CN103334440A - Detachable circular foundation pit supporting device and equipment - Google Patents
Detachable circular foundation pit supporting device and equipment Download PDFInfo
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- CN103334440A CN103334440A CN201310279467XA CN201310279467A CN103334440A CN 103334440 A CN103334440 A CN 103334440A CN 201310279467X A CN201310279467X A CN 201310279467XA CN 201310279467 A CN201310279467 A CN 201310279467A CN 103334440 A CN103334440 A CN 103334440A
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Abstract
The invention discloses a detachable circular foundation pit supporting device and equipment, and belongs to the field of equipment for municipal construction. The device comprises a plurality of supporting structure units, a telescopic unit and a plurality of circumferential connecting components. The supporting units are connected through the telescopic unit and the circumferential connecting components to from an annular structural body; the size of the diameter of the annular structural body can be adjusted through the telescopic unit. The detachable circular foundation pit supporting equipment form a device which is convenient to disassemble and assemble, capable of guaranteeing a stable structure and suitable for supporting of a small foundation pit through the supporting structure units, the telescopic unit and the circumferential connecting components. The detachable circular foundation pit supporting device and the detachable circular foundation pit supporting equipment have the advantages of being free of affecting the environment, fast to construct and low in cost.
Description
Technical field
The present invention relates to the municipal engineering construction and use equipment, particularly relate to a kind of detachable circular foundation pit support device and equipment.
Background technology
Underground utilities laying and reinstatement works are the important component parts in the municipal engineering of city.No matter adopting which kind of tunneling underground pipeline construction mode, all inevitably will build a large amount of foundation ditches and vertical active well, is example with no-excavation construction method-trombone slide construction, just need install an active well at the circuit of underground utilities for about about 50 meters.These foundation ditches or active well mostly belong to the temporary structure thing, treat will carry out backfill after pipeline construction finishes.Such foundation ditch must be observed the relevant specification of building foundation pit.Traditional job practices, as steel sheet pile, diaphragm wall, open caisson etc., long construction period, cost height, a lot of materials can not recycling, concrete supporting structure particularly, mostly can't fully structure be removed after construction is finished, first surrounding enviroment be affected, bring inconvenience for the construction of municipal engineering from now on simultaneously.Therefore, research and develop a kind of detachably can reusable foundation pit supporting construction, not only have the important engineering practical value, and protection has positive effect to surrounding enviroment.
Beijing Longkexin Trenchless Engineering Co., Ltd. has researched and developed a kind of helical steel work foundation pit supporting system, the diameter that is applicable to foundation ditch is 5m, cutting depth is 5m, this structure is formed by the steel structure assembling of monolithic spiral shape, be similar to cylindricly on the whole, this supporting and protection structure is to a certain degree being accelerated construction speed, reduced cost and is being had advantages such as the recycling of can repeating.
1.3.2 the shortcoming of prior art two
In work progress, still there is following problem in this spiral supporting and protection structure:
(1) steel work rear wall and foundation pit side-wall can not be closely connected, though the supporting and protection structure resistance to overturning is better, cause local displacement excessive easily.
(2) in the pipe sheet assembling process, because top which floor steel work self gravitation much larger than the side frictional resistance of foundation ditch inwall, therefore need increase the construction risk factor steel work structure hoisting.
(3) because spirality supporting and protection structure material is steel work, self gravitation is big, the excavation of foundation ditch can't guarantee to be regular circular again simultaneously, so be difficult in the construction guarantee that the gap between the adjacent two layers support unit is bigger by the intrinsic radian of structure and size assembly unit.
(3) in the dismounting template procedure because the soil pressure effect, structure dismounting difficulty, collapse accident takes place in foundation ditch easily.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of detachable circular foundation pit support device and equipment, can in construction, reduce local distortion or surface settlement, dismounting easily removes after the construction, reaches the problem that dismounting removes difficulty more greatly thereby solve present foundation pit supporting construction construction back local displacement.
The technical scheme that solves the problems of the technologies described above is as follows:
The embodiment of the invention provides a kind of detachable circular foundation pit support device, comprising:
A plurality of supporting and protection structure unit, expansion bend and a plurality of hoop connecting elements; Wherein,
Described a plurality of supportings unit connects into the cirque structure body by expansion bend and a plurality of hoop connecting elements, and described expansion bend can be adjusted the diameter dimension of described cirque structure body, and can make supporting and protection structure and foundation ditch inwall closely connected, increases side friction.
The embodiment of the invention provides a kind of pattern foundation pit supporting structure equipment, comprising:
At least two detachable circular foundation pit support devices and a plurality of vertical connecting elements; Wherein,
The vertical layered closed assembly of described each detachable circular foundation pit support device arranges and forms the cirque structure body, and described vertical connecting elements vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer.
