Casting formwork structure of balance weight type rubble concrete embankment retaining wall

Abstract

The utility model discloses a pouring formwork structure of a balance weight type rubble concrete embankment retaining wall. The pouring formwork structure solves the problem of how to achieve rapid, safe and stable construction of the embankment retaining wall on site. A retaining wall first pouring section space (6) is arranged between the first pouring section inner side steel formwork (8) and the first pouring section outer side steel formwork (9), and short pre-buried cable-stayed steel bars (10) and long pre-buried cable-stayed steel bars (11) are arranged on the retaining wall concrete foundation layer (3) below the retaining wall first pouring section space (6). A pair of first-section lower horizontal steel pipes (13) are arranged on a first pouring section inner side steel formwork (8) on the outer side of a lower formwork hole, and the upper end of a short pre-buried cable-stayed steel bar (10) sequentially penetrates through the lower formwork hole and the pair of first-section lower horizontal steel pipes (13) and then is connected with a first-section lower steel bar tensioner butterfly buckle (12); the stability of overall reinforcement of the formwork is achieved, and the purpose of conveniently putting the rubbles is achieved.

Description

Technical Field

[0001] The utility model relates to a template, in particular to a casting template structure for a counterweight type slab stone concrete embankment retaining wall. Background Art

[0002] The counterweight retaining wall is a retaining wall structure designed using the principle of gravity balance. It is a type of gravity retaining wall. It uses the gravity of the backfill on the upper part of the counterweight platform to move the center of gravity of the wall backward to resist the pressure on the outer side of the soil. It is widely used in shoulder retaining walls and slope retaining walls. The counterweight retaining wall has a special force structure and its own stability is more prominent than other forms of retaining walls, but its shape is irregular and the design height is generally high. It requires timely follow-up of the backfill of the wall, and the construction process is complicated. During the construction of the counterweight rubble concrete retaining wall, the formwork on both sides of the retaining wall is first supported, and rubble is placed during the concrete pouring process. Therefore, there are many requirements for the tension bolts of the formwork on both sides. The spacing between the two adjacent tension screws must be controlled within a larger spacing range to facilitate the placement of rubble. However, the tension force of the tension screws with a larger spacing on the formwork on both sides is limited, which cannot meet the requirements of larger lateral pressure, and is prone to mold running and slurry leakage. How to develop a formwork structure suitable for counterweight retaining walls has become a problem that needs to be solved on site. (Rebar tensioner butterfly buckle). Summary of the invention

[0003] The utility model provides a casting template structure for a counterweight type rubble concrete embankment retaining wall, which solves the technical problem of how to realize the fast, safe and stable construction of the embankment retaining wall on site.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A casting formwork structure for a counterweight-type rubble concrete embankment retaining wall comprises a retaining wall concrete foundation layer; a first casting section inner steel formwork and a first casting section outer steel formwork are respectively arranged on the retaining wall concrete foundation layer, a retaining wall first casting section space is arranged between the first casting section inner steel formwork and the first casting section outer steel formwork, a short pre-buried diagonal steel bar and a long pre-buried diagonal steel bar are respectively arranged near the first casting section inner steel formwork on the retaining wall concrete foundation layer below the first casting section space of the retaining wall, a lower formwork hole and an upper formwork hole are respectively arranged on the first casting section inner steel formwork, a pair of first-section lower horizontal steel pipes are arranged on the first casting section inner steel formwork outside the lower formwork hole, the upper ends of the short pre-buried diagonal steel bars pass through the lower formwork hole and the pair of first-section lower horizontal steel pipes in sequence and are connected with the first-section lower steel bar tensioner butterfly buckle together; on the retaining wall concrete foundation layer below the first casting section space of the retaining wall, a short pre-buried diagonal steel bar and a long pre-buried diagonal steel bar are respectively arranged near the first casting section outer steel formwork A right-side short pre-embedded diagonal steel bar and a right-side long pre-embedded diagonal steel bar are arranged, and a lower template hole of the outer steel template and an upper template hole of the outer steel template are respectively arranged on the outer steel template of the first casting section, and a pair of lower horizontal steel pipes of the outer steel template are arranged on the outer steel template of the first casting section outside the lower template hole of the outer steel template. The upper end of the right-side short pre-embedded diagonal steel bar passes through the lower template hole of the outer steel template and a pair of lower horizontal steel pipes of the outer steel template in sequence, and is connected with the butterfly buckle of the lower steel bar tensioner of the outer steel template; a pair of upper horizontal steel pipes of the outer steel template are arranged on the outer steel template of the first casting section outside the upper template hole of the outer steel template, and the upper end of the right-side long pre-embedded diagonal steel bar passes through the upper template hole of the outer steel template and a pair of upper horizontal steel pipes of the outer steel template in sequence, and is connected with the butterfly buckle of the upper steel bar tensioner of the outer steel template; a first section top fixed cross bar is arranged between the top of the inner steel template of the first casting section and the top of the outer steel template of the first casting section to realize the positioning of the upper end size of the template.

