Single-side formwork structure based on insufficient construction working face of basement side wall

Abstract

The utility model relates to a unilateral formwork structure based on construction working face insufficient basement side wall is adopted. Including the outer formwork between the support stake row and the basement side wall outside and the inner form template of being located in the inside of basement side wall, this outer formwork includes the concrete layer close to the support stake row and the inner lining wall close to the basement side wall, the concrete layer includes the reinforced mesh and the concrete consolidation body of cladding reinforced mesh, the reinforced mesh is connected by the horizontal steel bar and longitudinal steel bar of multiple longitudinal and transverse interlaced, the support stake row includes multiple support stake along the transverse interval arrangement, each horizontal steel bar is across between all support stake, a plurality of expansion bolts are installed on each support stake along the longitudinal interval, every horizontal steel bar is connected with the expansion bolt at the same height of this horizontal steel bar, and every longitudinal steel bar is connected with the basement bottom plate. The utility model can improve the strength of outer formwork to guarantee the quality of pouring basement side wall.

Description

Technical Field

[0001] This utility model relates to a single-sided formwork structure for basement sidewalls with insufficient construction working surface. Background Technology

[0002] Due to the close proximity of the basement sidewall to the supporting structure, the construction work surface is insufficient, making traditional double-sided formwork construction impossible. Chinese Utility Model Patent Specification CN 206233584 U discloses a formwork structure for exterior walls in narrow areas, comprising: an outer concrete formwork installed on the side of the steel pipe support pile facing the exterior wall; an inner formwork opposite to the outer concrete formwork, the inner formwork having a through hole; and a tie structure connecting the steel pipe support pile and the inner formwork, including a first connecting rod inserted into the outer concrete formwork, a second connecting rod passing through the through hole, and a threaded connector. The first connecting rod connects the steel pipe support pile and a first end of the second connecting rod, the second end of the second connecting rod is located outside the inner formwork and has a threaded section, and the threaded connector is screwed into the threaded section. This prior art enables the construction of the basement sidewall to be completed with single-sided formwork, thus solving the problem of insufficient construction work surface preventing double-sided formwork construction.

[0003] However, the strength of the external template support disclosed in this prior art needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to propose a single-sided formwork structure for basement sidewalls with insufficient construction working surface. It includes an outer formwork located between the support pile row and the outer side of the basement sidewall, and an inner formwork located on the inner side of the basement sidewall. The outer formwork includes a concrete layer near the support pile row and an inner lining wall near the basement sidewall. The concrete layer includes a reinforcing mesh and a concrete consolidation body covering the reinforcing mesh. The reinforcing mesh is composed of multiple intersecting transverse and longitudinal reinforcing bars. The support pile row includes multiple support piles arranged at intervals along the transverse direction, with each transverse reinforcing bar spanning between all the support piles. Multiple expansion bolts are installed at intervals along the longitudinal direction on each support pile. Each transverse reinforcing bar is connected to an expansion bolt at the same height as the transverse reinforcing bar. Each longitudinal reinforcing bar is connected to the basement floor slab.

[0005] This invention can improve the strength of the outer formwork to ensure the quality of the poured basement sidewalls. Attached Figure Description

[0006] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0007] Figure 2 It shows Figure 1 A magnified view of part A;

[0008] Figure 3 It shows Figure 2 BB cross-sectional view.

[0009] Icon labels:

[0010] 10 Support pile rows, 101 Support piles; 20 Basement sidewalls; 30 External formwork, 301 Internal lining wall, 302 Steel mesh, 303 Concrete consolidation, 304 Transverse reinforcement, 305 Longitudinal reinforcement; 40 Internal formwork; 50 Expansion bolts; 60 Basement floor slab, 601 Reinforcement for basement floor slab; 70 Water-stop tie rods; 80 Diagonal braces. Detailed Implementation

[0011] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution.

[0012] like Figures 1 to 3 The diagram shows a single-sided formwork structure for the basement sidewall, which is designed for use when the construction working surface is insufficient. It includes an outer formwork 30 located between the support pile row 10 and the outer side of the basement sidewall 20, and an inner formwork 40 located inside the basement sidewall 20. The outer formwork 30 includes a concrete layer near the support pile row 10 and an inner lining wall 301 near the basement sidewall 20. The concrete layer includes a steel mesh 302 and a concrete consolidation body 303 covering the steel mesh 302. The steel mesh 302 is composed of multiple intersecting transverse steel bars 304 and longitudinal steel bars 305. The support pile row 10 includes multiple support piles 101 arranged at intervals along the transverse direction, with each transverse steel bar 304 spanning between all the support piles 101.

