Prefabricated buttress retaining wall

Abstract

The application relates to a concrete buttress type retaining wall for retaining soil, in particular to a factory-precast and on-site-installed buttress type retaining wall and a manufacturing method thereof. The concrete buttress type retaining wall for retaining soil comprises a concrete buttress retaining wall (including an A bottom plate, a B buttress, a C vertical plate and a D bottom plate beam) and a concrete back pressing plate. The concrete buttress retaining wall can independently bear the earth pressure, and can also jointly bear the earth pressure together with the concrete back pressing plate. A plurality of concrete buttress retaining walls (the concrete buttress retaining wall+the concrete back pressing plate) form a continuous retaining wall, which meets the engineering requirements.

Description

Technical Field

[0001] This invention relates to a concrete buttress retaining wall for retaining soil, specifically a buttress retaining wall that is prefabricated in a factory and directly installed on site, and its manufacturing method. Background Technology

[0002] In recent years, prefabricated retaining walls have been widely used in the engineering field. This product can reduce wet work steps and the amount of construction formwork and scaffolding used during construction, thereby reducing labor consumption, lowering construction difficulty, and improving construction efficiency. Existing prefabricated buttress retaining walls, including concrete buttress retaining walls (including A-base slab, B-buttress, C-vertical slab, D-base beam) and concrete back-mounted slabs, are limited by transportation dimensions. The length of prefabricated retaining walls can generally be controlled within 30 meters, the transportation width within 5 meters, and the transportation height within 4 meters. Based on these size limitations, the thickness (i.e., transportation width) of buttress retaining walls with shorter retaining heights (generally within 8 meters) is generally within 5 meters (1 / 3 to 1 / 2 of the height), and the width (i.e., transportation height) of a single concrete buttress retaining wall (retaining unit) is controlled within 4 meters. Concrete buttress retaining walls are prefabricated in the factory and transported to the site for installation. For buttress retaining walls with high retaining heights (generally greater than 8 meters), in addition to prefabricating the concrete buttress retaining wall in the factory, a concrete backing plate is also prefabricated. After the concrete buttress retaining wall is installed on site, the concrete backing plate is placed behind it. Under the pressure of the concrete backing plate and the soil backing on it, the concrete buttress retaining wall's resistance to overturning and sliding under horizontal earth pressure is enhanced, achieving the overturning and sliding safety factor required by national standards for concrete buttress retaining walls. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated buttress retaining wall and its manufacturing method, which can overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, this invention provides the following technical solution: a prefabricated buttress retaining wall includes a concrete buttress retaining wall (including a base slab A, a buttress B, a vertical slab C, and a base slab beam D) and a concrete back-mounted pressure slab. According to... Figure 2 The two components shown (concrete buttress retaining wall and concrete backing plate) are prefabricated in the factory; the dimensions of the concrete buttress retaining wall are as follows: Figure 3 As shown, the reinforcement is in accordance with Figure 4 , Figure 5 , Figure 6 As shown, the dimensions and reinforcement of the post-concrete slab are in accordance with... Figure 7 As shown.

[0005] Figure 4The concrete buttress retaining wall base slab A is provided with upper longitudinal reinforcement (1), upper transverse reinforcement (2), lower longitudinal reinforcement (3), and lower transverse reinforcement (4). The concrete buttress retaining wall base slab beam D is provided with upper reinforcement (5), lower reinforcement (6), and stirrups (7).

[0006] Figure 5 The concrete buttress retaining wall B is provided with inclined reinforcement (8), horizontal reinforcement (9), and vertical reinforcement (10).

[0007] Figure 6 The concrete buttress retaining wall slab C is provided with transverse reinforcement (11) on the outside of the retaining wall, vertical reinforcement (12) on the outside of the retaining wall, vertical reinforcement (13) on the lower part of the retaining wall, transverse reinforcement (14) on the lower part of the retaining wall, vertical reinforcement (15) on the upper part of the retaining wall, and transverse reinforcement (16) on the upper part of the retaining wall.

[0008] Figure 7 The concrete back plate is provided with upper longitudinal reinforcement (17), transverse longitudinal reinforcement (18), lower longitudinal reinforcement (19), transverse short reinforcement (20), longitudinal short reinforcement (21), short beam stirrups (22), and long beam stirrups (23).

[0009] After the retaining wall foundation is excavated at the construction site, a concrete leveling layer is poured. Before the leveling layer has initially set, the concrete buttress retaining wall is hoisted onto the leveling layer. Then, the concrete backing plate is adjusted onto the leveling layer, and the short beam of the concrete backing plate is placed sideways on the bottom beam of the concrete buttress retaining wall (e.g., Figure 1 Then, by repeatedly extending forward, a row of retaining walls can be obtained. Attached Figure Description

[0010] Figure 1 Concrete buttress retaining wall + concrete post-pressing plate combination diagram Figure 2 Removal and Analytical Drawings of Concrete Buttress Retaining Wall and Concrete Rear Pressure Plate Figure 3 Elevation drawing of concrete buttress retaining wall Figure 4 Reinforcement drawing of concrete buttress retaining wall base slab Figure 5 Reinforcement drawing of concrete retaining wall Figure 6 Reinforcement drawing of concrete buttress retaining wall slab Figure 7 Elevation and reinforcement details of the concrete post-pressing slab.

