CN112343091A

CN112343091A - A structure in which the post-casting zone is closed in advance

Info

Publication number: CN112343091A
Application number: CN202011514053.7A
Authority: CN
Inventors: 任栩志; 何永; 张倍精; 严少伟; 杨静
Original assignee: China Construction Fourth Engineering Division Corp Ltd; China Construction Fourth Bureau Third Construction Engineering Co Ltd
Current assignee: China Construction Fourth Engineering Division Corp Ltd; China Construction Fourth Bureau Third Construction Engineering Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-02-09

Abstract

The invention discloses a structure in which a pouring zone is closed in advance after settlement. This method can seal the settlement post-casting zone at the corresponding position in advance in the process of ensuring the garden construction and use; by adding a horizontal support reinforcement method of profile steel, the negative bending moment generated by the dynamic load of the garden construction can be reduced to the floor structure on both sides of the post-casting zone. Influence; the upper part of the post-settling pouring zone is closed with steel plates, and the yield performance of the steel is reasonably used to offset the influence of the main structure settlement load on the basement roof. The maintenance cost of cracking and water seepage increases due to the uneven settlement of the main structure of the post-casting zone of the basement roof. The rational use of self-leveling micro-expanded concrete, pouring the concrete from the pre-reserved concrete pouring steel pipe and then pouring the concrete can not only ensure the post-pouring concrete The strength meets the design requirements, and it can also ensure the compactness of the concrete inside the post-cast belt.

Description

Subside post-cast strip structure sealed in advance

Technical Field

The invention relates to the technical field of building construction, in particular to a structure for closing a post-settlement casting belt in advance.

Background

In recent years, it has been comparatively extensive a marketing means that promotes real estate sales volume to construct basement roof gardens and pipe network in advance as the show area, but in gardens show area work progress, often because the major structure subsides still not stable yet, subsides post-cast strip and can not seal in advance, leads to the gardens show area can not fully demonstrate comprehensively, and the bandwagon effect that produces does not reach the effect that the developer expects, and the mode of handling usually is two kinds generally:

the utility model provides a, the local post-cast strip that directly influences garden construction pours in advance and seals, though garden construction advances to the field in advance, and gardens show area effect reaches anticipated effect, nevertheless major structure subsides and inevitably leads to this position post-cast strip concrete fracture infiltration, and the fracture scope is not limited to post-cast strip position, and the position scope of mending leakage in the future is big, need carry out the concrete leakage many times even and mend, and the antiseep is with high costs, and the corruption influence of a large amount of infiltration of concrete structure to the reinforcing bar is great.

Secondly, lay the steel sheet in post-cast strip position, reserve the waterproofing position after, directly carry out the garden construction after accomplishing the waterproof and protective layer construction of peripheral basement roof, later stage major structure subsides stably the back, excavate again and construct gardens and the pipe network of accomplishing, uncover post-cast strip steel sheet, clear up post-cast strip construction joint back, pour post-cast strip concrete, do water-proofing and protective layer again, will dig out the gardens show area and the pipe network secondary construction of destruction and resume. Although the method avoids water seepage repair of a post-cast strip, the entering excavation of large machinery in the garden display area increases the additional garden site damage and maintenance, earthwork excavation, pipe network and secondary construction cost, and the cost also includes the safe and civilized construction cost in the process.

Therefore, the traditional construction method for closing the post-cast strip in advance cannot meet the modern construction requirements.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a structure for closing a post-settlement casting belt in advance, which can solve the problem that the post-settlement casting belt cannot be closed in time in the traditional garden construction in advance, and also saves a large amount of construction cost for reducing secondary construction of gardens and pipe networks and water seepage repair of a basement roof.

The invention is realized by the following technical scheme:

a structure for closing a settlement post-cast strip in advance comprises I-shaped steel, a post-cast strip concrete beam and post-cast strip concrete; a post-cast strip template supporting system is arranged below the post-cast strip concrete beam; the post-cast strip template support system comprises: the bottom template of the post-cast strip and the bottom template support of the post-cast strip are arranged; the I-shaped steel is pre-buried to the middle of the post-cast strip concrete beam; a post-cast strip concrete slab is arranged above the post-cast strip concrete beam; the post-cast strip concrete is poured into the post-cast strip concrete slab through a steel pipe; a water stop steel plate is arranged in the post-cast strip concrete slab; a steel plate is arranged above the post-cast strip concrete plate; the middle part of the steel plate is connected with the steel pipe; and a waterproof layer is arranged above the steel plate.

Further, the longitudinal spacing of the steel pipes is not more than 4 m.

Furthermore, the steel plate and the steel pipe are in butt welding, and the steel plate and the post-cast strip concrete slab are welded by steel bars.

Further, the I-steel is 18 in size.

Further, the height of the top of the steel pipe is 200mm higher than the elevation of the finished garden surface, and the upper opening of the steel pipe is sealed by an adhesive tape.

Further, the post-cast strip concrete is self-leveling concrete.

The invention has the beneficial effects that:

construction convenience, the installation is simple, and the efficiency of construction is high, adopts high performance self-leveling concrete pouring post-cast strip, guarantees closely knit degree, satisfies standard impervious requirement, reduces the adverse effect that traditional approach closed in advance and subsides post-cast strip and cause, and the construction in gardens show area is accomplished in all-round, also brings very big profit for construction unit marketing development work.

