Adjustable supporting system for segmented cast-in-place static pressure open caisson construction

Abstract

The utility model discloses an adjustable support system for segmented cast-in-place static pressure open caisson construction, which comprises a plurality of adjustable supports arranged on a foundation pit, outer support template components are arranged on the adjustable supports, and the adjustable supports can drive the outer support template components to move horizontally; a plurality of adjustable inclined supporting rods are arranged between the outer supporting formwork assembly and the foundation pit, a supporting piece is arranged on the inner side of the top of the open caisson downward pressing section, an inner supporting formwork assembly is arranged on the supporting piece, and a cast-in-place area is formed between the inner supporting formwork assembly and the outer supporting formwork assembly. According to the system, the local structure can be free of disassembly and assembly, the construction efficiency is improved, the construction cost is reduced, and the system has good supporting stability, high adjustability and wide application prospects.

Description

Technical Field

[0001] The utility model relates to the technical field of template systems for caisson construction, in particular to an adjustable support system for segmented cast-in-place static pressure caisson construction. Background Art

[0002] In the construction of building caisson structure, according to the construction method, it is divided into reverse construction method and static pressure sinking method. The reverse construction method is to dig a foundation pit under the ground, dig the depth of the caisson in the foundation pit, set up templates in the excavated area, and pour concrete to form a caisson structure. This method is usually suitable for caisson structures with shallow depth and large cross-sectional area. When the caisson structure is deep, this method will cause mold explosion; static pressure sinking method is to prefabricate the caisson structure in sections in advance, and use external equipment to squeeze it downward, and sink it to the specified depth to form a caisson structure. However, after the construction of the prefabricated section method, the adjacent two sections need to be sealed and waterproofed. It is very easy to cause leakage problems later, affecting the normal operation of the equipment in the caisson structure. This scheme is based on segmented static pressure sinking and segmented casting on site after sinking, that is, first cast a part, and when the strength of the part reaches the preset value, use static pressure sinking equipment to squeeze it downward, and then continue to cast on the part, and repeat the construction until the overall construction is completed. This method effectively avoids the disadvantages of the above two construction methods. However, in this construction method, the inner and outer formwork need to be repeatedly disassembled and assembled, which is time-consuming and labor-intensive, and reduces the overall progress of the construction. Utility Model Content

[0003] The utility model aims to provide an adjustable support system for the construction of segmented cast-in-place static pressure caissons, which can realize the local structure without disassembly and assembly, improve the construction efficiency, reduce the construction cost, have good support stability, strong adjustability and broad application prospects.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An adjustable support system for the construction of a segmented cast-in-situ static pressure caisson comprises a plurality of adjustable supports arranged on a foundation pit, an outer support formwork assembly is arranged on the adjustable supports, and the adjustable supports can drive the outer support formwork assembly to move horizontally; a plurality of adjustable diagonal support rods are arranged between the outer support formwork assembly and the foundation pit, a support member is arranged on the inner side of the top of the caisson's downward pressure section, an inner support formwork assembly is arranged on the support member, and a cast-in-situ area is formed between the inner support formwork assembly and the outer support formwork assembly.

[0006] Preferably, the adjustable support includes a supporting base plate fixedly mounted on the foundation pit, a slide rail fixedly mounted on the supporting base plate, a slider slidably mounted on the slide rail, a supporting top plate fixedly mounted on the slider, a rack fixedly mounted on the bottom of the supporting top plate, a driving gear rotatably mounted on the supporting base plate, and a driving member arranged on the driving gear, the rack being meshingly connected to the driving gear, and the driving gear can be rotated by the driving member.

[0007] Preferably, two slide rails are arranged in parallel and spaced apart, and two sliding blocks are slidably mounted on each slide rail.

[0008] Preferably, a connecting sleeve is fixedly provided on the supporting top plate, and the bottom of the external supporting formwork assembly is arranged in the connecting sleeve.

[0009] Preferably, the adjustable diagonal support rod includes an embedded part fixedly arranged on the foundation pit, a fixed rod fixedly installed on one end of the embedded part, and an adjusting screw adjustably installed on one end of the fixed rod, and one end of the adjusting screw is fixedly connected to the external support formwork assembly.

[0010] In the utility model, the external support formwork assembly can be adjusted horizontally through the adjustable support. The position of the formwork can be adjusted during concrete pouring to ensure the size of the pouring structure. When sinking, the external support formwork assembly can be adjusted outward to leave space for installing the sinking equipment, avoiding repeated disassembly and assembly of the external support formwork assembly, improving construction efficiency and reducing labor costs. The adjustable diagonal brace improves the support stability of the external support formwork assembly, has a certain adjustment capability, and has a certain error adjustment capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional view of a local structure of the utility model;

[0012] Figure 2 It is a top view schematic diagram of the support system of the utility model;

[0013] Figure 3 This is a schematic diagram of the adjustable support structure of the utility model;

[0014] In the figure: 1. foundation pit; 2. adjustable bearing; 3. external support formwork assembly; 4. adjustable diagonal brace; 5. caisson lower pressure section; 6. support member; 7. internal support formwork assembly; 8. locking member; 20. support bottom plate; 21. slide rail; 22. slider; 23. support top plate; 24. rack; 25. drive gear; 26. drive member; 27. connecting sleeve; 40. embedded member; 41. fixing rod; 42. adjusting screw. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] like Figure 1 , Figure 2 and Figure 3 An adjustable support system for the construction of a segmented cast-in-place static pressure caisson is shown, comprising a plurality of adjustable supports 2 arranged on a foundation pit 1, on which an external support formwork assembly 3 is arranged, and the adjustable supports 2 can drive the external support formwork assembly 3 to move horizontally. In the present application, the caisson structure is rectangular as a whole, and two mutually perpendicular external support formwork assemblies 3 are detachably connected by fasteners. When horizontal adjustment is required, the fasteners connecting the two mutually perpendicular external support formwork assemblies 3 need to be removed first, and then each group of external support formwork assemblies 3 are adjusted separately. Specifically, the external support formwork assembly 3 is a cubic support frame formed by splicing a number of horizontally, vertically, and longitudinally set steel pipes and fasteners.