Beneficial effect of the present invention is: form by a plurality of supporting and protection structure unit, expansion bend and a plurality of hoop connecting elements and a kind ofly be convenient to dismounting and can guarantee the device that is applicable to small-sized pattern foundation pit supporting structure that structure is firm, having does not influence environment, construction is fast, cost is low advantage.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The structural representation of the detachable circular foundation pit support device that Fig. 1 provides for the embodiment of the invention;
The schematic diagram of the supporting and protection structure unit of the detachable circular foundation pit support device that Fig. 2 provides for the embodiment of the invention;
The vertical view of the supporting and protection structure unit of the detachable circular foundation pit support device that Fig. 2 a provides for the embodiment of the invention;
The schematic diagram of the cushion block of the detachable circular foundation pit support device that Fig. 3 provides for the embodiment of the invention;
The schematic diagram of the expansion bend of the detachable circular foundation pit support device that Fig. 4 provides for the embodiment of the invention;
Fig. 4 a is that A-A among Fig. 4 is to sectional view;
Fig. 4 b is the local enlarged diagram in B place among Fig. 4;
The schematic diagram of the hoop connecting elements of the detachable circular foundation pit support device that Fig. 5 provides for the embodiment of the invention;
The hoop connecting elements side sectional view of the detachable circular foundation pit support device that Fig. 5 a provides for the embodiment of the invention;
The structural representation of the pattern foundation pit supporting structure equipment that Fig. 6 provides for the embodiment of the invention.
The specific embodiment
Below the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the invention provides a kind of detachable circular foundation pit support device, and as shown in Figure 1, this device comprises:
A plurality of supporting and protection structure unit 1, expansion bend 3 and a plurality of hoop connecting elements 2;
Wherein, a plurality of supportings unit 1 connects into the cirque structure body by expansion bend 3 and a plurality of hoop connecting elements 2, and expansion bend 3 can be adjusted the diameter dimension of described cirque structure body, thereby can make supporting and protection structure and foundation ditch inwall closely connected, increases side friction.
Six supporting unit 1 of general employing connect into a suspension device with cirque structure of little opening through four hoop connecting elementss 2, opening part is connected by expansion bend 3, by adjusting the length of expansion bend 3, can finely tune the diameter of the cirque structure that forms, thereby the suspension device of formation can be finely tuned in foundation ditch, support being adjacent on the foundation ditch inwall.
In the above-mentioned suspension device, each supporting and protection structure unit 1 structure is all identical, and shown in Fig. 2, Fig. 2 a, each supporting and protection structure unit is made of curved rectangular slab 11 and the curved body 12 that is fixedly installed on described curved rectangular slab one side middle part;
Be provided with a plurality of cushion block 13(cushion block structures between described body 12 and the described curved rectangular slab 11 as shown in Figure 3), make to separate between the two ends place of described body 12 and middle at least one place and the described curved rectangular slab to have the space, the place, two ends of curved body 12 is provided with bolt hole 14; Can make things convenient for hoop connecting elements 2 to be sleeved on the end of this curved body 12 by this space, and then cooperate fixedly connected with bolt by bolt hole 14.
In the above-mentioned suspension device, the flexibility of described curved rectangular slab 11 and curved body 12 is 13.4%, radius of curvature is 2500mm, corresponding central angle is that the length of 60 ° of general curved rectangular slabs and curved body is 2500mm, can select different length according to the needs of institute's supporting foundation pit diameter dimension.
In the above-mentioned suspension device, described expansion bend 3 comprises shown in Fig. 4, Fig. 4 a, Fig. 4 b: tube connector 33 and two connectors 31,32; Wherein, tube connector 33 two ends are equipped with internal thread, two connectors 31, an end of 32 are movably connected in tube connector 33 two ends by screw thread respectively, can regulate two connectors 31,32 to tube connector 33 like this, shorten the length of whole expansion bend 3, oppositely regulate the length of two connectors 31,32 lengthening expansion bends;
Be provided with card-tight part 34 in tube connector 33 middle parts, this card-tight part 34 can conveniently when regulating connector block tube connector with clamping tool; Each connector is provided with the through hole 311 that connects the supporting and protection structure unit away from the free end (i.e. the free end that is not connected with tube connector) that connects the tube connector place, can be connected with the supporting unit easily by this through hole 311.