Drawings

FIG. 1 is a schematic plan view of a structure in which a post-settlement casting belt is closed in advance in the present invention.

FIG. 2 is a cross-sectional view of a structure 1-1 of the present invention in which a post-settlement gate is closed in advance.

FIG. 3 is a cross-sectional view of a structure 2-2 of the present invention in which a post-settlement gate is closed in advance.

Shown in the figure: 1-a steel pipe; 2-I-steel; 3-post-pouring the strip concrete beam; 4-post-pouring a bottom template of the strip; 5-supporting a template at the bottom of the post-cast strip; 6-steel plate; 7-waterproof layer; 8-post-cast strip concrete slab; 9-post-cast strip concrete; 10-water stop steel plate.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

The structure for closing the settlement post-cast strip in advance comprises I-shaped steel 2, a post-cast strip concrete beam 3 and post-cast strip concrete 9, wherein the I-shaped steel is arranged on the post-cast strip concrete beam; a post-cast strip template supporting system is arranged below the post-cast strip concrete beam 3; the post-cast strip template support system comprises: a post-cast strip bottom template 4 and a post-cast strip bottom template support 5; the I-shaped steel 2 is pre-embedded to the middle part of the post-cast strip concrete beam 3; a post-cast strip concrete slab 8 is arranged above the post-cast strip concrete beam 3; the post-cast strip concrete 9 is poured into the post-cast strip concrete slab 8 through the steel pipe 1; a water stop steel plate 10 is arranged in the post-cast strip concrete plate 8; a steel plate 6 is arranged above the post-cast strip concrete plate 8; the middle part of the steel plate 6 is connected with the steel pipe 1; and a waterproof layer 7 is arranged above the steel plate 6.

Further, the longitudinal distance between the steel pipes 1 is not more than 4 m.

Further, the steel plate 6 and the steel pipe 1 are in butt welding, and the steel plate 6 and the post-cast strip concrete plate 8 are in steel bar welding.

Further, the I-steel 2 is 18 in type.

Further, the height of the top of the steel pipe 1 is 200mm higher than the elevation of the finished garden surface, and the upper opening is sealed by an adhesive tape.

Further, the post-cast strip concrete 9 is self-leveling concrete.

The method comprises the following specific implementation steps:

A. disconnecting the post-cast strip formwork support systems and arranging the post-cast strip formwork support systems below the post-cast strip concrete beam 3;

B. embedding No. 18I-steel 2 in the middle of the post-cast strip beam, and anchoring two ends of the post-cast strip beam into the concrete beam;

C. manufacturing a 5 mm-thick settled post-cast strip closed steel plate 6 according to the modulus, and reserving a circular hole to be welded and connected with the steel pipe 1;

D. after the beam plate concrete 3 is poured, the waterproof layer 7 is carried out, the waterproof layer 7 and the protective layer are constructed in a large area after construction, and the garden construction unit carries out the construction in advance;

E. after the garden soil covering construction is finished, temporarily removing the post-cast strip bottom template 4 and the post-cast strip bottom template support 5 after the main structure is settled stably, and chiseling construction joints from the bottom to clean up;

F. and pouring post-cast strip concrete 9 from the position of the steel pipe 1, fully vibrating the bottom template by adopting a vibrating rod, and finally cutting off the steel pipe 1 extending out of the soil covering surface.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited to the embodiments, but rather to the embodiments, the present invention is not limited to the embodiments, and any modifications, equivalents, improvements, and the like within the spirit and principle of the present invention are included in the scope of the present invention.

Claims

1. A structure that is closed in advance with a settling post-cast zone, characterized in that: it comprises an I-beam (2), a post-cast zone concrete beam (3), a post-cast zone concrete beam (9); the post-cast zone concrete beam ( 3) A post-casting belt formwork support system is provided below; the post-casting belt formwork support system includes: a post-casting belt bottom formwork (4), a post-casting belt bottom formwork support (5); the I-beam (2) pre- Buried in the middle of the post-cast concrete beam (3); a post-cast concrete slab (8) is arranged above the post-cast concrete beam (3); the post-cast concrete (9) is poured through the steel pipe (1) to the Inside the post-cast concrete slab (8); a water-stop steel plate (10) is arranged in the post-cast concrete slab (8); a steel plate (6) is arranged above the post-cast concrete slab (8); The middle part of the steel plate (6) is connected with the steel pipe (1); a waterproof layer (7) is arranged above the steel plate (6).

2 . The structure in which the cast zone is closed in advance after settlement according to claim 1 , wherein the longitudinal spacing of the steel pipes ( 1 ) is not greater than 4m. 3 .

3. The structure of the settlement post-casting zone closed in advance according to claim 1, characterized in that: the steel sheet (6) and the steel pipe (1) are butt welded, and the steel sheet (6) and the post-casting zone concrete slab ( 8) Welding with steel bars.

4 . The structure in which the pouring zone is closed in advance after settlement according to claim 1 , wherein the type of the I-beam ( 2 ) is No. 18. 5 .

5 . The structure of the pre-settling post-casting belt closure according to claim 1 , wherein the top of the steel pipe ( 1 ) is 200mm higher than the elevation of the finished surface of the garden, and the upper opening is sealed with tape. 6 .

6 . The structure in which the settlement post-casting zone is closed in advance according to claim 1 , wherein the post-cast zone concrete ( 9 ) is self-leveling concrete. 7 .