CN107326940B - basement advanced water stop post-cast strip structure and construction method thereof - Google Patents

basement advanced water stop post-cast strip structure and construction method thereof Download PDF

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Publication number
CN107326940B
CN107326940B CN201710781124.1A CN201710781124A CN107326940B CN 107326940 B CN107326940 B CN 107326940B CN 201710781124 A CN201710781124 A CN 201710781124A CN 107326940 B CN107326940 B CN 107326940B
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post
basement
cast strip
concrete
cast
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CN107326940A (en
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卢士华
梁环跃
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Guangzhou Panyu Polytechnic
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Guangzhou Panyu Polytechnic
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/16Arrangement or construction of joints in foundation structures

Abstract

The invention discloses an advanced water stop post-cast strip structure of basements and a construction method thereof, wherein the advanced water stop post-cast strip structure comprises a left basement main body structure, a right basement main body structure, a post-cast strip area and a cast-in-place concrete trapezoidal groove structure arranged below the post-cast strip, and a waterproof coil layer, a polyurethane waterproof coating layer, a waterproof protective layer and a concrete cushion layer are sequentially arranged below the basement main body structure and the cast-in-place concrete trapezoidal groove structure.

Description

basement advanced water stop post-cast strip structure and construction method thereof
Technical Field
The invention relates to the field of constructional engineering, in particular to an advanced water stop post-cast strip structure of basements and a construction method thereof.
Background
The method has the advantages that the method is improved and opened, particularly, since nearly ten years, the social economy of China is rapidly developed, the construction scale is increasingly large, the structural types tend to be more complex and diversified, particularly, the structures of ultralong and ultradeep basements and the structural forms of the connection between a high-rise main building and a low-rise or multi-rise skirt building are many, and a post-pouring belt structure is required to be arranged.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides advanced water stop post-cast strip structures of basements, and the technical scheme of the advanced water stop post-cast strip structure of the basements is realized as follows:
kind of basement advance stagnant water post-cast strip structure, including controlling basement major structure and middle post-cast strip, basement advance stagnant water post-cast strip structure's the face of meeting the soil still is provided with the trapezoidal groove structure of cast in situ concrete, basement major structure, middle post-cast strip and trapezoidal groove structure's the outside are equipped with waterproofing membrane layer, waterproof coating layer and waterproof layer in proper order.
The nearly soil side atress reinforcing bar of cast in situ concrete trapezoidal groove structure is deep into about in the basement major structure, be equipped with the expansion joint in the middle of the trapezoidal groove structure, the expansion joint is provided with U type reinforcing bar with the near-end of middle post-cast strip, and the expansion joint both sides are provided with outer formula waterstop, and nearly soil side distal end is provided with back of the body and pastes formula waterstop, the expansion joint is inside to be irritated the seam with pitch, oil fiber crops.
Middle post-cast strip both sides middle part is provided with C type stagnant water steel sheet, C type stagnant water steel sheet perpendicular to major structure and post-cast strip setting, the C type stagnant water steel sheet outside is equipped with water inflation sealing rod, and middle post-cast strip both sides still are equipped with dense mesh wire net.
And , when the main body structure is a side wall, high-strength bolts for fixing the plugging structure are reserved on two sides of the main body structure.
The concrete of the middle post-cast strip is shrinkage compensation concrete, the grade of the concrete is higher than that of the basement main body structure, the concrete of the basement main body structure and the trapezoidal groove structure is cast in a combined mode, and the concrete of the post-cast strip is post-cast.
And the inner sides of the basement main body structure and the middle post-cast strip are provided with plugging structures.
, the basement main structure comprises a basement bottom plate and basement side walls, when the basement bottom plate is used, the blocking structure is sealed by a glued cover plate, and when the basement side walls are used, the blocking structure is sealed by a template structure.
The construction method of the advanced water stop post-cast strip structure of the basement bottom plate comprises the following steps:
(1) firstly, a waterproof coil layer, a waterproof coating layer and a waterproof protective layer of the outer layer of the basement bottom plate are manufactured;
(2) manufacturing a mounting trapezoidal groove structure and a basement main body structure, binding and fixing steel bars of a post-pouring belt, supporting by using a split heads, leveling and aligning;
