block, when the size is smaller, the CL net rack plate can be hoisted in a centralized mode by adopting a hanging basket, when the wind power exceeds 5 levels, the CL net rack plate is transported by adopting the hanging basket, and when the single block is hoisted, square timbers are additionally arranged or other measures are taken to prevent the deformation of the steel bar welding net;
s7: installing the template, namely laying the hydroelectric pipeline on the net frame plate before installing the template, and erecting the wall wood template after the CL plate net frame is installed in place;
s8: pouring concrete, wherein when the CL composite shear wall is poured with the concrete, the mold-entering temperature of the self-compacting concrete is controlled to be 5-35 ℃;
s9: the template removal and concrete curing of the CL composite shear wall are carried out, the template removal time of the CL composite shear wall is delayed by 24 hours compared with that of a common shear wall, after the template removal of the CL composite shear wall, maintenance measures of plastic film covering or spraying and curing agent painting are adopted immediately, the curing time is not less than 14d, particularly, the curing is not timely, and the shrinkage crack caused by too fast water loss is easily generated due to the fact that a thin concrete layer on the outdoor side is not cured.
2. The construction method of a brand new composite concrete shear wall structure according to claim 1, wherein the construction site in the step S1 is preferably set within the working range of a hoisting device, the area of the construction site should meet the progress requirement of the construction site, and the construction site should be leveled and advancedTamping or hardening, making drainage measures, erecting triangular or trapezoidal leaning frames on a storage site by scaffold steel pipes according to the number of units to prepare for storing CL net frame plates, transporting CL plates with required specification models to the site according to site progress, stacking the CL plates according to specifications, and planning 150m for each building in the coverage range of the tower crane 2 The CL plate storage area, CL plate storage rack adopts the scaffold pipe to set up, support angle 60-75 degrees, if there is the difficulty in arranging around the foundation ditch, can set up the storage rack on garage bottom plate or roof earlier, the tower crane, CL net rack board hanging flower basket machines work normally, CL net rack board vertical transportation adopts on-the-spot tower crane, the hanging flower basket can be formed by scaffold steel pipe, the on-the-spot welding of twisted steel field material, the hanging flower basket should be made the dodge gate that can open and close with longer one side, confirm CL net rack board production unit, check the main specification of CL net rack board and formulate the supply progress plan jointly.
3. A new construction method of a composite concrete shear wall structure according to claim 1, wherein the CL grid plates in step S3 are identical and can be numbered in the same way, and the numbers of the CL grid plates should be made uniform to bear a plurality of information including building numbers, floors and positions, and the numbers of the CL grid plates should be marked on the structural plan of the CL grid plates and the construction plan in the construction drawing besides the order, and the order of the CL grid plates should indicate the project name and the application location, the numbers of the CL grid plates, and the direction of the view of the schematic diagram, the specifications of the CL grid plates including the specifications of the welded steel mesh of each layer, the distance from the thermal insulation plate, the specifications of the thermal insulation plate and other special conditions, and the detailed dimensions of the schematic diagram including the length, the width, the height, and the position of the grid plates, Height and peripheral end forms.
4. The construction method of a novel composite concrete shear wall structure according to claim 1, wherein the CL net rack boards in the step S3 should advance to the field according to the construction progress, the earthquake and the treading are strictly prohibited during the loading and unloading, and the CL net rack boards should be stored in the original place stored on the outer side before being usedThe CL net rack plate is obliquely and vertically placed on two sides of the storage rack, rain-proof, moisture-proof, wind-proof and fire-proof measures are taken when the storage time is longer, after the CL net rack plate enters a construction site, a product qualification certificate and product quality certification data are checked, product identification, shape, size and appearance quality are checked, and the mechanical property of the CL net rack plate is sampled and retested on the basis of qualification. CL rack plates of the same type are not more than 3000m 2 And the goods feeding time is not more than 3 months and less than 3000m 2 Also as a check batch.
