CN103243848B - The construction technology of cast-in-place concrete floor or superstructure and the spring support member of employing - Google Patents

Abstract

The invention belongs to the field of construction engineering, and specifically relates to a construction process of cast-in-place concrete floor slabs or slabs: supporting the bottom formwork → arranging upper and lower double-layer steel bars → binding the steel bars to form a steel bar mesh → installing support members to support the upper and lower layer bar bars → pouring concrete → vibrating concrete → maintenance → demolishing formwork, the supporting member adopts an elastic supporting member; the invention also provides an elastic supporting member used in the construction process. This process uses elastic support members to support the upper and lower layers of steel mesh. When construction workers walk back and forth on the steel mesh, the upper layer of steel mesh will be compressed downwards and automatically return to its original position, avoiding the bending of the steel bars into dead bends and ensuring the floor ( The quality of the cover) has greatly improved the quality of the building; the structural design of the elastic support members is reasonable, and the upper and lower steel meshes can be effectively supported through the overall structure, ensuring the distance between the upper and lower steel meshes and the upper and lower steel meshes. The thickness of the lower protective layer makes the construction and installation simple and fast, and easy to operate.

Description

Construction technology of cast-in-place concrete slabs or slabs and elastic support members used

technical field

The invention relates to a construction technique of cast-in-situ concrete floor or floor cover and an elastic support member adopted, belonging to the field of construction engineering.

Background technique

In most building structures now, prestressed hollow prefabricated slabs and double-layer two-way steel bars are used to arrange cast-in-place reinforced concrete slabs (covers). In the design position, the formwork is set up, the steel bars are bound, the concrete is poured, and then the floor (cover) is obtained after curing and demolition of the formwork. Before pouring concrete, it is necessary to arrange upper and lower layers of steel mesh on the bottom plate. The lower layer of steel mesh is supported by pads, and the upper layer of steel mesh is supported by horse stools. Cause the horse stool or pad to fall, but usually no one pays attention to it or lifts it up, so that the upper and lower steel mesh cannot be effectively supported, so that the distance between the upper and lower steel mesh and the thickness of the upper and lower protective layers cannot be met. According to the design requirements, when construction workers walk or step on the upper steel mesh, because the horse stool used to support the upper steel mesh is a hard support, the steel bar will be bent into a dead bend, and the steel bar cannot be bent into a dead bend. Returning to the original shape will cause serious changes in the design dimensions of the upper and lower steel mesh spacing of the floor (cover), which will seriously affect the construction quality of the cast-in-place concrete floor (cover).

Contents of the invention

According to the deficiencies in the prior art above, the technical problem to be solved by the present invention is: to provide a method that can ensure the spacing between the upper and lower reinforcement meshes and the thickness of the upper and lower protective layers, prevent dead bending of the upper reinforcement, and ensure that the cast-in-place concrete floor or floor The construction technology of the cover quality; the invention also provides the elastic support member used in the construction technology.

The construction process of the cast-in-place concrete floor or slab according to the present invention comprises the following steps: supporting the bottom formwork → arranging the upper and lower double-layer steel bars → binding the steel bars to form a steel mesh → installing support members supporting the upper and lower layer steel mesh → pouring Concrete→vibrated concrete→maintenance→remove the formwork, and the support members adopt elastic support members.

In this floor (cover) construction process, since the upper and lower layers of steel mesh are supported by elastic support members, when construction workers walk back and forth on the steel mesh, the upper layer of steel mesh will be compressed downward and automatically return to its original position, so it is not necessary to There will be a situation where the upper steel bar is bent into a dead bend, so as to ensure the quality of the cast-in-place concrete floor. Among them, the elastic supporting member has various structural forms, and the following two preferred schemes are adopted in this process:

Option One:

The elastic supporting member includes a support frame body and a compression spring. The support frame body is placed on the bottom formwork. The lower part of the support frame body is provided with a lower steel bar groove, and the steel bars of the lower layer steel mesh are placed in the lower layer steel bar groove. Spring groove, stage clip one is contained in stage clip groove, and the space between stage clip one top and support frame body top is the upper stratum reinforcement groove, and the reinforcing bar of upper strata reinforcement net is placed in the upper stratum reinforcement groove.