(3) laying externally attached water stops along two sides and the end part of the central line of the expansion joint, forming closed water stops at the expansion joint, filling the expansion joint by adopting an extruded polystyrene board, additionally arranging a U-shaped steel bar for fixing the extruded polystyrene board and the rubber water stop during construction, and effectively positioning the extruded polystyrene board and the rubber water stop;
(4) c-shaped water stop steel plates are welded on two sides of the post-cast strip, the water stop steel plates face the soil-facing surface, water-swelling water stop strips are installed, steel bar frameworks are welded on two sides of the post-cast strip, dense mesh steel wire meshes are wrapped outside the steel bar frameworks, and framework steel bars are bound and fixed with a bottom plate and outer wall steel bars at ;
(5) a bottom plate integrated template is manufactured and installed, and a horizontal water stopping groove is reserved;
(6) pouring concrete with a trapezoidal groove structure, removing the extruded polystyrene board, and pointing with oiled hemp and asphalt;
(7) constructing a plugging structure; firstly, building brick belts at two ends of a bottom plate, and covering the brick belts with a gluing cover plate;
(8) and pouring a post-cast strip to supplement the shrinkage concrete after the settlement is basically stable.
The construction method of the advanced water stop post-cast strip structure of the side wall of the basement comprises the following steps:
(1) manufacturing a mounting trapezoidal groove structure and reinforcing steel bars of the basement side wall including a post-pouring belt, binding and fixing the reinforcing steel bars, supporting the reinforcing steel bars by using split heads, and leveling and aligning the reinforcing steel bars;
(2) laying externally attached water stops along two sides and the end part of the central line of the expansion joint, forming closed water stops at the expansion joint, filling the expansion joint by adopting an extruded polystyrene board, additionally arranging a U-shaped steel bar for fixing the extruded polystyrene board and the rubber water stop during construction, and effectively positioning the extruded polystyrene board and the rubber water stop;
(3) c-shaped water stop steel plates are welded on two sides of the post-cast strip, the water stop steel plates face the soil-facing surface, water-swelling water stop strips are installed, steel bar frameworks are welded on two sides of the post-cast strip, dense mesh steel wire meshes are wrapped outside the steel bar frameworks, and framework steel bars are bound and fixed with a bottom plate and outer wall steel bars at ;
(4) manufacturing and installing a side wall integrated template, integrally constructing an outer wall advanced water stop belt, a basement outer wall template and concrete , arranging diagonal braces and supports at the dense mesh steel wire meshes of the side wall, and reserving high-strength bolts on the side walls on the two sides of a post-cast strip for fixing and blocking the template;
(5) pouring concrete with a trapezoidal groove structure, removing the extruded polystyrene board, and pointing with oiled hemp and asphalt; constructing a waterproof layer of the basement side wall;
(6) constructing a plugging structure; the high-strength bolts reserved on the main body structures at the two sides are directly used for fixing the template to realize sealing;
(7) and pouring a post-cast strip to supplement the shrinkage concrete after the settlement is basically stable.
The advanced water stop post-cast strip structure of the basement has the following beneficial effects:
(1) the rubber waterstops are arranged on the side face and the bottom of the expansion joint of the leading waterstop to form a closed waterstop ring, the two horizontal waterstops are additionally arranged on the top face of the bottom plate to form a structural waterproof layer, the structural waterproof layer and a waterproof layer formed by polyurethane film waterproof and waterproof coiled materials form multilayer waterproof at the position of the prenatal waterstop, the waterproof and anti-permeability effects are improved, and meanwhile, the post-casting zone is provided with a water-stopping steel plate and a water-swelling waterstop strip to improve the waterproof effect of the post-casting zone.
(2) The extruded polystyrene board and the rubber waterstop are reserved for forming the seam before concrete is poured at the expansion joint of the leading waterstop, the seam of the extruded polystyrene board is cleared after pouring, and the seam is filled with waterproof asphalt and oiled hemp, so that the shrinkage and deformation capacity of the post-pouring belt is guaranteed while a good waterproof effect is achieved.
(3) Dense mesh steel wire meshes are arranged on two sides of the post-cast strip, so that the phenomenon of slurry accumulation during vibration and concrete pouring is prevented, and the impression quality of the post-cast strip is guaranteed.
(4) The top surface of the post-cast strip is provided with a blocking structure, so that sundries and sewage are prevented from entering the post-cast strip during placement, and secondary cleaning is avoided.
Drawings
FIG. 1 is a schematic view of a structure of a late poured band of an advanced water stop bottom plate of a basement according to the invention;
fig. 2 is a schematic view of a structure of a post-cast strip of an advanced water stop side wall of a basement.
