Foundation at joint of concrete and soft soil

Abstract

The utility model provides a concrete and soft soil joint foundation which comprises a supporting bottom plate, a counterfort retaining wall is arranged on the supporting bottom plate and comprises a vertical plate wall and a counterfort, the counterfort is fixedly connected with the vertical plate wall, the counterfort is located on the side, close to soft soil, of the vertical plate wall, and the vertical plate wall is fixedly connected with the counterfort. The vertical plate wall and the buttress are fixedly connected with the supporting bottom plate layer, an empty box structure is arranged on a supporting bottom plate on the side, close to concrete, of the vertical plate wall, and earthwork is filled on the supporting bottom plate on the side, close to soft soil, of the vertical plate wall. The foundation pile can improve the bearing capacity of the foundation and reduce differential settlement. The counterfort retaining wall can bear horizontal soil pressure and maintain soil filling stability. The empty box structure can improve the integrity of the foundation structure and reduce the settlement difference.

Description

Technical Field

[0001] The utility model relates to the technical field of fixed buildings, in particular to a foundation at the connection between concrete and soft soil. Background Art

[0002] The foundations on both sides of the connection section of the existing sluice and levee are treated differently. The sluice is made of reinforced concrete, while the levee is mainly built on soft soil foundation. This results in different upper loads on the sluice section and the levee section, which is prone to uneven settlement, mainly manifested as bridge head jumping, road cracking, distortion, side pier deformation, sluice bypass seepage, etc. When the two sides of the sluice are connected to traffic roads and the requirements for uneven settlement are high, the foundation treatment of the sluice-levee connection section needs to be done well to control the settlement difference to meet the corresponding standard requirements. The existing drainage consolidation method and composite foundation treatment method are not ideal for controlling the settlement of soft soil foundations. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a foundation at the connection between concrete and soft soil, which can reduce the uneven settlement of the connection section of the dam.

[0004] The specific technical scheme is as follows: A foundation at the junction of concrete and soft soil, comprising a supporting base plate, a buttress-type retaining wall is arranged on the supporting base plate, the buttress-type retaining wall comprises a vertical plate wall and a buttress, the buttress is fixedly connected to the vertical plate wall, the buttress is located on the side of the vertical plate wall close to the soft soil, the vertical plate wall and the buttress are fixedly connected to the supporting base plate, an empty box structure is arranged on the supporting base plate on the side of the vertical plate wall close to the concrete, and earth is filled on the supporting base plate on the side of the vertical plate wall close to the soft soil.

[0005] Through the above technical solutions, the foundation piles can improve the bearing capacity of the foundation and reduce uneven settlement. The buttress retaining wall can bear the horizontal soil pressure and maintain the stability of the fill. The hollow box structure can improve the integrity of the foundation structure and reduce the settlement difference.

[0006] Preferably, the hollow box structure consists of one or more square or rectangular sections.

[0007] Preferably, foundation piles are arranged below the supporting base plate, and the foundation piles are used to support the base plate.

[0008] Through the above technical solution, the foundation piles can reinforce the supporting base plate, improve the bearing capacity of the foundation, and reduce uneven settlement.

[0009] Preferably, the hollow box structure comprises two layers, an upper layer and a lower layer, and the lower hollow box structure is filled with earth.

[0010] Through the above technical solution, earth is filled in the lower hollow box structure to improve the stability of the foundation at the connection between concrete and soft soil. The upper hollow box structure is hollow to reduce the weight of the foundation at the connection between concrete and soft soil to reduce the settlement of the foundation at the connection between concrete and soft soil.

[0011] Preferably, the foundation piles, supporting base plate, vertical plate wall, buttresses and hollow box structure are integrally cast by concrete.

[0012] Through the above technical solution, the overall stability of the foundation at the junction of concrete and soft soil is improved.

[0013] Preferably, a road surface foundation with a crushed stone cushion layer and a geogrid is provided above the empty box structure and above the earthwork.

[0014] Through the above technical solution, the combination of crushed stone cushion layer and geogrid plays a role in stress diffusion and reduces the settlement of road foundation.

