Sunken empty box wall structure and construction method thereof

Abstract

The invention provides a sunken empty box wall structure and a construction method thereof, and relates to the technical field of hydraulic engineering, the wall structure comprises a foundation main body, a foundation cavity is formed in the foundation main body, and the top and the bottom of the foundation main body are each provided with an opening communicated with the foundation cavity; the plurality of foundation inner partition walls are distributed in the foundation cavity, and the foundation cavity is divided into a plurality of foundation compartments by the plurality of foundation inner partition walls and the inner side of the foundation cavity; the bottom layer can be arranged on the inner side of the opening in the bottom of the foundation body in a pouring mode, the bottom of each foundation inner partition wall is connected with the bottom layer, and the interiors of the foundation compartments are used for being filled with foundation inner filling soil; due to the distribution of the plurality of foundation inner partition walls and the bottom layer of the wall body structure, the wall body structure is good in integrity, high in rigidity, high in corresponding horizontal and vertical bearing capacity and good in anti-seepage performance; the wall structure can adapt to different geological conditions and environments, saves the cost of foundation treatment, cofferdams, occupied land, demolition and the like, and is good in economical efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of water conservancy projects, and more specifically, relates to a sunken box wall structure and a construction method thereof. Background Art

[0002] When building structures such as pumping stations and sluice gates on soft soil foundations, bank (wing) wall structures for retaining soil and connecting are required on both sides of the pump house, sluice chamber, etc. When the base is a soft soil layer, conventional bank (wing) wall structures need to be appropriately treated for the foundation, with high costs. During the implementation of large-scale excavation, a large amount of land needs to be occupied (especially when the soil retaining height is relatively large), and sometimes it may be restricted by the plot, water area or surrounding conditions for excavation. Summary of the Invention

[0003] The purpose of the present invention is to provide a sunken box wall structure and a construction method thereof in view of the existing technical deficiencies, and solve the problems that conventional bank (wing) wall structures need to be treated for the foundation, with high costs, occupy a large amount of land during the implementation of large-scale excavation, and have a greater impact on the surrounding environment as mentioned in the above background art.

[0004] In order to achieve the above purpose, the present invention provides a sunken box wall structure, which includes:

[0005] A foundation main body, in which a foundation cavity is provided, and open ports communicating with the foundation cavity are provided at both the top and bottom of the foundation main body;

[0006] A plurality of foundation inner partition walls, which are distributed in the foundation cavity, and both ends of each foundation inner partition wall are connected to the inner side of the foundation cavity. The plurality of foundation inner partition walls and the inner side of the foundation cavity divide the foundation cavity into a plurality of foundation compartments;

[0007] A bottom layer, which can be arranged inside the open port at the bottom of the foundation main body, and the bottom of each foundation inner partition wall can be connected to the bottom layer. The inside of the foundation compartment is used to fill foundation inner fill.

[0008] Preferably, a cutting edge inclined outward is provided inside the open port at the bottom of the foundation main body.

[0009] Preferably, the bottom layer includes:

[0010] A sealing layer, which is connected to the inner side of the bottom of the foundation cavity, and the bottom of the foundation inner partition wall is connected to the inside of the sealing layer;

[0011] Reinforced bottom plates, which are respectively connected to the inner side of the bottom of a plurality of foundation compartments and connected to the top of the sealing layer.

[0012] Preferably, the bottom layer further includes a plurality of inserted bars, one ends of the plurality of inserted bars are arranged inside the blocking layer, and the other ends of the plurality of inserted bars are arranged inside the plurality of reinforced bottom plates.

[0013] Preferably, an embedded groove is provided on the inner side of the bottom of the foundation compartment, and the outer side of the reinforced bottom plate is embedded in the embedded groove.

[0014] Preferably, the blocking layer is a plain concrete layer, and the reinforced bottom plate is a reinforced concrete bottom plate.

[0015] Preferably, the sunken box wall structure further includes an upper retaining wall, and the upper retaining wall includes:

[0016] a retaining main body, a retaining cavity is provided inside the retaining main body, and the bottom of the retaining main body is connected to the top of the foundation main body;

[0017] a plurality of retaining inner partition walls, the plurality of retaining inner partition walls are distributed in the retaining cavity, both ends of each retaining inner partition wall are connected to the inner side of the retaining cavity, and the plurality of retaining inner partition walls and the inner side of the retaining cavity divide the retaining cavity into a plurality of retaining compartments.