In the above-mentioned suspension device, hoop connecting elements 2 is shown in Fig. 5, Fig. 5 a, and the connecting tube that is provided with connecting hole by two ends constitutes with the connecting bolt (not shown) that can be arranged in the connecting hole.Wherein, the internal diameter of connecting tube end greater than with the body 12 of the junction of supporting and protection structure unit, the external diameter of 12a, conveniently be sleeved on body 12, the 12a end of supporting unit 1, be connected with supporting unit 1 to make things convenient for hoop connecting elements 2.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Embodiment one
The detachable circular foundation pit support device that present embodiment provides can solve foundation pit supporting project cost height in the municipal engineering, displacement deformation big etc. a difficult problem.This detachable circular foundation pit support device is applicable to the small diameter circular pattern foundation pit supporting structure of diameter below 5 meters or 5 meters, the detachable repeated use.
This detachable circular foundation pit support device is made of supporting unit and four hoop tube connectors (being the hoop connecting elements), an expansion bend assembly unit of six steel work, six supporting unit are after four hoop tube connectors connections are finished, connect expansion bend at last, and the size of adjustment expansion bend, make suspension device and the foundation ditch inwall of circular configuration of formation closely connected, apply the circumference stress that to offset self gravitation simultaneously.
The structure of these each parts of suspension device is as follows:
(1) supporting unit:
The supporting unit of steel work adopts 1 steel pipe and rectangle steel disc to be welded, and sees Fig. 2, Fig. 2 a, and wherein, steel disc can adopt the Q235 carbon constructional steel plate, and its arc length is 2500mm, and thickness is 4mm, and height is 200mm; Steel pipe can adopt the Q235 steel pipe, and arc length is 2500mm, and its external diameter is 50mm, and wall thickness is 5mm; The flexibility of steel pipe, steel disc is 13.4%, and its radius of curvature is 2500mm, and corresponding central angle is 60 °.Can know that suitable dimensions also can be selected according to the needs of actual institute supporting foundation pit in this supporting unit.
(2) expansion bend:
Shown in Fig. 4, Fig. 4 a, Fig. 4 b, the supporting unit of six steel work is after the hoop connecting elements connects, also remain the opened gap that 208mm is arranged, in order to allow the cirque structure that forms to become a circular configuration complete and that can independently bear external load, need a retractable expansion bend be installed at the steel work gap location, this expansion bend is made of with the connector that is arranged on two ends the tube connector of centre, tube connector and connector are through being threaded, connector can be flexible at tube connector, thereby adjust the length of whole expansion bend.Also make the whole cirque structure suspension device of formation connect into complete, a closed independent bearing structure by expansion bend.
The size of this expansion bend screw thread designs according to " State Standard of the People's Republic of China-trapezoidal thread part 1 ".Thread type is chosen as the trapezoidal thread that nominal diameter is 50mm, and pitch is 8mm, and height of thread is 4mm, and thread crest and tooth bottom width are 2.928mm, and the ridge side angle is 30 °, and screw thread is labeled as Tr50 * 8(trapezoidal thread, diameter 50, pitch 8).Through checking computations, screw thread can keep self-locking (General Administration of Quality Supervision, Inspection and Quarantine o of the People's Republic of China, Standardization Administration of China, 2005) under the dead load effect.
(3) hoop connecting elements (being the hoop tube connector):
Shown in Fig. 5, Fig. 5 a, the hoop tube connector of this suspension device and the connected mode of supporting unit are to be connected by the butt joint outer tube, the mode of bolt, rotation and reversing in displacement that can constraint criteria steel work unit tie point, the plane.Be connected with bolt by a long 500mm butt joint outer tube between the hoop tube connector (can adopt steel pipe).The external diameter of hoop tube connector is 70mm, and wall thickness is 5mm, and its radius of curvature is 2500mm, and corresponding central angle is 10 °; Bolt hole is of a size of 20mm * 14mm.The structure of hoop tube connector such as Fig. 4.
Through strength checking, determine that bolt specification is that d=M10, nominal length are that 100mm, properties of product grade are 8.8, product hierarchy is the hexagon-headed bolt of A level, namely GB/T 5782, M10*100(National Quality ﹠ Technology Inspection Bureau, 2000).
Embodiment two
Present embodiment provides a kind of detachable circular pattern foundation pit supporting structure equipment, it is the support apparatus that utilizes detachable circular foundation pit support device that above-described embodiment one provides to form, as shown in Figure 6, this equipment comprises: at least two detachable circular foundation pit support devices 61 and a plurality of vertical connecting elements 62;
Wherein, each detachable circular foundation pit support device 61 vertical layered closed assembly arranges and forms the cirque structure body, and described vertical connecting elements 62 vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer.
Above-mentioned support apparatus, vertical connecting elements vertically are connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer: by anchor ear described vertical connecting elements vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer.