[0006] Slab concrete is poured in the first pouring section of the retaining wall, that is, slab stones are put in at the same time when the concrete is poured.

[0007] The retaining wall concrete foundation layer is arranged on the crushed stone cushion layer, and the crushed stone cushion layer is arranged on the bottom 1 of the retaining wall foundation pit; a side slope is arranged on the outer side of the retaining wall concrete foundation layer and the outer side of the steel formwork of the first pouring section, and a slope top is arranged at the top of the side slope.

[0008] The utility model changes the traditional formwork reinforcement method of using tension bolts, and adopts pre-buried inclined steel bars in the concrete foundation layer at the bottom end between the two formworks, and makes the top end of the pre-buried inclined steel bars pass through the formwork, so as to realize the reinforcement method of the formwork, that is, the stability of the overall reinforcement of the formwork is achieved, and the purpose of facilitating the placement of stone pieces is achieved, and the construction of the entire formwork system is smooth and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the template structure of the first pouring section space 6 of the retaining wall of the utility model;

[0010] Figure 2 It is a schematic diagram of the template structure of the second pouring section space 7 of the retaining wall of the utility model;

[0011] Figure 3 It is a schematic diagram of the overall structure of the retaining wall of the utility model. DETAILED DESCRIPTION

[0012] The utility model is described in detail below with reference to the accompanying drawings:

[0013] The construction process of the counterweight type rubble concrete embankment retaining wall of the utility model is as follows:

[0014] First, the slope 4 of the pre-installed retaining wall is excavated from the top of the slope 5, the crushed stone cushion layer 2 is constructed at the bottom of the slope 4, and concrete is poured on the crushed stone cushion layer 2 to form a retaining wall concrete foundation layer 3. When the concrete of the retaining wall concrete foundation layer 3 is finally set, the short pre-embedded diagonal steel bars 10, the long pre-embedded diagonal steel bars 11, the right short pre-embedded diagonal steel bars and the right long pre-embedded diagonal steel bars are respectively inserted, so that the short pre-embedded diagonal steel bars 10 and the long pre-embedded diagonal steel bars 11 are close to the pre-supported The first pouring section inner steel formwork 8 makes the right short pre-buried diagonal steel bar and the right long pre-buried diagonal steel bar close to the pre-supported first pouring section outer steel formwork 9; when the concrete of the retaining wall concrete foundation layer 3 is finally set, the first pouring section inner steel formwork 8 and the first pouring section outer steel formwork 9 are respectively supported on the top surface of the retaining wall concrete foundation layer 3, and a fixed cross bar 14 is connected between the top end of the first pouring section inner steel formwork 8 and the top end of the first pouring section outer steel formwork 9, and the two are connected. The dimensions between the templates are fixed; the top end of the short pre-embedded diagonal steel bar 10 is passed through the lower template hole on the outer steel template 9 of the first casting section and a pair of first-section lower horizontal steel pipes 13, and then connected to the butterfly buckle 12 of the lower steel bar tensioner of the first section; the top end of the long pre-embedded diagonal steel bar 11 is passed through the upper template hole on the outer steel template 9 of the first casting section and a pair of first-section upper horizontal steel pipes 15, and then connected to the butterfly buckle 16 of the upper steel bar tensioner of the first section; the inner steel template 8 of the first casting section is fixed by tightening the butterfly buckle 12 of the lower steel bar tensioner of the first section and the butterfly buckle 16 of the upper steel bar tensioner of the first section; the short pre-embedded diagonal steel bar on the right side and the long pre-embedded diagonal steel bar on the right side are fixed to the outer steel template 9 of the first casting section in the same way; concrete is poured in the first casting section space 6 of the retaining wall between the inner steel template 8 of the first casting section and the outer steel template 9 of the first casting section, and slabs of stone are placed to form a slab concrete first casting section wall 17.

