Formwork supporting system of step type concrete foundation

Abstract

The utility model discloses a formwork supporting system of a stepped concrete foundation. The formwork supporting system comprises a formwork supporting system body with the gravity load of an upper-layer formwork being supported and not suspended. The conical height adjusting body bears the gravity load of the upper-layer formwork through the supporting steel pipe B, the situation that the upper-layer formwork is in a suspended state, stress is not stable, and formwork cracking occurs is avoided, and the problem that when the upper-layer formwork is connected with the lower-layer formwork through the transverse back frame, no poured pouring layer is arranged on the lower-layer formwork for supporting is solved. And the upper-layer template is in a suspended state, so that the upper-layer template is stressed unstably, and the template is cracked.

Description

Technical Field

[0001] The utility model relates to a template support system for a stepped concrete foundation and belongs to the technical field of building construction. Background Art

[0002] When constructing a power generation building, in order to increase the load-bearing area, a large foundation pit must be excavated first, and then a stepped concrete foundation must be poured in the foundation pit. When pouring the stepped concrete foundation, a stepped formwork must be built to obtain a pouring environment.

[0003] The existing stepped formwork is shown in China Publication No. CN116219967A. The stepped concrete foundation is poured in layers. The upper formwork of the stepped formwork is connected to the top of the lower formwork through a cross frame, and the bottom of the upper formwork is directly in contact with the poured layer of the lower layer. However, for the stepped concrete foundation poured at the same time, there is no poured layer in the lower layer to support it. The upper formwork of the stepped formwork will be suspended and unstable, resulting in cracks. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a formwork support system for a stepped concrete foundation.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a formwork support system for a stepped concrete foundation, comprising:

[0007] The gravity load of the upper formwork is supported by a formwork support system that is not suspended in the air.

[0008] Includes: a lower layer formwork that is located in a concave foundation pit and presents a gap during installation.

[0009] The upper template is located above the lower template, and the upper template is suspended above the lower template to form a stepped template as a whole; the back of the upper template is tightly mounted with a supporting steel pipe B;

[0010] A conical height-adjusting body is installed at the bottom of the supporting steel pipe B, and a steel bar screw is slidably passed through the inside of the conical height-adjusting body. The bottom of the steel bar screw is fixed, and a nut is screwed on the steel bar screw to support the conical height-adjusting body. The nut is screwed on the steel bar screw to adjust the conical height-adjusting body.

[0011] The supporting steel pipes B are multiple and are distributed at intervals on the back of the upper template.

[0012] The plurality of support steel pipes B are fixedly connected via connecting and adjusting pipes; the support steel pipes B and the connecting and adjusting pipes are fixedly connected via pipe buckles; and both ends of the connecting and adjusting pipes are tightly pressed and contacted with the top edge of the upper template.

[0013] It also includes a site rock layer with a concave foundation pit, and the back of the lower template is pressed against a supporting steel pipe A, and the bottom of the supporting steel pipe A is inserted into the site rock layer.

[0014] The supporting steel pipes A are multiple and are distributed at intervals on the back of the lower template.

[0015] The lower template and the supporting steel pipe A are tightly pressed together by a wooden back corrugated board; the upper template and the supporting steel pipe B are tightly pressed together by a wooden back corrugated board.

[0016] The bottom of the steel bar screw is inserted into the site rock layer supported in the lower template and fixed.

[0017] The beneficial effect of the utility model is that the conical height-adjusting body bears the gravity load of the upper formwork through the supporting steel pipe B, thereby preventing the upper formwork from being suspended and unstable due to force, resulting in mold cracking. It solves the problem that when the upper formwork is connected to the uncast casting layer on the lower formwork through a cross back frame for support, the upper formwork will be suspended and unstable due to force, resulting in mold cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the lower template and the upper template of the utility model in the concave foundation pit;

[0019] Figure 2 It is a structural schematic diagram of the lower template and the upper template of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the utility model of a conical height-adjusting body, a steel bar screw and a nut;

[0021] In the figure: 1- sunken foundation pit; 2- lower formwork; 21- supporting steel pipe A; 3- site rock layer; 4- upper formwork; 41- supporting steel pipe B; 42- connecting adjustment pipe; 5- conical height adjustment body; 51- steel bar screw; 53- nut. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0023] like Figures 1 to 3 shown.

[0024] A formwork support system for a stepped concrete foundation of the present application comprises:

[0025] The lower formwork 2 and the upper formwork 4 are made of wooden boards.