[0018] A construction method for a sunken box wall structure, which is used for prefabricating and sinking a sunken box wall structure, and the construction method includes:

[0019] Prefabricating a foundation main body with a plurality of foundation compartments;

[0020] Excavating soil in the foundation compartments of the foundation main body to sink the foundation main body to the designed elevation;

[0021] Pouring plain concrete to the inner side of the bottom of the foundation main body;

[0022] Pouring reinforced concrete to the top of the plain concrete so that the plain concrete and the reinforced concrete jointly form the bottom layer;

[0023] Foundation backfill with different heights can be carried out in the plurality of foundation compartments as required;

[0024] Pouring an upper retaining wall on the top of the foundation main body to extend the height of the foundation main body.

[0025] Preferably, when prefabricating the foundation main body with a plurality of foundation compartments, the construction method further includes: prefabricating an embedded groove on the inner side of the bottom of the foundation compartment, and pouring the reinforced concrete until it fills the embedded groove.

[0026] Preferably, when pouring the plain concrete into the inner bottom of the foundation main body until it covers the bottom of the foundation compartment, the construction method further includes: inserting one end of multiple reinforcing bars into the plain concrete, and when pouring the reinforced concrete, pouring the reinforced concrete until it covers the other ends of the multiple reinforcing bars.

[0027] The present invention provides a sunken empty box wall structure, and its beneficial effects are as follows: The multiple foundation internal partition walls of the wall structure and the inner side of the foundation cavity divide the foundation cavity of the foundation main body into multiple foundation compartments, which is convenient for adjusting the balance during the sinking construction. When prefabricating and sinking this wall structure by this construction method, the foundation main body with multiple foundation compartments can be prefabricated first, and then the soil can be excavated in the multiple foundation compartments to sink the structure to the design elevation, and then the bottom layer can be cast and formed to encapsulate the bottom of the foundation main body and connect the bottom of the foundation internal partition wall with the bottom layer. Then, the foundation internal filling soil can be backfilled in the foundation compartments as needed, and the height of the foundation internal filling soil in different foundation compartments can also be adjusted according to the needs of the foundation bearing capacity and stability.

[0028] The distribution of the multiple foundation internal partition walls and the bottom layer of the wall structure makes it have good integrity, large stiffness, corresponding strong horizontal and vertical bearing capacities, and good anti-seepage performance;

[0029] When constructing this wall structure, no additional cofferdam is required, which can avoid large-scale excavation, and accordingly occupies less land and has less impact on the surrounding environment;

[0030] This wall structure can adapt to different geological conditions and environments, saves costs such as foundation treatment, cofferdam, land acquisition, and demolition, and has good economy;

[0031] When constructing this wall structure, the foundation stress can be adjusted and the uneven settlement can be reduced by adjusting the structural dimensions and the height of the filling soil in the multiple foundation compartments.

[0032] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] By describing the exemplary embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more obvious. Among them, in the exemplary embodiments of the present invention, the same reference numerals generally represent the same components.

[0034] Figure 1 Shows a flowchart of a construction method of a sunken empty box wall structure according to an embodiment of the present invention;

[0035] Figure 2 Shows a front view and sectional structure schematic diagram of a sunken empty box wall structure according to an embodiment of the present invention;

[0036] Figure 3 The figure shows a top view and sectional structural schematic diagram of a sunken empty box wall structure according to an embodiment of the present invention.

[0037] Explanation of reference numerals:

[0038] 1. Foundation main body; 2. Foundation inner partition wall; 3. Foundation inner fill; 4. Cutting edge; 5. Sealing layer; 6. Reinforced bottom plate; 7. Inserted steel bar; 8. Retaining inner partition wall; 9. Retaining main body; 10. Bracket. Detailed implementation manners

[0039] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0040] As Figure 2 and Figure 3 shown, the present invention provides a sunken empty box wall structure, which is characterized in that the wall structure includes:

[0041] A foundation main body 1, with a foundation cavity provided inside the foundation main body 1, and open openings communicated with the foundation cavity are provided at both the top and bottom of the foundation main body 1;

[0042] A plurality of foundation inner partition walls 2, which are distributed in the foundation cavity, and both ends of each foundation inner partition wall 2 are connected to the inner side of the foundation cavity. The plurality of foundation inner partition walls 2 and the inner side of the foundation cavity divide the foundation cavity into a plurality of foundation compartments;

[0043] A bottom layer, which is poured and provided inside the open opening at the bottom of the foundation main body 1. The bottom of each foundation inner partition wall 2 can be connected to the bottom layer, and the inside of the foundation compartment is used to fill the foundation inner fill 3.

