Prefabricated open caisson integrated top cover structure and construction method

Abstract

The invention relates to a prefabricated open caisson integrated top cover structure and a construction method. The prefabricated open caisson integrated top cover structure comprises a prefabricated top pipe joint, a prefabricated top cover, a prefabricated inspection well, an auxiliary pipe barrel and a connecting column. Wherein the prefabricated pipe jacking section, the prefabricated top cover and the prefabricated inspection well are sequentially connected from bottom to top, and the interior of the prefabricated inspection well communicates with the interior of the prefabricated pipe jacking section; the prefabricated inspection well is sleeved with the auxiliary pipe barrel, and the auxiliary pipe barrel and the prefabricated pipe jacking section are coaxial and the outer diameter of the auxiliary pipe barrel is the same as that of the prefabricated pipe jacking section. The connecting column is arranged between the auxiliary pipe barrel and the prefabricated inspection well; the prefabricated top pipe joint, the prefabricated top cover and the prefabricated inspection well form an integrated top cover structure, normal sinking construction can be carried out by connecting the prefabricated top pipe joint, the prefabricated top cover and the prefabricated inspection well in a matched mode, construction of the open caisson inspection well can be directly completed only by dismantling the auxiliary pipe barrel subsequently, and therefore an existing mode that inspection well construction is carried out through building is replaced; and the labor and time cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a prefabricated caisson integrated top cover structure and a construction method. Background Art

[0002] The rotary drilling prefabricated caisson is a vertical shaft construction technology with the characteristics of small construction area and fast construction speed. It is often used in busy urban areas. It usually includes MJS soil reinforcement, rotary drilling excavation, lowering of prefabricated shaft, masonry inspection well, backfilling and other processes.

[0003] Among them, the process of building inspection wells is to carry out on-site masonry construction manually, which not only has high labor costs, but also consumes a lot of time, which is not conducive to saving construction period. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a prefabricated caisson integrated top cover structure and a construction method, and solve the problem that the construction of the inspection well on the top of the prefabricated caisson in the prior art is time-consuming and labor-intensive.

[0005] To achieve the above-mentioned purpose, the present invention provides a prefabricated caisson integrated top cover structure and construction method, including a prefabricated top pipe section, a prefabricated top cover, a prefabricated inspection well, an auxiliary pipe tube and a connecting column;

[0006] The prefabricated jacking pipe section, the prefabricated top cover and the prefabricated inspection well are connected in sequence from bottom to top, and the interior of the prefabricated inspection well is interconnected with the interior of the prefabricated jacking pipe section;

[0007] The auxiliary tube is sleeved on the outside of the prefabricated inspection well, and the auxiliary tube is coaxial with the prefabricated top pipe section and has the same outer diameter;

[0008] The connecting column is arranged between the auxiliary pipe tube and the prefabricated inspection well, and its two ends are respectively connected to the auxiliary pipe tube and the prefabricated inspection well.

[0009] By adopting this technical solution, the prefabricated jacking pipe section, prefabricated top cover and prefabricated inspection well form an integrated top cover structure that can be docked and installed with the existing conventional prefabricated pipe section. At the same time, the auxiliary pipe tube is connected to the outside of the small-section prefabricated inspection well through the connecting column. With the assistance of the auxiliary pipe tube, the overall structure composed of the prefabricated jacking pipe section, the prefabricated top cover and the prefabricated inspection well can be sunk to the specified elevation. The auxiliary pipe tube with the connecting column can be taken out by subsequently dismantling the connecting part between the connecting column and the prefabricated inspection well, completing the simultaneous construction of the caisson top cover and the inspection well, thereby replacing the existing method of constructing the inspection well through masonry, reducing manpower and time costs.

[0010] Furthermore, the top surface of the prefabricated top cover is higher than the top surface of the prefabricated top pipe section;

[0011] The inner diameter of the prefabricated top cover is the same as the inner diameter of the auxiliary tube.

[0012] By adopting this technical solution, a sleeve height is manufactured on the outside of the auxiliary pipe tube, so that when the bottom end of the auxiliary pipe tube is set to abut against the top of the prefabricated top pipe section, it can be sleeved to the outside of the auxiliary pipe tube, and the auxiliary pipe tube itself is connected to the prefabricated inspection well through the connecting column, which can increase the stability of the connection between the auxiliary pipe tube and the overall structure composed of the prefabricated top pipe section, the prefabricated top cover and the prefabricated inspection well.

[0013] Furthermore, it also includes a through hole opened on the prefabricated top cover, and the interior of the prefabricated inspection well is connected with the interior of the prefabricated top pipe section through the through hole.

[0014] Furthermore, the bottom end surface of the auxiliary tube abuts against the top end surface of the prefabricated top pipe section.

[0015] By adopting this technical solution, a support is formed between the bottom end of the auxiliary pipe and the prefabricated jacking pipe section, which can further increase the stability of the connection between the auxiliary pipe and the overall structure consisting of the prefabricated jacking pipe section, the prefabricated top cover and the prefabricated inspection well.