By adopting the entire support frame to support the upper and lower layers of steel mesh at the same time, it solves the phenomenon of crooked horse stools or cushion blocks and leaking bars caused by the use of horse stools and cushion blocks to support the upper and lower steel mesh respectively in the original process , so that both the upper and lower layers of steel mesh can be effectively supported, ensuring the distance between the upper and lower steel mesh and the thickness of the upper and lower protective layers; through the compression spring one, the elastic support between the upper and lower layer of steel mesh is realized to prevent The upper steel bars caused by the hard support are bent into dead bends.

Wherein, the upper and lower ends of the compression spring one are provided with guide hooks and are installed on the supporting frame body through the guide hooks. Through the guide hook, on the one hand, it plays a guiding role to ensure the longitudinal movement of the compression spring one in the compression spring groove, and on the other hand, it can prevent the compression spring one from popping up during the reset process.

Option II:

The elastic support member is a support spring, the upper part of the support spring is the second compression spring, the lower part is the extension spring, the second compression spring and the extension spring are integrally processed, the support spring is placed on the bottom formwork, the lower steel mesh is placed on the extension spring, the upper , and the lower two layers of steel mesh are connected by two vertically arranged compression springs. During installation, the support spring is placed on the bottom template, and then the second compression spring is bypassed by the lower steel mesh to facilitate the positioning of the bottom of the second compression spring, and the upper part of the second compression spring is fixed with the upper reinforcement mesh.

Same as Scheme 1, because the extension spring supporting the lower steel mesh and the compression spring 2 between the upper and lower layers of steel mesh are processed in one piece, the distance between the upper and lower steel mesh and the thickness of the upper and lower protective layers can be guaranteed , and realize the elastic support between the upper and lower steel meshes through the compression spring two, preventing the upper steel bars from being bent into dead bends.

The beneficial effect that the present invention has compared with prior art is:

The construction technology of the cast-in-place concrete floor or floor uses elastic supporting members to support the upper and lower layers of steel mesh. When construction workers walk back and forth on the steel mesh, the upper layer of steel mesh will be compressed downward and automatically return to its original position. In this way, it can avoid the bending of steel bars into dead bends, effectively guarantee the quality of cast-in-place concrete slabs or floors, especially greatly improve the quality of buildings; the structural design of elastic support members is reasonable, which is convenient for factory production, and through the overall structure The upper and lower steel meshes can be effectively supported, the distance between the upper and lower steel meshes and the thickness of the upper and lower protective layers are guaranteed, and the construction and installation are simple, fast, easy to operate, and are convenient for large-scale popularization and application.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present invention;

Fig. 2 is a schematic structural view of an elastic support member in Embodiment 1;

Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention.

In the figure: 1. Upper steel mesh; 2. Compression spring one; 3. Support frame body; 4. Lower steel mesh; 5. Bottom template; 6. Upper steel groove; 7. Compression spring groove; 8. Lower steel groove; 9, guide hook; 10, stage clip two; 11, extension spring.

Detailed ways

Embodiments of the present invention are further described below in conjunction with accompanying drawings:

The construction process of the cast-in-place concrete floor or floor cover includes the following steps: supporting the bottom formwork → arranging the upper and lower double-layer steel bars → binding the steel bars to form a steel bar mesh → installing supporting members supporting the upper and lower layer steel bar bars → pouring concrete → vibrating and tamping Concrete→maintenance→removal of the formwork, and the support members adopt elastic support members.