[0015] The beneficial effects of the utility model are:

[0016] The use of an empty box structure combined with a buttress retaining wall foundation can solve the problem of uneven settlement in the gate-dam connection section. The bottom plate of the buttress retaining wall is located on the embankment side, and the empty box structure and the buttress retaining wall are cast as a whole, which can improve the overall stability of the foundation and reduce uneven settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a top view of this application;

[0020] Figure 3 for Figure 2 AA section view;

[0021] 1. Foundation piles, 2. Supporting base plate, 3. Vertical wall, 4. Buttresses, 5. Empty box structure. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Example 1

[0025] like Figure 1-3 As shown, a foundation at the junction of concrete and soft soil includes a foundation pile 1, on which a supporting base plate 2 is arranged, and the foundation pile 1 is used to support the base plate 2. A buttress-type retaining wall is arranged on the supporting base plate 2, and the buttress-type retaining wall includes a vertical plate wall 3 and a buttress 4. The buttress 4 is fixedly connected to the vertical plate wall 3. The buttress 4 is located on the side of the vertical plate wall 3 close to the soft soil, and the vertical plate wall 3 and the buttress 4 are fixedly connected to the supporting base plate 2. A hollow box structure 5 is arranged on the supporting base plate 2 on the side of the vertical plate wall 3 close to the concrete. The hollow box structure is composed of one or more square or rectangular sections. The hollow box structure 5 includes an upper and lower layer, and the lower hollow box structure 5 is filled with earth. The supporting base plate 2 on the side of the vertical plate wall 3 close to the soft soil is filled with earth.

[0026] The foundation pile 1, the supporting bottom plate 2, the vertical plate wall 3, the buttress 4 and the hollow box structure 5 are integrally cast by concrete. A road foundation with a crushed stone cushion layer and geogrid is arranged above the hollow box structure 5 and above the earthwork.

[0027] Example 2

[0028] Take the foundation where the sluice gate and the levee meet as an example

[0029] A foundation at the connection between a sluice and a dike includes a foundation pile 1, which is reinforced with cement mixing piles to improve the bearing capacity of the foundation and reduce uneven settlement. A support base plate 2 is cast with concrete on the foundation pile. A vertical plate wall 3 and a buttress 4 are cast with concrete on the support base plate 2. The buttress 4 is located on the side of the vertical plate wall 3 close to the dike, and earth is filled on the support base plate 2 close to the dike.

[0030] On the side close to the sluice gate, a hollow box structure 5 is cast with concrete. The hollow box structure 5 has two layers and multiple square or rectangular sections. The lower section is filled with earth to improve the stability of the foundation at the connection between the sluice gate and the embankment. The upper section is left empty to reduce the weight of the foundation at the connection between the sluice gate and the embankment, thereby reducing settlement.

[0031] A road foundation with a crushed stone cushion layer and geogrid is arranged above the empty box structure 5 and above the earthwork.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A foundation at the junction of concrete and soft soil, characterized in that: The invention comprises a supporting base plate (2), a buttress-type retaining wall is arranged on the supporting base plate (2), the buttress-type retaining wall comprises a vertical plate wall (3) and a buttress (4), the buttress (4) is fixedly connected to the vertical plate wall (3), the buttress (4) is located on the side of the vertical plate wall (3) close to the soft soil, the vertical plate wall (3) and the buttress (4) are fixedly connected to the supporting base plate (2), a hollow box structure (5) is arranged on the supporting base plate (2) on the side of the vertical plate wall (3) close to the concrete, and earth is filled on the supporting base plate (2) on the side of the vertical plate wall (3) close to the soft soil.

2. The foundation at the junction of concrete and soft soil according to claim 1, characterized in that: The hollow box structure is composed of one or more square or rectangular sections.

3. The foundation at the junction of concrete and soft soil according to claim 1, characterized in that: Foundation piles (1) are arranged below the supporting base plate (2), and the foundation piles (1) are used to support the base plate (2).

4. The foundation at the junction of concrete and soft soil according to claim 1, characterized in that: The hollow box structure (5) comprises two layers, an upper layer and an lower layer, and the lower hollow box structure (5) is filled with earth.

5. The foundation at the junction of concrete and soft soil according to claim 3, characterized in that: The foundation piles (1), supporting base plate (2), vertical plate wall (3), buttresses (4) and hollow box structure (5) are integrally cast by concrete.

6. The foundation at the junction of concrete and soft soil according to claim 1, characterized in that: A road surface foundation with a crushed stone cushion layer and geogrid is arranged above the empty box structure (5) and above the earthwork.

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