Reference numerals: 1-middle post-pouring belt, 2-basement main body structure (comprising bottom plate and side wall), 3-cast-in-place concrete trapezoid groove structure, 301-transverse steel bar, 4-waterproof roll material layer, 40-polyurethane waterproof coating layer, 5-waterproof protective layer, 6-concrete cushion layer, 7-expansion joint, 71-U-shaped steel bar, 72-asphalt, oil-hemp crack pouring, 73-two-side externally-pasted water stop belt, 74-end externally-pasted water stop belt, 8-horizontal water stop groove, 8 a-high-strength bolt, 9-C type water stop steel plate, 10-water expansion strip, 11-plugging structure, 111-brick belt, 112-glued cover plate and 12-dense mesh steel wire mesh.
Detailed Description
The invention is further described in detail in connection with the figures and the detailed description.
Example 1
As shown in fig. 1, kinds of basement bottom plate advance stagnant water post-cast strip structures, including about basement bottom plate 2 and middle post-cast strip 1, still include that the post-cast strip below is provided with cast-in-place concrete trapezoid groove structure 3, basement bottom plate 2 is waterproof roll layer 4, waterproof coating layer 40, waterproof protective layer 5 and concrete cushion 6 in proper order with the below of cast-in-place concrete trapezoid groove structure 3.
During concrete implementation, the horizontal reinforcing bar 301 of trapezoidal groove structure 3 of cast in situ concrete is deepened about 2 tops of both sides basement bottom plate, be equipped with expansion joint 7 in the middle of trapezoidal groove structure 3, expansion joint 7 and middle post-cast strip 1 handing-over end are equipped with U shaped steel muscle 71, the inside extruded polystyrene board that stays is equipped with, treat concrete placement back clearance, reuse pitch, the crack is filled to the oil hemp 72, expansion joint 7 both sides are provided with both sides and paste formula waterstop 73 outward, the bottom is provided with tip and pastes formula waterstop 74 outward, the outside links to each other with waterproof roll material layer 4, trapezoidal groove structure 3 both sides still are equipped with two horizontal stagnant water recesses 8.
During specific implementation, the middle of two sides of the middle post-cast strip 1 is provided with the water stop steel plate 9, the water stop steel plate 9 is provided with the water swelling water stop strip 10 below, the vertical side surface is provided with the dense mesh steel wire mesh 12, the inner side of the middle post-cast strip 1 is also provided with the plugging structure 11 which comprises the brick belts 111 at two ends and the middle gluing cover plate 112, and the concrete of the middle post-cast strip 1 is shrinkage compensation concrete and is post-cast concrete.
During specific implementation, cement mortar is adopted at the joint of the plugging structure 11 and the basement bottom plate 2 for plastering and smoothing.
In specific implementation, the trapezoidal groove structure 3 and the concrete of the basement bottom plate 2 are cast integrally.
In specific implementation, the horizontal lengths of the straight line part and the broken line part of the trapezoidal groove structure 3, which are longer than the middle post-cast strip 1, at the two ends are not less than 250 mm.
In specific implementation, the strength grade of post-cast compensation concrete of the middle post-cast strip 1 is higher than the concrete grade grade of the basement bottom plate 2.
The construction method of the advanced water stop post-cast strip structure of the basement bottom plate comprises the following steps:
(1) firstly, a concrete cushion layer 6 on the outer layer of a basement bottom plate is manufactured, and then a waterproof coil layer 4, a waterproof coating layer 40 and a waterproof protective layer 5 are manufactured;
(2) manufacturing a mounting trapezoidal groove structure 3 and a basement main body structure 2, including reinforcing steel bars of a middle post-pouring belt 1, binding and fixing the reinforcing steel bars, supporting the reinforcing steel bars by using split heads, leveling and aligning;
(3) two sides of the central line of the expansion joint 7 are paved with two sides of externally-attached water stops 73 and end parts of externally-attached water stops 74, sealed water stops are formed at the expansion joint 7, the expansion joint 7 is filled with extruded polystyrene boards, U-shaped reinforcing steel bars 71 are additionally arranged for fixing the extruded polystyrene boards and the rubber water stops during construction, and the extruded polystyrene boards and the rubber water stops are effectively positioned;
(4) c-shaped water stop steel plates 9 are welded on two sides of the middle post-cast strip 1, the water stop steel plates 9 face the soil-facing surface, water-swelling water stop strips 10 are installed, steel bar frameworks are welded on two sides of the post-cast strip, dense steel wire meshes 12 are wrapped outside the steel bar frameworks, and framework steel bars are bound and fixed with a bottom plate and outer wall steel bars at ;
(5) a bottom plate integrated template is manufactured and installed, and a horizontal water stopping groove 8 is reserved;
(6) pouring concrete with the trapezoidal groove structure 3, removing the extruded polystyrene board, and pointing with oiled hemp and asphalt 72;
(7) constructing a plugging structure 11; firstly, building brick belts 111 at two ends of a bottom plate, and covering the brick belts with a glued cover plate 112;
