CN209779634U - Assembled reinforced concrete bearing structure suitable for subway station foundation ditch - Google Patents
Assembled reinforced concrete bearing structure suitable for subway station foundation ditch Download PDFInfo
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- CN209779634U CN209779634U CN201821910793.0U CN201821910793U CN209779634U CN 209779634 U CN209779634 U CN 209779634U CN 201821910793 U CN201821910793 U CN 201821910793U CN 209779634 U CN209779634 U CN 209779634U
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Abstract
An assembled reinforced concrete supporting structure suitable for a subway station foundation pit is characterized in that a cross-shaped support inclined support, a cross-shaped support middle support, a standard support and a post-cast strip joint support are of a reinforced concrete structure, prefabrication is completed in a factory, steel members are embedded in connecting positions and bolt sleeves and embedded steel bars are arranged in the connecting positions during prefabrication, and the prefabricated members are transported to a foundation pit site after the strength of the prefabricated members reaches and is qualified through inspection; installing an embedded steel plate and reserving a built-in bolt sleeve when the crown beam or the waist beam is cast in situ on the diaphragm wall, wherein the embedded steel plate is rigidly connected with the cast-in-situ concrete member; supporting the foundation through a base plate, and leveling, positioning and connecting; after the stress jack at the joint support of the post-cast strip applies axial force to reach a certain value, the sleeve is connected with the embedded steel bars, the connecting rods are installed, the high-strength quick-drying mortar is poured into the installation template, and the operations are repeated after the high-strength quick-drying mortar is excavated to the next support position until the completion. The operation suitability is strong, the structure is simple and can be recycled, the cost is low, the safety and the reliability are realized, the problem of the support rigidity and the recyclability of the reinforced concrete support is solved, and the cost is saved.
Description
Technical Field
The utility model belongs to the technical field of steel bearing structure, concretely relates to assembled reinforced concrete bearing structure suitable for subway station foundation ditch.
background
Urban subway rail transit is the backbone of urban traffic because advantages such as the fortune ability is big, the interference is little, low energy consumption, and because the rapid development in city, for practicing thrift the space subway station mostly be underground structure, subway station deep basal pit even ultra-deep basal pit uses more and more, and deep basal pit excavation supporting system is more important to the requirement of construction safety, and the support of using now mainly is two kinds of forms: one is a steel pipe support, has the advantages of turnover, high construction speed and convenient use, and has the defects of small rigidity and large deformation; the cast-in-place reinforced concrete support has the advantages of large rigidity, small deformation, no turnover, long construction period, difficult dismantling, high cost and the like. How to solve the inherent shortcomings of the two support systems, the support system has the characteristics of large rigidity, small deformation, low cost, short turnover period and the like, and becomes the research direction of subway station construction technicians.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art, the utility model aims at providing an assembled reinforced concrete bearing structure suitable for subway station foundation ditch, it has simple structure, repeatedly usable, and is with low costs, easily operation, and the security is good, the characteristics that the commonality is good.
In order to realize the purpose, the utility model discloses a technical scheme is:
The utility model provides an assembled reinforced concrete bearing structure suitable for subway station foundation ditch, including the standard props, one end of standard props and props the connection crown beam waist rail through the meter word, and prop the bracing reinforcement through the meter word and prop on standard props and crown beam waist rail, another end is connected a post-cast strip and is connected the bracing, another post-cast strip connects the bracing and props pre-buried threaded reinforcing bar through the connecting sleeve with the connection standard and prop post-cast strip and connect, and exert pressure through the stress jack who connects, and by connecting rod secondary connection, form rigid whole through cast-in-place post-cast connecting band, the standard props, meter word props the centre strut, meter word props the bracing, the bracing of casting strip joint, the standard props is propped for basin formula leveling support on the top of jack, meter word props the centre strut, meter word props the bracing, the bottom surface of casting strip joint, the lower part is the backing plate to support on the foundation ditch soil body.
The top beam waist beam, the cross brace diagonal brace, the cross brace middle brace, the standard brace and the post-cast strip joint brace are concentrically fixed through the axis positioning pin and then are rigidly bolted by a plurality of high-strength bolts.
The standard support, the Mi-shaped support middle support, the Mi-shaped support inclined support and the pouring belt joint support are installed and fixed through a height operation accurate adjusting component of the leveling jack.