In this floor (cover) construction process, since the upper and lower layers of steel mesh are supported by elastic support members, when construction workers walk back and forth on the steel mesh, the upper layer of steel mesh 1 will be compressed downward and automatically return to its original position, so There will be no bending of the upper steel bar into a dead bend, thereby ensuring the quality of the cast-in-place concrete floor. Among them, the elastic supporting member has various structural forms, and the following two preferred schemes are adopted in this process:

Embodiment one:

The elastic supporting member includes a support frame body 3 and a compression spring 2. The support frame body 3 is placed on the bottom formwork 5, and the lower part of the support frame body 3 is provided with a lower reinforcement groove 8, and the steel bars of the lower reinforcement mesh 4 are placed in the lower reinforcement groove 8. , the top of the support frame body 3 is provided with a compression spring groove 7, and the compression spring one 2 is contained in the compression spring groove 7, and the space between the compression spring one 2 top and the support frame body 3 top is the upper layer of reinforcement groove 6, and the upper layer of reinforcement mesh 1 The steel bar placed in the upper layer of steel groove 6, the upper and lower ends of stage clip 2 are all provided with guide hook 9 and are installed on the support frame body 3 by guide hook 9, as shown in Figures 1 and 2.

Embodiment two:

The elastic support member is a support spring, the upper part of the support spring is a compression spring 10, the lower part is a tension spring 11, the compression spring 10 and the tension spring 11 are integrally processed, the support spring is placed on the bottom template 5, and the lower reinforcement mesh 4 is placed On the extension spring 11, the upper and lower layers of steel mesh are connected by two vertically arranged stage clips 10. During installation, the support spring is placed on the bottom template 5, then the second stage of the stage steel mesh 4 is bypassed by the stage clip 10 to facilitate the positioning of the bottom of the stage stage two 10, and the top part of the stage clip two 10 is fixed with the upper floor of the reinforcement mesh 1, as shown in Figure 3 Show.

By adopting the support spring or the entire support frame body 3 which is integrally processed by the extension spring 11 and the compression spring 10 to support the upper and lower layers of steel mesh, it solves the problem of using a horse stool and a pad to support the upper layer in the original process. , The stools or pads tilted and the reinforcement leakage caused by the lower steel mesh enable the upper and lower steel mesh to be effectively supported, ensuring the distance between the upper and lower steel mesh and the thickness of the upper and lower protective layers. It can realize the elastic support between the upper and lower layers of steel mesh, and prevent the upper layer of steel bars from being bent into a dead bend due to hard support.

Claims (4)

1. the construction technology of a cast-in-place concrete floor or superstructure, to comprise the steps: that a bottom template → arrange upper and lower double steel bar → assembling reinforcement forms steel mesh reinforcement → installations and supports the supporting member → concreting of upper and lower layer steel mesh reinforcement → shock concrete → maintenance → form removal, it is characterized in that: supporting member employing spring support member;

Described spring support member comprises supporting frame (3) and stage clip one (2), supporting frame (3) is placed on bottom template (5), the bottom of supporting frame (3) arranges lower floor's steel bar groove (8), the reinforcing bar of lower floor's steel mesh reinforcement (4) is placed in lower floor's steel bar groove (8), the top of supporting frame (3) arranges pressure spring slot (7), stage clip one (2) is contained in pressure spring slot (7), space between stage clip one (2) top and supporting frame (3) top is top reinforcement groove (6), the reinforcing bar of top mat (1) is placed in top reinforcement groove (6).

2. the construction technology of cast-in-place concrete floor according to claim 1 or superstructure, is characterized in that: the upper/lower terminal of described stage clip one (2) is all arranged leads hook (9) and is arranged on supporting frame (3) by leading hook (9).

3. the spring support member adopted in the construction technology of a cast-in-place concrete floor according to claim 1 or superstructure, it is characterized in that: comprise supporting frame (3) and stage clip one (2), supporting frame (3) is placed on bottom template (5), the bottom of supporting frame (3) arranges lower floor's steel bar groove (8), the reinforcing bar of lower floor's steel mesh reinforcement (4) is placed in lower floor's steel bar groove (8), the top of supporting frame (3) arranges pressure spring slot (7), stage clip one (2) is contained in pressure spring slot (7), space between stage clip one (2) top and supporting frame (3) top is top reinforcement groove (6), the reinforcing bar of top mat (1) is placed in top reinforcement groove (6).

4. the spring support member adopted in the construction technology of cast-in-place concrete floor according to claim 3 or superstructure, is characterized in that: the upper/lower terminal of described stage clip one (2) is all arranged leads hook (9) and is arranged on supporting frame (3) by leading hook (9).