[0044] Specifically, to solve the problems that the conventional bank wing wall structure requires foundation treatment, occupies a large area and has a great impact on the surrounding environment during the implementation of large-scale excavation, the present invention provides a sunken empty box wall structure. The plurality of foundation inner partition walls 2 of the wall structure and the inner side of the foundation cavity divide the foundation cavity of the foundation main body 1 into a plurality of foundation compartments, which is convenient for adjusting the balance during the sinking construction. The soil can be excavated in the plurality of foundation compartments to make the structure sink to the design elevation, and then the bottom layer is poured and formed to seal the bottom of the foundation main body 1, and the bottom of the foundation inner partition wall 2 is connected to the bottom layer. Then, the foundation inner fill 3 can be backfilled in the foundation compartment as needed, and the height of the foundation inner fill 3 in different foundation compartments can also be adjusted according to the needs of foundation bearing capacity and stability.

[0045] The distribution of multiple foundation internal partition walls 2 and the bottom layer of this wall structure makes it have good integrity, large stiffness, corresponding strong horizontal and vertical bearing capacities, and good anti-seepage performance;

[0046] This wall structure can adapt to different geological conditions and environments, saving costs such as foundation treatment, cofferdams, land acquisition, and demolition, and having good economy.

[0047] Preferably, a cutting edge 4 inclined outward is provided on the inner side of the open opening at the bottom of the foundation main body 1.

[0048] Specifically, a cutting edge 4 for cutting soil body is provided on the inner side of the open opening at the bottom of the foundation main body 1, and a certain inclination angle should be formed to facilitate the sinking of the foundation main body 1.

[0049] Preferably, the bottom layer includes:

[0050] A sealing layer 5, the sealing layer 5 is connected to the inner side of the bottom of the foundation cavity, and the bottom of the foundation internal partition wall 2 is connected to the inside of the sealing layer 5;

[0051] Reinforced bottom plates 6, multiple reinforced bottom plates 6 are respectively connected to the inner sides of the bottoms of multiple foundation compartments and are connected to the top of the sealing layer 5.

[0052] Specifically, the sealing layer 5 is hermetically connected to the inner side of the bottom of the foundation cavity without leaving gaps. The setting of the sealing layer 5 not only ensures the integrity of this wall structure but also has anti-seepage safety performance.

[0053] Preferably, the bottom layer further includes multiple inserted steel bars 7, one ends of the multiple inserted steel bars 7 are arranged inside the sealing layer 5, and the other ends of the multiple inserted steel bars 7 are arranged inside the multiple reinforced bottom plates 6.

[0054] Specifically, uniformly distributed reserved inserted steel bars 7 are arranged on the upper part of the sealing layer 5, inserted into the sealing layer 5 to a certain depth and exposed to a certain depth to strengthen the connection between the sealing layer 5 and the reinforced bottom plates 6.

[0055] Preferably, an embedded groove is provided on the inner side of the bottom of the foundation compartment, and the outer side of the reinforced bottom plate 6 is embedded in the embedded groove.

[0056] Specifically, the sealing layer 5 is a plain concrete layer, the reinforced bottom plate 6 is a reinforced concrete bottom plate, and a reinforced concrete bottom plate is poured at the top of the sealing layer 5 and inside the foundation compartment, and it should be embedded into the foundation compartment for a certain length to make the lower structure a whole and improve the vertical bearing capacity of this wall structure.

[0057] Preferably, a part of the foundation internal partition walls 2 are arranged horizontally and at intervals, and another part of the foundation internal partition walls 2 are arranged vertically and at intervals.

[0058] Specifically, multiple uniform foundation compartments are distributed in the foundation cavity, and the overall stiffness is improved.

[0059] Preferably, the sunken empty box wall structure further includes an upper retaining wall, and the upper retaining wall includes:

[0060] A retaining main body 9, a retaining cavity is provided inside the retaining main body 9, and the bottom of the retaining main body 9 is connected to the top of the foundation main body 1;

[0061] A plurality of retaining inner partition walls 8 are distributed in the retaining cavity, and both ends of each retaining inner partition wall 8 are connected to the inner side of the retaining cavity. The plurality of retaining inner partition walls 8 and the inner side of the retaining cavity divide the retaining cavity into a plurality of retaining compartments.