[0017] The adjustable support 2 includes a supporting base plate 20 fixedly set on the foundation pit 1, a slide rail 21 fixedly installed on the top of the supporting base plate 20 by fasteners, a slider 22 slidably installed on the slide rail 21, a supporting top plate 23 fixedly installed on the top of the slider 22 by fasteners, a rack 24 fixedly installed on the bottom of the supporting top plate 23 by fasteners, a driving gear 25 rotatably installed on the supporting base plate 23 by a pin shaft or a bearing, and a driving member 26 arranged on the driving gear 25. The rack 24 is meshedly connected with the driving gear 25. The operator can rotate the driving gear 25 through the driving member 26, and move the supporting top plate 23 through the rack 24, the slide rail 21 and the slider 22. The driving member 26 can be selected as a hand-cranked reducer, and the output end of the hand-cranked reducer is fixedly connected to the driving gear 25. In one embodiment, two slide rails 21 are provided on the support bottom plate 20. The two slide rails 21 are arranged in parallel and spaced apart. Two sliders 22 are slidably installed on each slide rail 21. Of course, three, four or other numbers of slide rails 21 can also be provided according to the length of the support bottom plate 20 and the weight of the external support formwork assembly 3. In a preferred embodiment, a connecting sleeve 27 is fixedly provided on the top of the support top plate 20 by fasteners or welding, and the bottom of the external support formwork assembly 3 is provided in the connecting sleeve 27, thereby improving the stability of the installation of the external support formwork assembly 3. In a more preferred embodiment, a locking member 8 is provided on the support bottom plate 20. The locking member 8 is used to limit the relative position of the support top plate 23 on the support bottom plate 20. The locking member 8 can be a bolt. The adjusting bolt tightens the support top plate 23 and the support bottom plate 20.

[0018] A plurality of adjustable diagonal struts 4 are arranged between the external support formwork assembly 3 and the foundation pit 1. The adjustable diagonal struts 4 include an embedded part 40 pre-buried and fixed on the foundation pit 1, a fixed rod 41 fixedly installed on one end of the embedded part 40 by thread or welding, and an adjusting screw 42 adjustably installed on one end of the fixed rod 41 by thread. One end of the adjusting screw 42 is fixedly connected to the external support formwork assembly 3 by a fastener. The adjustable diagonal struts 4 can ensure the stability of the support of the external support formwork assembly 3, and can also adjust the supporting force of the external support formwork assembly 3 on the external formwork arranged on its inner side, thereby ensuring the stability of the pouring process.

[0019] A support member 6 is provided on the inner side of the top of the caisson down-pressure section 5, and an inner support formwork assembly 7 is provided on the support member 6. A cast-in-place area is formed between the inner support formwork assembly 7 and the outer support formwork assembly 3. An outer formwork is provided on the inner side of the outer support formwork assembly 3, and an inner formwork is provided on the outer side of the inner support formwork assembly 7. Concrete is poured between the inner formwork and the outer formwork to form the next section of the caisson down-pressure section 5. The inner support formwork assembly 7 is a cubic support frame structure formed by splicing a number of horizontally, vertically, longitudinally, and obliquely set steel pipes and fasteners.

[0020] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. An adjustable support system for the construction of segmented cast-in-place static pressure caissons. Features: It includes a plurality of adjustable supports arranged on a foundation pit, on which an outer support formwork assembly is arranged, and the adjustable supports can drive the outer support formwork assembly to move horizontally; a plurality of adjustable diagonal support rods are arranged between the outer support formwork assembly and the foundation pit, a support member is arranged on the inner side of the top of the down-pressure section of the caisson, and an inner support formwork assembly is arranged on the support member, and a cast-in-place area is formed between the inner support formwork assembly and the outer support formwork assembly.

2. The adjustable support system for the construction of a segmented cast-in-place static pressure caisson according to claim 1, Features: The adjustable support includes a supporting base plate fixedly arranged on the foundation pit, a slide rail fixedly installed on the supporting base plate, a slider slidably installed on the slide rail, a supporting top plate fixedly installed on the slider, a rack fixedly installed on the bottom of the supporting top plate, a driving gear rotatably installed on the supporting base plate, and a driving member arranged on the driving gear, the rack is meshingly connected with the driving gear, and the driving gear can be rotated by the driving member.

3. The adjustable support system for the construction of a segmented cast-in-place static pressure caisson according to claim 2, Features: Two slide rails are arranged in parallel and at intervals, and two sliding blocks are slidably mounted on each slide rail.

4. The adjustable support system for the construction of a segmented cast-in-situ static pressure caisson according to claim 2 or 3, Features: A connecting sleeve is fixedly arranged on the supporting top plate, and the bottom of the external supporting formwork assembly is arranged in the connecting sleeve.

5. The adjustable support system for the construction of segmented cast-in-situ static pressure caisson according to claim 1, Features: The adjustable diagonal support rod includes an embedded part fixedly arranged on the foundation pit, a fixed rod fixedly installed on one end of the embedded part, and an adjusting screw adjustably installed on one end of the fixed rod, and one end of the adjusting screw is fixedly connected to the external support formwork assembly.

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