[0015] When the concrete of the formed rubble concrete first casting section wall 17 has not been completely set, the second section of the pre-embedded diagonal steel bar 18 on the left and the second section of the pre-embedded diagonal steel bar on the right are inserted into the top surface of the rubble concrete first casting section wall 17, and the pre-embedded depth is not less than 20 cm; when the concrete of the rubble concrete first casting section wall 17 is completely set, the inner steel formwork 8 of the first casting section and the outer steel formwork 9 of the first casting section are removed; the inner steel formwork 21 of the second casting section is supported on the left side of the top of the rubble concrete first casting section wall 17, and the removed pair of first section upper horizontal steel pipes 15 are set on the outer side of the lower formwork hole of the inner steel formwork 21 of the second casting section, and the top end of the long pre-embedded diagonal steel bar 11 is passed through the lower formwork hole of the inner steel formwork 21 of the second casting section and the pair of first section upper horizontal steel pipes 15, and then connected with the removed first section upper steel bar tensioner butterfly buckle 16, so as to realize a pair of first section upper horizontal steel The tube 15 and the butterfly buckle 16 of the steel bar tensioner on the first section are reused; the top end of the second section pre-buried inclined steel bar 18 is passed through the upper template hole of the inner steel template 21 of the second casting section and a pair of second section upper horizontal steel pipes 19, and then connected with the butterfly buckle 20 of the steel bar tensioner on the second section, and the second section pre-buried inclined steel bar on the right side is connected with the outer steel template 22 of the second casting section in the same way, and the second section top fixed cross bar 23 is set between the upper port of the inner steel template 21 of the second casting section and the outer steel template 22 of the second casting section; finally, concrete is poured in the second casting section space 7 of the retaining wall between the outer steel template 22 of the second casting section and the inner steel template 21 of the second casting section, and stone slabs are placed to form a stone slab concrete second casting section wall; the same method is repeated until the casting of the entire retaining wall is completed in sections, and the backfill soil between the retaining wall and the slope 4 should be backfilled in time during this process.

Claims

1. A casting formwork structure for a counterweight type rubble concrete embankment retaining wall, comprising a retaining wall concrete foundation layer (3); characterized in that: A first pouring section inner steel formwork (8) and a first pouring section outer steel formwork (9) are respectively arranged on the retaining wall concrete foundation layer (3); a retaining wall first pouring section space (6) is arranged between the first pouring section inner steel formwork (8) and the first pouring section outer steel formwork (9); short pre-buried inclined steel bars (10) and long pre-buried inclined steel bars (11) are respectively arranged on the retaining wall concrete foundation layer (3) below the retaining wall first pouring section space (6); a lower formwork hole and an upper formwork hole are respectively arranged on the first pouring section inner steel formwork (8); and a first pouring section inner steel formwork (8) is provided with a first pouring section outer side of the lower formwork hole. A pair of first-section lower horizontal steel pipes (13) are provided on the steel formwork (8); the upper ends of the short pre-buried inclined steel bars (10) are sequentially passed through the lower formwork holes and the pair of first-section lower horizontal steel pipes (13) and are connected to the first-section lower steel bar tensioner butterfly buckle (12); the upper ends of the long pre-buried inclined steel bars (11) are sequentially passed through the upper formwork holes and the pair of first-section upper horizontal steel pipes (15) and are connected to the first-section upper steel bar tensioner butterfly buckle (16); and a first-section top fixing cross bar (14) is provided between the top of the first casting section inner steel formwork (8) and the top of the first casting section outer steel formwork (9).

2. The pouring formwork structure of a counterweight type rubble concrete embankment retaining wall according to claim 1 is characterized in that: Slab concrete is poured in the first pouring section space (6) of the retaining wall.

3. A casting formwork structure for a counterweight type rubble concrete embankment retaining wall according to claim 1 or 2, characterized in that: The retaining wall concrete foundation layer (3) is arranged on the crushed stone cushion layer (2), and the crushed stone cushion layer (2) is arranged on the bottom (1) of the retaining wall foundation pit; a side slope (4) is arranged outside the retaining wall concrete foundation layer (3) and the outer side steel formwork (9) of the first pouring section, and a slope top (5) is arranged at the top of the side slope (4).

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