(8) and pouring a post-cast strip to supplement the shrinkage concrete after the settlement is basically stable.
Example 2
As shown in fig. 2, kinds of basement side wall advance stagnant water post-cast strip structures, including about basement side wall 2 and middle post-cast strip 1, still include that the post-cast strip below is provided with the trapezoidal groove structure of cast in situ concrete 3, basement side wall 2 is waterproof roll layer 4, waterproof coating layer 5, waterproof layer 6 in proper order with the outside of the trapezoidal groove structure of cast in situ concrete 3.
During the concrete implementation, the horizontal reinforcing bar 301 of trapezoidal groove structure 3 of cast in situ concrete is deepened about 2 inboards of both sides basement side wall, is equipped with expansion joint 7 in the middle of trapezoidal groove structure 3, and expansion joint 7 and the end of handing-over of middle post-cast strip 1 are equipped with U shaped steel muscle 71, and the inside is stayed and is equipped with the extruded polystyrene board, treats that concrete placement back clearance, reuse pitch, oil hemp 72 pouring joint, and expansion joint 7 both sides are equipped with both sides outer paste formula waterstop 73, and the outside end is provided with tip outer paste formula waterstop 74, and the outside links to each other with waterproof coil stock layer 4.
In specific implementation, the middle of two sides of the middle post-cast strip 1 is provided with a water stop steel plate 9, the outer side of the water stop steel plate 9 is provided with a water swelling water stop strip 10, the post-cast strip region 1 is vertically provided with a dense mesh steel wire mesh 12, high-strength bolts 8 are reserved in the basement side walls 2 on two sides of the middle post-cast strip 1 and used for fixing a plugging structure 11, and the plugging structure 11 is a plugging template, so that the middle post-cast strip 1 forms a closed space; the concrete of the middle post-cast strip 1 is post-cast shrinkage compensation concrete.
In specific implementation, the dense mesh steel wire mesh 12 is further provided with diagonal braces and supports.
In specific implementation, the trapezoidal groove structure 3 and the concrete of the basement side wall 2 are cast integrally.
In specific implementation, the horizontal lengths of the straight line part and the broken line part of the trapezoidal groove structure 3, which are longer than the middle post-cast strip 1, at the two ends are not less than 250 mm.
In specific implementation, the strength grade of post-cast compensation concrete of the middle post-cast strip 1 is greater than the concrete grade grade of the basement side wall 2.
The construction method of the advanced water stop post-cast strip structure of the side wall of the basement comprises the following steps:
(1) manufacturing a mounting trapezoidal groove structure 3 and a basement side wall 2, including reinforcing steel bars of a middle post-pouring belt 1, binding and fixing the reinforcing steel bars, supporting the reinforcing steel bars by using split heads, leveling and aligning;
(2) two sides of the central line of the expansion joint 7 are paved with two sides of externally-attached water stops 73 and end parts of externally-attached water stops 74, sealed water stops are formed at the expansion joint 7, the expansion joint 7 is filled with extruded polystyrene boards, U-shaped reinforcing steel bars 71 are additionally arranged for fixing the extruded polystyrene boards and the rubber water stops during construction, and the extruded polystyrene boards and the rubber water stops are effectively positioned;
(3) c-shaped water stop steel plates 9 are welded on two sides of the middle post-cast strip 1, the water stop steel plates 9 face the soil-facing surface, water-swelling water stop strips 10 are installed, steel bar frameworks are welded on two sides of the post-cast strip 1, dense mesh steel wire meshes 12 are wrapped outside the steel bar frameworks, and framework steel bars are bound and fixed with a bottom plate and outer wall steel bars at ;
(4) manufacturing and installing a basement side wall 2 integrated template, constructing an outer wall advanced water stop belt, a basement outer wall 2 template and concrete integrated template, arranging diagonal braces and supports at the dense mesh steel wire mesh 12 of the side wall, and reserving high-strength bolts 8a on the side walls 2 at two sides of a post-cast strip 1 for fixing and blocking the template 11;
(5) pouring concrete with the trapezoidal groove structure 3, removing the extruded polystyrene board, and pointing with oiled hemp and asphalt 72; constructing a waterproof layer of the basement side wall;
(6) constructing a plugging structure 11; the high-strength bolts 8a reserved on the main body structures at the two sides are directly used for fixing the template to realize sealing;
(7) and pouring a post-cast strip to supplement the shrinkage concrete after the settlement is basically stable.
The technical contents and technical features of the present invention have been disclosed above, and those skilled in the art may make substitutions and modifications based on the teachings of the present invention without departing from the spirit of the present invention, therefore, the scope of the present invention is not limited to the disclosure of the embodiments, and includes various substitutions and modifications without departing from the spirit of the present invention.