5. The construction method of the brand new composite concrete shear wall structure according to claim 1, it is characterized in that the special cushion blocks in the step S4 are divided into plastic cushion blocks and mortar cushion blocks according to different materials, according to the different placing time of the cushion blocks, the cushion blocks are divided into a built-in cushion block placed in the production process, a post-placed cushion block placed after the net rack plate is installed, and the built-in plastic cushion block is formed by placing the processed plastic cushion block in the CL net rack plate production process, placing between the steel bar welding net and the heat insulation board, binding a common mortar cushion block outside the cushion block after the CL net frame plate is installed, arranging a plastic or mortar cushion block at the rear part, after the CL net rack plate is installed, plastic or mortar clamping pieces with special bayonets are placed on the CL net rack plate according to a specified interval, the special cushion block interval requires that mortar cushion blocks to be installed on site and should be orderly arranged and uniformly distributed, and the interval is not more than 500 mm.
6. The construction method of a novel composite concrete shear wall structure according to claim 1, wherein the steel bars in step S5 are positioned and paid off by ink fountains at corresponding positions on the floor surface before the steel bars are installed and bound, position lines and control lines of wall bodies, edge members, door and window openings are marked, the steel bars are arranged and reserved according to the position lines and the control lines, and the installation and binding of the edge members and common steel bars of common shear walls and short-limb shear walls are performed according to construction drawings and related standard requirements.
7. The construction method of a novel composite concrete shear wall structure according to claim 1, wherein the installation of the CL grid plates in step S6 is performed in a way of closing and connecting sequentially from one to another, lighter CL grid plates can be installed in place directly by manual operation, CL grid plates with larger weight can be directly installed in place during vertical hoisting, fine adjustment of CL grid plates after being installed in place is performed by padding upper wood on the insulation board and then knocking with a hammer without directly prying or striking the steel bar net rack, after the CL grid plates are installed in place, the verticality of the CL grid plates is measured and corrected, then temporary protective frames are built by steel pipes to ensure the stability of the CL grid plates, after the CL grid plates are installed in place and temporarily fixed, the CL grid plates are immediately bound and fixed with the common steel bars of the wall body and the hidden columns, the CL grid plates are bound and connected with the lap steel bars reserved at the floor slab, when the CL net rack plate does not contain the stressed steel bars of the wall body, the CL net rack plate is connected with the stressed steel bars of the wall body and the hidden column by U-shaped lacing wires, the connection between the CL net rack plate is carried out by adopting two modes of additional steel bar binding and overlapping welding nets with the same specification according to construction drawings and related drawing set requirements, in order to ensure the net section area of concrete, the overlapping of the outside steel bar welding nets is carried out by adopting a steel bar welding net and a buckling method, after the CL net rack plate is installed in place, an additional steel wire net with the width of 500mm phi 3 is added at the plane joint position of the two plates, the steel wire nets are added at corners and door and window openings, oblique anti-cracking nets are arranged at four corners of the window openings, after the CL net rack plate is installed and fixed and connected by the steel bars, the laying and fixing of a wire pipe, a box and an embedded part in the wall body can be carried out, in the construction process, as thicker electric pipes or other pipelines need to run along the vertical direction of the wall or other reasons, when the welded steel bar net needs to be cut off, the welded steel bar net with the same specification is lapped and repaired at the cut-off part after the pipe arrangement is finished, the lapping length meets the requirements of relevant specifications, the number of binding points is not less than one fourth of the number of grids, permanent wall through holes in the CL composite shear wall are required to be placed in advance, sleeves made of plastics, cement, steel and the like with water stop rings on the outdoor side are required to be placed, and under the condition that the use function is met, the sleeves are suitable for being lifted to the indoor side by an angle not less than 5 degrees.
8. The construction method of a novel composite concrete shear wall structure according to claim 1, wherein the formwork installation in step S7 is performed by erecting a wooden formwork of the wall body after the CL plate grid is installed in place, wherein the construction process of the formwork installation refers to and the related construction process content, and the related process standard is the sealing measure of the formwork, and the greatest difference between the CL structure system and the ordinary shear wall structure is that the CL composite shear wall is cast by using self-sealing concrete, so that any corner part of the formwork is not required to be provided with holes and gaps, and the concrete measure is as follows, when the wooden formwork is in place, mortar is laid on the lower part of the wooden formwork or mortar gaps are hooked after the wooden formwork is in place, thereby preventing mortar return on the lower part of the wooden formwork, and the measure of pressing a sponge sealing strip is adopted at the joint parts of all the formworks, the CL composite shear wall is cast by adopting self-compacting concrete, other walls and components are cast by adopting common concrete, when two kinds of concrete are cast, the common concrete is cast firstly, then the self-compacting concrete of the CL composite shear wall is cast, the joint part of the common concrete and the self-compacting concrete is arranged at the outer side of an edge component vertical to the CL composite shear wall and is separated by adopting a dense mesh steel wire mesh, the dense mesh steel wire mesh cannot be removed when an outer wall is cast, in order to prevent the wall surface at a construction joint from being rusted, a three-ply board with the thickness of 5mm is pre-embedded within the range of 100mm of the joint width, after a template is removed, anti-crack mortar is adopted for leveling, when the CL composite insulation board is installed, in order to meet the requirement that the compactness of the insulation board is better, a diversion groove is left at the lower part 50mm away from the ground, a bolt hole penetrating the wall on the template is punched from the indoor side to the outdoor side, a cleaning opening is left at the bottom of the template at the indoor side, after the through-wall bolt is fixed, the fragments of the heat insulation board in the template are cleaned by a dust collector and the cleaning opening is blocked.