[0062] Specifically, to solve the problem that when the retaining height is relatively high, a counterfort empty box structure is generally adopted, and when the horizontal force is relatively large, the conventional and single counterfort empty box retaining structure often cannot meet the bearing capacity or structural function requirements; for the area adjacent to the water side where it is not possible to take good dewatering measures, a large water head difference will be formed between the water-facing side and the soil-facing side of the single counterfort empty box retaining structure, and the foundation pit is extremely prone to seepage hazards and risks during the construction process. The lower foundation main body 1 and the upper retaining wall provided in this application, the retaining main body 9 is a retaining main body 9 with a closed top, and a plurality of retaining inner partition walls 8 are arranged inside the retaining cavity of the retaining main body 9. The plurality of retaining inner partition walls 8 are respectively connected to a plurality of foundation inner partition walls 2 in a one-to-one correspondence to improve the overall stiffness and the integrity and stiffness of this part. The retaining main body 9 is used to be arranged on the top of the foundation main body 1 for application when the retaining height is relatively high, and can meet the vertical and horizontal bearing capacity requirements. And because the foundation main body 1 eliminates the slope excavation, the anti-seepage stability performance of the foundation pit is correspondingly improved, and the anti-seepage stability risk of the foundation pit is eliminated.

[0063] Preferably, the sunken empty box wall structure further includes a corbel 10, and the corbel 10 is connected to the outer side of the retaining main body 9.

[0064] Specifically, a part of the retaining inner partition walls 8 are arranged horizontally and at intervals, and another part of the retaining inner partition walls 8 are arranged vertically and at intervals. When this wall structure acts as a large-span gate pier, a corbel 10 can be arranged on the outer side of the retaining main body 9, and the position of the corbel 10 should correspond to one end of the horizontally arranged retaining inner partition wall 8.

[0065] When connecting the retaining main body 9 to the top of the foundation main body 1, attention should be paid to the treatment of the contact surface between the foundation main body 1 and the retaining main body 9 during construction.

[0066] Such as Figure 1 shown, a construction method of a sunken empty box wall structure for prefabricating and sinking a sunken empty box wall structure, this construction method includes:

[0067] Prefabricate the foundation main body 1 with a plurality of foundation compartments;

[0068] Excavate soil in the foundation compartment of the foundation main body 1 to sink the foundation main body 1 to the designed elevation;

[0069] Pour plain concrete into the inner side of the bottom of the foundation main body 1 until it is poured to cover the bottom of the foundation compartment;

[0070] Pour reinforced concrete on top of the plain concrete so that the plain concrete and the reinforced concrete jointly form the bottom layer;

[0071] Backfill foundation inner fill with different heights into multiple foundation compartments according to the stability of the foundation;

[0072] Pour the upper retaining wall on top of the foundation main body 1 to extend the height of the foundation main body 1.

[0073] Specifically, after the foundation main body 1 is prefabricated on-site and the concrete reaches the required strength, excavate soil in the foundation compartment to sink the foundation main body 1 to the designed elevation, and then carry out plain concrete sealing and pouring of reinforced concrete to form the bottom layer structure, so as to meet the required vertical and horizontal bearing capacity requirements.

[0074] During the construction of this wall structure, no additional cofferdam is required, which can avoid large-scale excavation, occupy less land and have less impact on the surrounding environment;

[0075] During the construction of this wall structure, the foundation stress can be adjusted and the differential settlement can be reduced by adjusting the structural dimensions and the filling height of the soil in multiple foundation compartments;

[0076] The upper retaining wall of this wall can further utilize the foundation cavity of the lower foundation main body 1 as needed, and can be adjusted as needed to increase the versatility of this wall structure.

[0077] Preferably, when prefabricating the foundation main body 1 with multiple foundation compartments, this construction method further includes: prefabricating an embedded groove on the inner side of the bottom of the foundation compartment, and when pouring the reinforced concrete, pouring it until it fills the embedded groove.

[0078] Preferably, when pouring the plain concrete into the inner side of the bottom of the foundation main body 1 until it is poured to cover the bottom of the foundation compartment, this construction method further includes: inserting one end of multiple anchor bars 7 into the plain concrete, and when pouring the reinforced concrete, pouring the reinforced concrete to cover the other ends of the multiple anchor bars.

[0079] Preferably, the sunken box wall structure further includes a retaining main body 9, and this construction method further includes pouring and installing the retaining main body 9 on top of the foundation main body 1 and connecting it to multiple retaining inner partition walls 8 and multiple foundation inner partition walls 2 respectively.