Prefabricated parts such as an upper crown beam waist beam, a cross brace diagonal brace, a cross brace middle brace, a standard brace and a post-cast strip joint brace are pre-embedded with steel plate members at the positions of connecting points, the pre-embedded members go deep into a reinforced concrete structure, and the pre-embedded steel plate members have high rigidity and are internally provided with a plurality of inner sleeves with high precision.
The top beam waist rail is a cast-in-place reinforced concrete component, the cross brace diagonal brace, the cross brace middle brace, the standard brace, the axis positioning pin, the high-strength bolt and the post-cast strip joint brace are high-strength reinforced concrete prefabricated components, and the length of the post-cast strip joint brace is not more than 6 meters.
The basin-type leveling support is a steel component and is of an upper basin-type structure and a lower basin-type structure, lubricating grease is filled in the middle of the basin-type leveling support, and the basin-type leveling support can freely move except for being limited up and down.
The lifting lug is a steel ring and is pre-embedded in advance in prefabricated components such as a cross brace diagonal brace, a cross brace middle brace, a standard brace and a post-cast strip joint brace.
The stress jack is a jack capable of displaying stress.
The utility model has the advantages that:
1) By means of the sectional prefabrication of the supporting components and the pre-embedding of various devices during the prefabrication of the components, the problem that the cast-in-place reinforced concrete support is limited in use is solved, the prefabrication and transportation of the reinforced concrete support and the sectional assembly use are realized, and the applicability and the universality of the reinforced concrete support are greatly improved;
2) through rigid connection of all components, stress is exerted on the post-cast connecting band in advance through a jack to improve pre-support of the support, and the post-cast connecting band adopts high-strength quick-drying mortar, so that rigid support of a support system is realized, and the aim of reducing deformation of a foundation pit is fulfilled;
3) When the assembled supports are dismantled, the post-cast connecting bands are chiseled off, the stress jacks apply stress to relieve the axial force of the supports and then the supports are dismantled, and the reinforced concrete supports are dismantled quickly and safely, so that the purpose of shortening the construction period is achieved.
4) The reinforced concrete support has the advantages of simple structure, low cost, transportability, turnover, safety and reliability in operation, convenience in movement and stronger universality, and the assembled use of the reinforced concrete support is realized.
Drawings
Fig. 1 is a schematic view of an assembled reinforced concrete supporting structure.
FIG. 2 is a schematic plan view of an assembled reinforced concrete support
FIG. 3 is a schematic view of an assembled reinforced concrete supporting elevation
FIG. 4 is a schematic view of a post-cast connection belt
FIG. 5 is a schematic view of a support connection point structure
FIG. 6 schematic diagram of basin-type leveling support structure
FIG. 7 schematic diagram of pre-buried steel plates at the supporting connection
the device comprises a crown beam 1, a waist beam 2 m-shaped support, a diagonal support 3 m-shaped support, a standard support 4, an axis positioning pin 5, a high-strength bolt 6, a post-pouring belt joint support 7, a connecting rod 8, a stress jack 9, a connecting sleeve 10, a post-pouring connecting belt 11, a lifting lug 12, a backing plate 13, a leveling jack 14 and a basin-type leveling support 15.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in figure 7 of figure 1, an assembly type reinforced concrete supporting structure suitable for a subway station foundation pit comprises a standard support 4 and is characterized in that one end of the standard support 4 is connected with a crown beam waist beam 1 through a cross support middle support 3 and is reinforced on the standard support 4 and the crown beam waist beam 1 through a cross support inclined support 2, the other end of the standard support is connected with a post-pouring belt connecting support 7, the other post-pouring belt connecting support 7 is connected with a threaded reinforcing steel bar embedded in the post-pouring belt connecting support 7 connected with the standard support 4 through a connecting sleeve 10, pressure is applied through a connected stress jack 9, the post-pouring connecting support is connected for the second time through a connecting rod 8, a rigid whole is formed through a cast-in-place post-pouring connecting belt 11, the standard support 4, the cross support middle support 3, the cross support inclined support 2 and the pouring belt connecting support 7 are hoisted through a lifting lug 12, and the upper part of the leveling jack 14 supports the standard support 4, the cross support middle support 3, the cross support 3, the, The bottom surfaces of the cross brace inclined strut 2 and the pouring belt joint strut 7 are supported on the foundation pit soil body through a base plate 13 at the lower part.