Claims

1. A prefabricated buttress retaining wall, comprising a concrete buttress retaining wall (including a base slab A, a buttress B, a vertical slab C, and a base slab beam D) and a concrete post-tensioning slab. Its characteristic is: The concrete buttress retaining wall base slab A is provided with upper longitudinal reinforcement (1), upper transverse reinforcement (2), lower longitudinal reinforcement (3), and lower transverse reinforcement (4); the buttress B is provided with diagonal reinforcement (8), buttress transverse reinforcement (9), and buttress vertical reinforcement (10); the vertical slab C is provided with outer transverse reinforcement (11), outer vertical reinforcement (12), lower vertical reinforcement (13), lower transverse reinforcement (14), upper vertical reinforcement (15), and upper transverse reinforcement (16); the base slab beam D is provided with upper reinforcement (5), lower reinforcement (6), and stirrups (7). The concrete back pressure slab is provided with upper continuous longitudinal reinforcement (17), transverse continuous longitudinal reinforcement (18), lower continuous longitudinal reinforcement (19), transverse short reinforcement (20), longitudinal short reinforcement (21), short beam stirrups (22), and long beam stirrups (23).

2. The prefabricated buttress retaining wall according to claim 1, characterized in that: The concrete buttress retaining wall has the following cross-sectional dimensions: E = 100-3000 mm, F = 100-3000 mm, G = 100-3000 mm, H = 1000-30000 mm, J = 100-3000 mm, K = 100-1000 mm, L = 100-1000 mm, M = 500-3000 mm, N = 100-1000 mm, P = 10-1000 mm, and Q = 100-1000 mm; the concrete back-pressing plate has the following cross-sectional dimensions: R = 100-1000 mm, S = 100-10000 mm, T = 100-5000 mm, U = 100-2000 mm, V = 100-1000 mm, and W = 500-5000 mm.

3. A prefabricated buttress retaining wall according to claim 1, characterized in that: The concrete buttress retaining wall base slab A is provided with the following: the upper longitudinal reinforcement (1) is bent slightly downward as shown in the figure, the diameter of the reinforcement is 6-40 mm, the spacing is 30-400 mm; the upper transverse reinforcement (2) is a straight reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the lower longitudinal reinforcement (3) is a straight reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the lower transverse reinforcement (4) is a straight reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm.

4. A prefabricated buttress retaining wall according to claim 1, characterized in that: B. The buttress is provided with diagonal reinforcement (8) with both ends bent (according to the concrete design specifications) and anchored into the concrete at both ends, with a diameter of 6-40 mm and a spacing of 30-400 mm; the buttress transverse reinforcement (9) with both ends bent at 90 degrees, with a bending length of 400 mm, and the bent parts of the front and rear rows of reinforcement cross and overlap at both ends, or can be in the form of stirrups to form a rectangular circle, with a diameter of 6-40 mm and a spacing of 30-400 mm; the buttress vertical reinforcement (10) with both ends bent at 90 degrees, with a bending length of 400 mm; the bent parts of the front and rear rows of reinforcement cross and overlap at both ends, or can be in the form of stirrups to form a rectangular circle, with a diameter of 6-40 mm and a spacing of 30-400 mm.

5. A prefabricated buttress retaining wall according to claim 1, characterized in that: C-shaped retaining wall is provided with the following: outer side horizontal reinforcement (11) with a diameter of 6-40 mm and a spacing of 30-400 mm, configured as structural reinforcement; outer side vertical reinforcement (12) with a diameter of 6-40 mm and a spacing of 30-400 mm, configured as structural reinforcement; lower side vertical reinforcement (13) with a diameter of 6-40 mm and a spacing of 30-400 mm; lower side horizontal reinforcement (14) with a diameter of 6-40 mm and a spacing of 30-400 mm; upper side vertical reinforcement (15) with a diameter of 6-40 mm and a spacing of 30-400 mm, configured as structural reinforcement; upper side horizontal reinforcement (16) with a diameter of 6-40 mm and a spacing of 30-400 mm.

6. A prefabricated buttress retaining wall according to claim 1, characterized in that: The bottom beam of the D slab is provided with upper reinforcement (5) with a diameter of 6-40 mm and a spacing of 30-400 mm; lower reinforcement (6) is configured as structural reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; stirrups (7) are configured with a diameter of 6-40 mm, with 2-10 stirrup legs and a spacing of 30-400 mm.

7. A prefabricated buttress retaining wall according to claim 1, characterized in that: The concrete back plate is provided with the following: the upper longitudinal reinforcement (17) is configured as structural reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the transverse longitudinal reinforcement (18) is configured as structural reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the lower longitudinal reinforcement (19) is configured with a diameter of 6-40 mm and a spacing of 30-400 mm; the transverse short reinforcement (20) is configured as structural reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the longitudinal short reinforcement (21) is configured as structural reinforcement with a diameter of 6-40 mm and a spacing of 30-400 mm; the short beam stirrups (22) are configured with a diameter of 6-40 mm, with 2-10 stirrup legs and a spacing of 30-400 mm; the long beam stirrups (23) are configured with a diameter of 6-40 mm, with 2-10 stirrup legs and a spacing of 30-400 mm.

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