[0026] The lower template 2 is installed in the sunken foundation pit 1 and presents a gap. The back of the lower template 2 is pressed against a supporting steel pipe A21 through a wooden back corrugated board (not shown in the figure), and the bottom of the supporting steel pipe A21 is inserted into the site rock layer 3. The supporting steel pipe A21 is a plurality of spaced distributions on the back of the lower template 2.

[0027] The upper template 4 is located above the lower template 2. The upper template 4 is suspended above the lower template 2 to form a stepped template as a whole. After the stepped template as a whole is solidified, the steel bars are tied inside and the concrete is poured to form a stepped concrete foundation. The back of the upper template 4 is tightly mounted with a supporting steel pipe B41 through a wooden back corrugated board (not shown in the figure). The supporting steel pipes B41 are multiple and distributed at intervals on the back of the upper template 4. The multiple supporting steel pipes B41 are fixedly connected by a connecting and adjusting pipe 42. The supporting steel pipe B41 and the connecting and adjusting pipe 42 are fixedly connected by a pipe buckle. The two ends of the connecting and adjusting pipe 42 are tightly pressed and contacted on the top edge of the upper template 4.

[0028] A conical height-adjusting body 5 is installed at the bottom of the supporting steel pipe B41, and the conical height-adjusting body 5 supports the bottom of the supporting steel pipe B41. A steel bar screw 51 is slidably passed through the inside of the conical height-adjusting body 5. The bottom of the steel bar screw 51 is inserted into the site rock layer 3 supported in the lower formwork 2 and fixed. A nut 53 is screwed on the steel bar screw 51 to support the conical height-adjusting body 5. The nut 53 is screwed on the steel bar screw 51 to adjust the conical height-adjusting body 5. The conical height-adjusting body 5 bears the gravity load of the upper formwork 4 through the supporting steel pipe B41, thereby preventing the upper formwork 4 from being suspended and unstable due to stress, resulting in mold cracking. This solves the problem that when the upper formwork is connected to the uncast casting layer on the lower formwork through a cross back frame for support, the upper formwork will be suspended and unstable due to stress, resulting in mold cracking.

Claims

1. A formwork support system for a stepped concrete foundation, characterized in that: The upper layer formwork (4) is supported by a gravity load and is not suspended in the air; The formwork support system comprises: a lower layer formwork (2) which is located in a recessed foundation pit (1) and presents a gap when installed; It also includes a site rock layer (3) with a concave foundation pit (1), the back of the lower template (2) is pressed against a supporting steel pipe A (21), and the bottom of the supporting steel pipe A (21) is inserted into the site rock layer (3); An upper template (4) is located above the lower template (2), and the upper template (4) is suspended above the lower template (2) to form a stepped template as a whole; a supporting steel pipe B (41) is tightly installed on the back of the upper template (4); A conical height-adjusting body (5) is installed at the bottom of the supporting steel pipe B (41), a steel bar screw (51) is slidably inserted into the conical height-adjusting body (5), the bottom of the steel bar screw (51) is fixed, a nut (53) is screwed on the steel bar screw (51) to support the conical height-adjusting body (5), and the nut (53) is screwed on the steel bar screw (51) to adjust the conical height-adjusting body (5); The bottom of the steel bar screw rod (51) is inserted into the site rock layer (3) supported in the lower template (2) and fixed; the upper template (4) and the supporting steel pipe B (41) are tightly pressed together by a wooden back corrugated board.

2. The formwork support system for a stepped concrete foundation according to claim 1, characterized in that: The supporting steel pipes B (41) are multiple and are distributed at intervals on the back of the upper template (4).

3. The formwork support system for a stepped concrete foundation according to claim 1, characterized in that: The plurality of support steel pipes B (41) are fixedly connected via a connecting and adjusting pipe (42); the support steel pipes B (41) and the connecting and adjusting pipe (42) are fixedly connected via a pipe buckle; and both ends of the connecting and adjusting pipe (42) are tightly pressed and contacted with the top edge of the upper template (4).

4. The formwork support system for a stepped concrete foundation according to claim 1, characterized in that: The supporting steel pipes A (21) are multiple and are distributed at intervals on the back of the lower template (2).

5. The formwork support system for a stepped concrete foundation according to claim 1, characterized in that: The lower template (2) and the supporting steel pipe A (21) are tightly pressed together by a wooden back corrugated board.

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