The top beam waist rail 1, the cross brace diagonal brace 2, the cross brace middle brace 3, the standard brace 4 and the post-cast strip joint brace 7 are concentrically fixed through an axis positioning pin 5 and then rigidly bolted through a plurality of high-strength bolts 6.
The standard support 4, the Mi-shaped support middle support 3, the Mi-shaped support inclined support 2 and the pouring belt joint support 7 are installed and fixed through a height operation accurate adjusting component of the leveling jack 14.
The prefabricated components such as the upper crown beam waist beam 1, the cross brace diagonal brace 2, the cross brace middle brace 3, the standard brace 4, the post-cast strip joint brace 7 are embedded with steel plate components at the connecting point, the embedded components go deep into the reinforced concrete structure, and the embedded steel plate components have high rigidity and are internally provided with a plurality of inner sleeves with high precision.
The top beam waist rail 1 is a cast-in-place reinforced concrete component, the cross brace diagonal brace 2, the cross brace middle brace 3, the standard brace 4, the axis positioning pin 5, the high-strength bolt 6 and the post-cast strip joint brace 7 are high-strength reinforced concrete prefabricated components, and the length is not more than 6 meters.
The basin-type leveling support 15 is a steel component and has an upper basin-type structure and a lower basin-type structure, and lubricating grease is filled in the middle of the basin-type leveling support and can freely move except for being limited up and down.
The lifting lug 12 is a steel ring and is pre-embedded in advance in prefabricated components such as a cross brace inclined strut 2, a cross brace middle brace 3, a standard brace 4, a post-cast strip joint brace 7 and the like.
The stress jack 9 is a jack capable of displaying stress.
The utility model discloses a theory of operation is:
Prefabricating a cross brace diagonal brace, a cross brace middle brace, a standard brace and a post-cast strip joint brace of a reinforced concrete structure in a factory, embedding a steel member, a bolt sleeve and embedded steel bars at a connecting part during prefabrication, and transporting the prefabricated member to a foundation pit site after the strength of the prefabricated member reaches and is qualified through inspection; the method comprises the following steps of (1) casting a crown beam or a waist beam on the diaphragm wall in situ, installing an embedded steel plate and reserving a built-in bolt sleeve, wherein the embedded steel plate is rigidly connected with a cast-in-situ concrete member; the prefabricated components are hoisted by adopting lifting lugs, a foundation is supported by a base plate, and the heights and the positions of the components are accurately adjusted by adjusting jacks and a basin-type leveling support; the connection of all the assembly type components is centered and positioned through an axis positioning pin, and the high-strength bolts are rigidly connected; the post-cast strip joint support embedded steel bars are connected through a sleeve, after a stress jack applies axial force to a certain value, a connecting rod is installed, high-strength quick-drying mortar is poured into an installation template, the template is dismantled after the strength is reached, the stress jack is loosened, the leveling jack is dismantled by the unloading leveling jack, the basin-type leveling support and the base plate are removed, after the support is qualified through various checks, the next layer of foundation pit earthwork is excavated, and the operations are repeated after the support is excavated to the next support position until the completion. After the structure construction is completed, a stress jack is installed and stress is applied to support the lower support square timber, post-cast connection high-strength mortar is chiseled out manually, a connecting sleeve is removed, high-strength bolts among all components are removed, and the hoisting equipment hoists and removes all assembled components, overhauls, stores in a warehouse and stores.
Claims (8)
1. An assembled reinforced concrete supporting structure suitable for a subway station foundation pit comprises a standard support (4) and is characterized in that one end of the standard support (4) is connected with a crown beam waist beam (1) through a middle support (3) of a cross-shaped support, the standard support (4) and the crown beam waist beam (1) are reinforced through the cross-shaped support diagonal support (2), the other end of the standard support is connected with a post-cast strip connecting support (7), the other post-cast strip connecting support (7) is connected with a threaded reinforcing steel bar pre-embedded in the post-cast strip connecting support (7) connected with the standard support (4) through a connecting sleeve (10), pressure is applied through a stress jack (9) for connection, the standard support (4), the middle support (3) of the cross-shaped support, the cross-shaped support diagonal support (2) and the post-cast strip connecting support (7) are hoisted through a lifting lug (12), the upper part of the leveling jack (14) is provided with a basin-shaped leveling support (15) for supporting a standard support (4), a cross-shaped support middle support (3), a cross-shaped support inclined support (2) and the bottom surface of a post-cast strip connecting support (7), and the lower part is provided with a base plate (13) for supporting on the foundation pit soil body.