[0016] Furthermore, a plurality of connecting columns are provided along the circumferential direction and the height direction of the inner wall of the auxiliary tube.

[0017] By adopting this technical solution, the stability of the connection between the auxiliary pipe and the prefabricated inspection well is increased, thereby increasing the stability of the overall structure.

[0018] At the same time, the present invention also provides a construction method of a prefabricated caisson integrated top cover structure, which is based on the provided prefabricated caisson integrated top cover structure, and the use method includes the following steps:

[0019] S1. Carry out sinking construction and docking installation of conventional prefabricated caisson pipe sections;

[0020] S2, butt-join and install the prefabricated jacking pipe section with the top of the conventional prefabricated caisson pipe section that has been constructed;

[0021] S3, sinking the entire pipe segment formed by S2;

[0022] S4. Remove the auxiliary pipe tube on the prefabricated jacking section to expose the prefabricated inspection well;

[0023] S5. Backfill the soil outside the prefabricated inspection well to complete the construction.

[0024] Furthermore, step S4 includes using cutting equipment to cut the connection position between the connecting column connected to the inner side of the auxiliary pipe and the prefabricated inspection well, thereby separating the auxiliary pipe from the prefabricated inspection well, and then using lifting equipment to lift out the auxiliary pipe to expose the prefabricated inspection well.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The integrated top cover structure is composed of prefabricated top pipe sections, prefabricated top covers and prefabricated inspection wells. With the connection of auxiliary pipes, normal sinking construction can be carried out. Later, the construction of the caisson inspection well can be completed directly by simply removing the auxiliary pipes, thereby replacing the existing method of constructing inspection wells through masonry, reducing manpower and time costs.

[0027] 2. The prefabricated inspection well is fixed on the prefabricated top pipe section through the prefabricated top cover. After the prefabricated top pipe section is connected with the existing conventional pipe section, the position of the inspection well is relatively fixed. There will be no problem of deviation in the installation position of the inspection well, and it has high construction accuracy.

[0028] 3. The auxiliary pipes exist as auxiliary sinking construction parts and can be recycled after construction, saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional diagram of the prefabricated caisson integrated top cover structure in the present invention in an uninstalled state;

[0030] Figure 2 This is a three-dimensional diagram of the prefabricated caisson integrated top cover structure after removing the auxiliary pipe tube in the present invention.

[0031] Explanation of the reference numerals: 1. Prefabricated jacking pipe section; 11. Prefabricated top cover body; 12. Prefabricated inspection well; 2. Auxiliary pipe tube; 21. Connecting column. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Please see attached Figure 1-2 The present invention provides a prefabricated caisson integrated top cover structure and construction method, comprising a prefabricated jacking pipe section 1, a prefabricated top cover 11, a prefabricated inspection well 12, an auxiliary pipe tube 2 and a connecting column 21; wherein the prefabricated jacking pipe section 1, the prefabricated top cover 11 and the prefabricated inspection well 12 are connected in sequence from bottom to top, and the interior of the prefabricated inspection well 12 is interconnected with the interior of the prefabricated jacking pipe section 1; the auxiliary pipe tube 2 is sleeved on the outside of the prefabricated inspection well 12, and the auxiliary pipe tube 2 is coaxial with the prefabricated jacking pipe section 1 and has the same outer diameter; the connecting column 21 is arranged between the auxiliary pipe tube 2 and the prefabricated inspection well 12, and its two ends are respectively connected to the auxiliary pipe tube 2 and the prefabricated inspection well 12;

[0034] The prefabricated jacking pipe section 1, the prefabricated top cover 11 and the prefabricated inspection well 12 constitute an integrated top cover structure that can be docked and installed with the existing conventional prefabricated pipe section. At the same time, the auxiliary pipe tube 2 is connected to the outside of the small-section prefabricated inspection well 12 through the connecting column 21. With the assistance of the auxiliary pipe tube 2, the overall structure consisting of the prefabricated jacking pipe section 1, the prefabricated top cover 11 and the prefabricated inspection well 12 can be sunk to a specified elevation. Subsequently, the connecting column 21 and the connecting part of the prefabricated inspection well 12 can be removed to complete the simultaneous construction of the caisson top cover and the inspection well, thereby replacing the existing method of constructing the inspection well through masonry, reducing manpower and time costs.

[0035] Furthermore, the top surface of the prefabricated top cover 11 is higher than the top surface of the prefabricated jacking pipe section 1; the inner diameter of the prefabricated top cover 11 is the same as the inner diameter of the auxiliary pipe tube 2; a sleeve height is manufactured on the outside of the auxiliary pipe tube 2, so that when the bottom end of the auxiliary pipe tube 2 is set to abut against the top of the prefabricated jacking pipe section 1, it can be sleeved to the outside of the auxiliary pipe tube 2, and the auxiliary pipe tube 2 itself is connected to the prefabricated inspection well 12 through the connecting column 21, which can increase the stability of the connection between the auxiliary pipe tube 2 and the overall structure composed of the prefabricated jacking pipe section 1, the prefabricated top cover 11 and the prefabricated inspection well 12.