Claims (1)

  1. The construction method of the advanced water stop post-cast strip structure of the basements comprises a left basement main body structure, a right basement main body structure and a middle post-cast strip, and is characterized in that:
    the soil facing surface of the advanced water stop post-cast strip structure of the basement is also provided with a cast-in-place concrete trapezoidal groove structure, and a waterproof roll layer, a waterproof coating layer and a waterproof protective layer are sequentially arranged on the outer sides of the basement main body structure, the middle post-cast strip and the trapezoidal groove structure;
    the concrete cast-in-place trapezoidal groove structure is characterized in that stressed steel bars on the soil side close to the cast-in-place concrete trapezoidal groove structure penetrate into the main body structures of the left basement and the right basement, an expansion joint is arranged in the middle of the trapezoidal groove structure, U-shaped steel bars are arranged at the near ends of the expansion joint and a middle post-cast strip, externally-attached water stops are arranged on two sides of the expansion joint, a back-attached water stop is arranged at the far end close to the soil side, and the expansion joint is filled with;
    the middle parts of two sides of the middle post-pouring belt are provided with C-shaped water-stopping steel plates, the C-shaped water-stopping steel plates are perpendicular to the main body structure and the post-pouring belt, water-swelling water-stopping strips are arranged on the outer sides of the C-shaped water-stopping steel plates, and dense-mesh steel meshes are further arranged on two sides of the middle post-pouring belt;
    the concrete of the middle post-cast strip is shrinkage compensation concrete, the grade of the concrete is grade higher than that of the basement main body structure, the concrete of the basement main body structure and the trapezoidal groove structure is cast in a combined mode, and the concrete of the post-cast strip is post-cast;
    the inner sides of the basement main body structure and the middle post-cast strip are provided with plugging structures;
    the basement main body structure comprises a basement bottom plate and basement side walls, when the basement bottom plate is adopted, the blocking structure is closed by a gluing cover plate, and when the basement side walls are adopted, the blocking structure is closed by a template structure;
    the construction method of the advanced water stop post-cast strip structure of the basement comprises the following steps:
    (1) firstly, a waterproof coil layer, a waterproof coating layer and a waterproof protective layer of the outer layer of the basement bottom plate are manufactured;
    (2) manufacturing a mounting trapezoidal groove structure and a basement main body structure, binding and fixing steel bars of a post-pouring belt, supporting by using a split heads, leveling and aligning;
    (3) laying external-attached water stops and external-side-end back-attached water stops along two sides of the center line of the expansion joint, forming closed water stops at the expansion joint, filling the expansion joint with an extruded polystyrene board, adding U-shaped steel bars for fixing the extruded polystyrene board and the rubber water stops during construction, and effectively positioning the extruded polystyrene board and the rubber water stops;
    (4) c-shaped water stop steel plates are welded on two sides of the post-cast strip, the water stop steel plates face the soil-facing surface, water-swelling water stop strips are installed, steel bar frameworks are welded on two sides of the post-cast strip, dense mesh steel wire meshes are wrapped outside the steel bar frameworks, and framework steel bars are bound and fixed with a bottom plate and outer wall steel bars at ;
    (5) the bottom plate and the side wall integrated template are manufactured and installed, the leading water stop belt of the outer wall and the outer wall template of the basement are constructed in the same integrated mode, diagonal braces and supports are arranged at the dense mesh steel wire mesh of the side wall, and high-strength bolts are reserved at the two ends of the side wall and used for fixing the plugging template;
    (6) pouring concrete with a trapezoidal groove structure, removing the extruded polystyrene board, and pointing with oiled hemp and asphalt; constructing a waterproof layer of the basement side wall;
    (7) constructing a plugging structure; the side walls are directly sealed by fixing templates with high-strength bolts reserved on main body structures on two sides, brick belts are applied to two ends of the bottom plate, and the brick belts are covered by gluing cover plates;
    (8) and pouring a post-cast strip to supplement the shrinkage concrete after the settlement is basically stable.
CN201710781124.1A 2017-09-01 2017-09-01 basement advanced water stop post-cast strip structure and construction method thereof Active CN107326940B (en)

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CN109403631A (en) * 2018-12-08 2019-03-01 上海宝冶集团有限公司 A kind of ground-connecting-wall connect waterproof construction method with original place flowering structure
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