[0080] In summary, when prefabricating and sinking the sunken box wall structure, in addition to being applicable to conventional sluices and pumping stations, the wall structure can also be applied to new flood control projects with large and extra-large apertures and low water heads, which have seen a relatively high demand in recent years. Due to the relatively large span of the gate, the water pressure transmitted by the gate to the pier structure during water retention is correspondingly large. Therefore, higher requirements are imposed on the horizontal bearing capacity and stiffness of the abutment wall structure. Using the wall structure as its pier and also as the abutment wall yields more remarkable results.

[0081] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, nor is it limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A sunken hollow box wall structure, characterized in that, The wall structure includes: A foundation main body, inside which there is a foundation cavity, and open openings are provided at both the top and bottom of the foundation main body and are communicated with the foundation cavity; A plurality of foundation inner partition walls, which are distributed in the foundation cavity. Both ends of each foundation inner partition wall are connected to the inner side of the foundation cavity. The plurality of foundation inner partition walls and the inner side of the foundation cavity divide the foundation cavity into a plurality of foundation compartments; A bottom layer, which can be arranged inside the open opening at the bottom of the foundation main body. The bottom of each foundation inner partition wall can be connected to the bottom layer, and the inside of the foundation compartment is used to fill foundation backfill soil.

2. The sunken empty box wall structure according to claim 1, characterized in that, An inclined cutting surface is provided on the inner side of the open opening at the bottom of the foundation main body and slopes outward.

3. The sunken empty box wall structure according to claim 1, characterized in that, The bottom layer includes: A sealing layer, which is connected to the inner side of the bottom of the foundation cavity, and the bottom of the foundation inner partition wall is connected to the inside of the sealing layer; Reinforced bottom plates, and a plurality of reinforced bottom plates are respectively connected to the inner side of the bottom of a plurality of foundation compartments and are connected to the top of the sealing layer.

4. The sunken empty box wall structure according to claim 3, characterized in that The bottom layer further includes a plurality of inserted steel bars. One end of each of the plurality of inserted steel bars is arranged inside the sealing layer, and the other end of each of the plurality of inserted steel bars is arranged inside a plurality of the reinforced bottom plates.

5. The sunken empty box wall structure according to claim 3, characterized in that, An embedded groove is provided on the inner side of the bottom of the foundation compartment, and the outer side of the reinforced bottom plate is embedded in the embedded groove.

6. The sunken empty box wall structure according to claim 3, characterized in that, The sealing layer is a plain concrete layer, and the reinforced bottom plate is a reinforced concrete bottom plate.

7. A sunken empty box wall structure according to claim 1, characterized in that, The sunken box wall structure further includes an upper retaining wall body, and the upper retaining wall body includes: A retaining main body, inside which there is a retaining cavity, and the bottom of the retaining main body is connected to the top of the foundation main body; A plurality of retaining inner partition walls, which are distributed in the retaining cavity. Both ends of each retaining inner partition wall are connected to the inner side of the retaining cavity. The plurality of retaining inner partition walls and the inner side of the retaining cavity divide the retaining cavity into a plurality of retaining compartments.

8. A construction method for a sunken empty box wall structure, which is used for constructing a sunken empty box wall structure according to any one of claims 1-7, characterized in that The construction method includes: Precasting a foundation main body with a plurality of foundation compartments; Excavating soil in the foundation compartments of the foundation main body to sink the foundation main body to the design elevation; Pouring plain concrete into the inner side of the bottom of the foundation main body; Pouring reinforced concrete onto the top of the plain concrete so that the plain concrete and the reinforced concrete jointly form the bottom layer; Backfilling foundation backfill soil into a plurality of foundation compartments; Pouring an upper retaining wall body on the top of the foundation main body to extend the height of the foundation main body.

9. The construction method of a sunken empty box wall structure according to claim 8, characterized in that, When precasting the foundation main body with a plurality of foundation compartments, the construction method further includes: precasting an embedded groove on the inner side of the bottom of the foundation compartment, and when pouring the reinforced concrete, pouring until it fills the embedded groove.

10. The construction method of a sunken empty box wall structure according to claim 8, characterized in that, When pouring the plain concrete into the inner side of the bottom of the foundation main body, the construction method further includes: inserting one end of a plurality of inserted steel bars into the plain concrete, and when pouring the reinforced concrete, pouring the reinforced concrete until it covers the other end of the plurality of inserted steel bars.

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