[0036] In order to achieve internal communication between the prefabricated inspection well 12 and the prefabricated top pipe section 1 , a matching through hole is opened on the prefabricated top cover 11 .

[0037] In order to increase the stability of the connection between the auxiliary tube 2 and the prefabricated inspection well 12 and thus increase the stability of the overall structure, a plurality of connecting columns 21 are provided along the circumference and height directions of the inner wall of the auxiliary tube 2 .

[0038] Furthermore, in order to further increase the stability of the connection between the auxiliary pipe 2 and the overall structure composed of the prefabricated jacking pipe section 1, the prefabricated top cover 11 and the prefabricated inspection well 12, the outer diameter of the auxiliary pipe 2 can be reduced without affecting the sinking construction, and a slot that is compatible with the bottom end of the auxiliary pipe 2 can be simultaneously provided on the upper part of the prefabricated jacking pipe section 1. While the auxiliary pipe 2 is fixed, its bottom end can be inserted into the top slot of the prefabricated jacking pipe section 1.

[0039] The present invention also provides a construction method for a prefabricated caisson integrated top cover structure, and the use method includes the following steps: S1, sinking construction and docking installation of conventional prefabricated caisson pipe sections; S2, docking and installing the prefabricated top pipe section 1 with the top of the conventional prefabricated caisson pipe section that has been constructed; S3, sinking the entire pipe section formed by S2; S4, removing the auxiliary pipe tube 2 on the prefabricated top pipe section 1 to expose the prefabricated inspection well 12; S5, backfilling the soil outside the prefabricated inspection well 12 to complete the construction.

[0040] Furthermore, step S4 includes using cutting equipment to cut the connection position between the connecting column 21 connected to the inner side of the auxiliary pipe tube 2 and the prefabricated inspection well 12, thereby separating the auxiliary pipe tube 2 from the prefabricated inspection well 12, and then using lifting equipment to lift out the auxiliary pipe tube 2 to expose the prefabricated inspection well 12.

[0041] The present invention is described in detail above in conjunction with the embodiments of the drawings, and those skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute limitations of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A prefabricated caisson integrated top cover structure, characterized in that: It includes prefabricated jacking section, prefabricated top cover, prefabricated inspection well, auxiliary pipe tube and connecting column; The prefabricated jacking pipe section, the prefabricated top cover and the prefabricated inspection well are connected in sequence from bottom to top, and the interior of the prefabricated inspection well is interconnected with the interior of the prefabricated jacking pipe section; The auxiliary tube is sleeved on the outside of the prefabricated inspection well, and the auxiliary tube is coaxial with the prefabricated top pipe section and has the same outer diameter; The connecting column is arranged between the auxiliary pipe tube and the prefabricated inspection well, and its two ends are respectively connected to the auxiliary pipe tube and the prefabricated inspection well.

2. The prefabricated caisson integrated top cover structure according to claim 1 is characterized in that: The top surface of the prefabricated top cover is higher than the top surface of the prefabricated top pipe section; The inner diameter of the prefabricated top cover is the same as the inner diameter of the auxiliary tube.

3. The prefabricated caisson integrated top cover structure according to claim 1 is characterized in that: It also includes a through hole opened on the prefabricated top cover, and the interior of the prefabricated inspection well is connected with the interior of the prefabricated top pipe section through the through hole.

4. The prefabricated caisson integrated top cover structure according to claim 1 is characterized in that: The bottom end surface of the auxiliary tube abuts against the top end surface of the prefabricated top pipe section.

5. The prefabricated caisson integrated top cover structure according to claim 1 is characterized in that: The connecting columns are arranged in a plurality along the circumferential direction and the height direction of the inner wall of the auxiliary tube.

6. A construction method for the prefabricated caisson integrated top cover structure according to any one of claims 1 to 5, characterized in that: The steps include: S1. Carry out sinking construction and docking installation of conventional prefabricated caisson pipe sections; S2, butt-join and install the prefabricated jacking pipe section with the top of the conventional prefabricated caisson pipe section that has been constructed; S3, sinking the entire pipe segment formed by S2; S4. Remove the auxiliary pipe tube on the prefabricated jacking section to expose the prefabricated inspection well; S5. Backfill the soil outside the prefabricated inspection well to complete the construction.

7. The construction method of the prefabricated caisson integrated top cover structure according to claim 6 is characterized in that: Step S4 includes using cutting equipment to cut the connection column connected to the inner side of the auxiliary pipe and the connection position of the prefabricated inspection well, thereby separating the auxiliary pipe from the prefabricated inspection well, and then using lifting equipment to lift out the auxiliary pipe to expose the prefabricated inspection well.

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