9. The method as claimed in claim 1, wherein the step S8 of constructing the self-compacting concrete shear wall structure includes steps of avoiding high temperature periods, taking measures such as wind shielding and sun shading on the construction surface when water is evaporated too fast, detecting the self-compacting performance of the concrete of each car by a special person at the concrete casting site, placing the concrete with slump and expansion satisfying the relevant requirements and without bleeding and segregation into the mould for casting, placing the concrete of the CL composite shear wall at the intersection of the cross-shaped, T-shaped or L-shaped walls for uniform flow of the concrete, determining the maximum horizontal flow distance of the self-compacting concrete according to the construction site and not exceeding 7m, strictly controlling the particle size of coarse aggregate in the self-compacting concrete of the CL composite shear wall, and cleaning the pump car and the concrete conveying pipeline before casting, when the self-compacting concrete is poured, a screen mesh with the mesh opening of 15mm is arranged at a feed inlet of a pump truck, the pouring effect of the self-compacting concrete is mainly determined by the working performance of the concrete, so that the continuity of the pouring of the concrete is kept as a key, if the pump stopping time is too long, the self-compacting performance of the self-compacting concrete is poor, the concrete in a pump pipe needs to be treated, the concrete is poured, the inner wall concrete is poured firstly, the outer wall self-compacting concrete is poured after the inner wall concrete is constructed, the self-compacting concrete in a CL composite shear wall, the height difference of the concrete surfaces at two sides needs to be observed in time and controlled within 400mm, a specially-assigned person needs to observe the liquid level of the concrete at each section in the concrete pouring process, the observation is carried out in a manner of measuring a hand-inserted rod, when the height difference of the concrete surface at a certain section is close to 400mm, the concrete is immediately poured at the point, the method is characterized in that the pushing type continuous casting is preferably adopted at the same casting point to prevent an air inclusion layer from occurring, secondary concrete is cast before the initial setting of the front concrete when switching among a plurality of casting points, the generation of concrete segregation phenomenon is mainly related to a concrete feeding mode, the maximum coarse aggregate particle size and the concrete pouring height, coarse aggregates in the self-compacting concrete are suspended in slurry, in order to avoid segregation caused by the sinking of the coarse aggregates due to overlarge impact force generated by the falling of the concrete, the self-compacting concrete pouring height of the CL composite shear wall is not more than 5m, when the specification cannot be met, a cylinder string and a chute are additionally arranged, the top part of the thinner side concrete is not blocked due to larger impact force, a funnel or a baffle plate is preferably arranged at the upper opening of a template to enable the concrete to enter the template at a slower speed, and the self-compacting concrete of the CL composite shear wall is carried out, strictly forbid inserting the vibrating spear into the template and vibrate, the accessible vibrates the template upper edge, template outside point with the vibrating spear and shakes or strikes with the skin hammer mode such as mode and assist the vibration, after concrete appears blockking up in local, can insert and smash with the twisted steel.
10. The construction method of a novel composite concrete shear wall structure according to claim 1, wherein in step S9, after the CL composite shear wall is demolded, the bolt holes are plugged, the plugged bolt holes are filled with thermal insulation material with the same thickness as the thermal insulation board, then the two ends of the holes are filled with dry and hard mortar or fine aggregate concrete, and the outer surface is coated with polyurethane waterproof paint with the thickness of more than 1.5mm, wherein the diameter of the waterproof paint is not less than 150 mm.
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