[0013] Multiple expansion bolts 50 are installed at intervals along the longitudinal direction (i.e., the height direction of the support pile) on each support pile 101;

[0014] Each transverse reinforcing bar 304 is connected (especially welded) to an expansion bolt 50 at the same height as the transverse reinforcing bar 304;

[0015] Each longitudinal steel bar (305) is connected to the basement floor slab (60).

[0016] This technical solution can improve the strength of the external formwork to ensure the quality of the poured basement sidewalls.

[0017] In this embodiment, connecting the transverse reinforcing bars with expansion bolts can improve the strength of the outer formwork, and connecting the longitudinal reinforcing bars with the basement floor slab can further improve the strength of the outer formwork.

[0018] In this embodiment, the basement floor slab is a reinforced concrete structure. After the reinforcement 601 of the basement floor slab is lapped, a short steel bar segment that protrudes above the surface of the basement floor slab can be reserved for connection with the longitudinal reinforcement of the steel mesh. Then, the concrete of the basement floor slab is poured. After that, when lapping the steel mesh, the longitudinal reinforcement of the steel mesh is welded to the reserved short steel bar segment that protrudes above the surface of the basement floor slab to complete the connection between the longitudinal reinforcement and the basement floor slab.

[0019] The basement floor slab is a reinforced concrete structure. The basement floor slab has short steel bar segments protruding from the surface of the basement floor slab for welding with the longitudinal steel bars of the steel mesh, so as to facilitate the connection between the longitudinal steel bars and the basement floor slab.

[0020] In this embodiment, the construction process of the outer formwork can be seen as follows: first, expansion bolts are installed on the support piles, then the transverse steel bars of the steel mesh are installed and welded to the expansion bolts, then the longitudinal steel bars of the steel mesh are installed and tied or welded to the transverse steel bars, so that the longitudinal steel bars are connected to the basement floor slab, then the inner lining wall is built, and then concrete is poured between the inner lining wall and the support pile row to form a concrete layer.

[0021] A water-stop bolt 70 is provided between the outer template 30 and the inner template 40. One end of the water-stop bolt 70 is welded to the reinforcing mesh 30, and the other end passes through the inner template 40 and is screwed with a nut. In this embodiment, the structure of the water-stop bolt can adopt existing technology.

[0022] A diagonal brace 80 is provided between the inner formwork 40 and the basement floor slab 60 to support the inner formwork 40.

[0023] A layer of mortar (not shown in the figure) is applied to the side of the inner lining wall facing the basement side wall.

Claims

1. A single-sided formwork structure for basement sidewalls with insufficient construction working surface, comprising an outer formwork located between the support pile row and the outer side of the basement sidewall, and an inner formwork located on the inner side of the basement sidewall. The outer formwork includes a concrete layer near the support pile row and an inner lining wall near the basement sidewall. The concrete layer includes a reinforcing mesh and a concrete consolidation body covering the reinforcing mesh. The reinforcing mesh is composed of multiple intersecting transverse and longitudinal reinforcing bars. The support pile row includes multiple support piles arranged at intervals along the transverse direction, with each transverse reinforcing bar spanning between all the support piles. The structure is characterized by: Each support pile is equipped with multiple expansion bolts at intervals along the longitudinal direction; Each transverse reinforcing bar is connected to an expansion bolt at the same height as that transverse reinforcing bar; Each longitudinal steel bar is connected to the basement floor slab.

2. The single-sided formwork structure for basement sidewalls with insufficient construction working surface as described in claim 1, characterized in that: A water-stop screw is installed between the outer formwork and the inner formwork. One end of the water-stop screw is welded to the steel mesh, and the other end passes through the inner formwork and is screwed with a nut.

3. The single-sided formwork structure for basement sidewalls with insufficient construction working surface as described in claim 2, characterized in that: Diagonal bracing is installed between the inner formwork and the basement floor slab to support the inner formwork.

4. The single-sided formwork structure for basement sidewalls with insufficient construction working surface as described in claim 3, characterized in that: A layer of mortar was applied to the side of the inner lining wall facing the basement.

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