2. The assembled reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein said crown beam wale (1), cross brace diagonal brace (2), cross brace middle brace (3), standard brace (4), post-cast strip connecting brace (7) are fixed concentrically by axle center positioning pin (5) and then rigidly bolted by a plurality of high-strength bolts (6).
3. The assembled reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein said standard support (4), middle support (3), diagonal support (2) and post-cast strip connecting support (7) are installed and fixed by means of height operation accurate adjusting components of leveling jacks (14).
4. The assembly type reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein the precast components of the top beam waist beam (1), the cross brace diagonal brace (2), the cross brace middle brace (3), the standard brace (4) and the post-cast strip connecting brace (7) are pre-embedded in the connecting point position, the pre-embedded components are deep into the reinforced concrete structure, and the pre-embedded steel components are provided with a plurality of inner sleeves with high rigidity and high precision.
5. The assembled reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein said crown beam wale (1) is a cast-in-place reinforced concrete member, and said cross brace diagonal brace (2), said cross brace middle brace (3), said standard brace (4), said axle center positioning pin (5), said high-strength bolt (6), said post-cast strip connecting brace (7) are high-strength reinforced concrete prefabricated members, and the length is not more than 6 m.
6. The assembly type reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein said basin type leveling support (15) is a steel member, is a basin type structure with upper and lower sides, is filled with lubricating grease, and can move freely except for the limitation of upper and lower sides.
7. the assembly type reinforced concrete supporting structure suitable for the subway station foundation pit as claimed in claim 1, wherein said lifting lugs (12) are steel rings, and are pre-embedded in prefabricated components of a cross brace diagonal brace (2), a cross brace middle brace (3), a standard brace (4) and a post-cast strip connecting brace (7) in advance.
8. The assembled reinforced concrete supporting structure suitable for the foundation pit of the subway station as claimed in claim 1, wherein said stress jack (9) is a jack capable of displaying stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910793.0U CN209779634U (en) | 2018-11-20 | 2018-11-20 | Assembled reinforced concrete bearing structure suitable for subway station foundation ditch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821910793.0U CN209779634U (en) | 2018-11-20 | 2018-11-20 | Assembled reinforced concrete bearing structure suitable for subway station foundation ditch |
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| CN209779634U true CN209779634U (en) | 2019-12-13 |
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| CN201821910793.0U Active CN209779634U (en) | 2018-11-20 | 2018-11-20 | Assembled reinforced concrete bearing structure suitable for subway station foundation ditch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501773A (en) * | 2020-04-13 | 2020-08-07 | 中建三局集团有限公司 | Connecting structure for self-adaptive compensation of supporting axial force in concrete and using method |
| CN112012218A (en) * | 2020-07-17 | 2020-12-01 | 广州市设计院 | Main supporting and connecting method at waist beam |
| CN114016516A (en) * | 2021-11-08 | 2022-02-08 | 贵州建工集团第一建筑工程有限责任公司 | Concrete-steel structure mixed angle brace construction method |
-
2018
- 2018-11-20 CN CN201821910793.0U patent/CN209779634U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501773A (en) * | 2020-04-13 | 2020-08-07 | 中建三局集团有限公司 | Connecting structure for self-adaptive compensation of supporting axial force in concrete and using method |
| CN112012218A (en) * | 2020-07-17 | 2020-12-01 | 广州市设计院 | Main supporting and connecting method at waist beam |
| CN112012218B (en) * | 2020-07-17 | 2021-05-25 | 广州市设计院 | Main supporting and connecting method at waist beam |
| CN114016516A (en) * | 2021-11-08 | 2022-02-08 | 贵州建工集团第一建筑工程有限责任公司 | Concrete-steel structure mixed angle brace construction method |
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