Vertical connecting elements in this support apparatus adopts the vertical steel pipe that connects, adopt the vertical steel pipe that connects that every layer of structure coupled together, can make support apparatus have resistance to overturning preferably, if the detachable circular foundation pit support device of multilayer is set, then every adjacent three layer construction is connected by anchor ear (can adopt scaffold clasp) by vertical connection steel pipe; According to the actual installation situation, every layer of suspension device even structure installed 6 vertical connection steel pipes, the installation of will staggering mutually between each deck.The vertical steel pipe that connects can adopt long 600mm, external diameter 50mm, the steel pipe of internal diameter 40mm.
The anchor ear that above-mentioned connection vertically connects steel pipe can adopt scaffold to clasp, this scaffold to clasp optional with can be used for external diameter be the 50mm steel pipe to clasp, the fastener mechanical property should satisfy " steel tube scaffold clasp " related request (General Administration of Quality Supervision, Inspection and Quarantine o of the People's Republic of China (GB15831-2006), Standardization Administration of China, 2006).
In the supporting unit of above-mentioned suspension device, the steel cushion block that arranges under body makes the space between body and the curved rectangular slab, can be so that the vertical steel pipe that connects be installed, make scaffold clasp can well catch the hoop supporting steel pipe, by the steel cushion block is set, increase the Installation Flexibility of vertical connection steel pipe, also strengthened integrally-built rigidity.
The overall structure of this support apparatus is
Every layer detachable circular foundation pit support device is assembled by hoop connecting elements and expansion bend by the supporting unit of standard steel construction.At first will connect into a single layer structure that can independently bear external load with the standard steel construction unit of one deck by the hoop connecting elements, by vertical connection steel pipe each individual layer bearing structure is connected into overall structure then, make it have bigger rigidity, stable preferably, can be good at resisting external load.When the suspension device of installing every layer, at first install by the supporting unit of hoop connection steel pipe with 6 standard steel constructions; And then between remaining 21cm space expansion bend is installed, make whole layer structure connect into complete, a closed independent bearing structure.Connect in aggregatesly between each layer structure by vertical connection steel pipe, every adjacent three layer construction is connected by scaffold clasp by vertical connection steel pipe; According to the actual installation situation, every layer of even structure installed 6 vertical steel pipes that connect, the installation of will staggering mutually between each deck, and the whole support apparatus of formation is seen Fig. 5.
Beneficial effect of the present invention is as follows:
(1) by expansion bend is set, suspension device or support apparatus and foundation ditch hole wall is closely connected fully, thereby makes structure form the circle of a sealing, the stressed change of structure more reasonable, and can provide a precompressed effect to the hole wall, suppress hole wall displacement significantly.Simultaneously, because the initiatively existence of compressive pre-stress, frictional force increases between supporting and protection structure and the sidewall, self gravitation that can balanced structure, thereby needn't re-use suspension rod when installing.
(2) every layer of support unit constitutes an independently support system, can be on-the-spot regulates the spacing distance of adjacent two layers according to engineering geological conditions, and the gap between the structure has controllability.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (10)
1. a detachable circular foundation pit support device is characterized in that, comprising:
A plurality of supporting and protection structure unit, expansion bend and a plurality of hoop connecting elements; Wherein,
Described a plurality of supportings unit connects into the cirque structure body by expansion bend and a plurality of hoop connecting elements, and described expansion bend can be adjusted the diameter dimension of described cirque structure body.
2. device as claimed in claim 1 is characterized in that, described each supporting and protection structure unit is made of curved rectangular slab and the curved body that is fixedly installed on described curved rectangular slab one side middle part;
Be provided with a plurality of cushion blocks between described body and the described curved rectangular slab, make to separate between the two ends place of described body and middle at least one place and the described curved rectangular slab to have the space.
3. device as claimed in claim 2 is characterized in that, the flexibility of described curved rectangular slab and curved body is 13.4%, radius of curvature is 2500mm, and corresponding central angle is 60 °.
4. device as claimed in claim 2 is characterized in that, the length of described curved rectangular slab and curved body is 2500mm.
5. as claim 2,3 or 4 described devices, it is characterized in that the place, two ends of described curved body is provided with bolt hole.
6. as each described device of claim 1 to 4, it is characterized in that described expansion bend comprises:
Tube connector and two connectors; Wherein,
Described tube connector two ends are equipped with internal thread, and an end of two connectors is movably connected in described tube connector two ends by screw thread respectively;
Described tube connector middle part is provided with card-tight part; Described each connector is provided with the through hole that connects the supporting and protection structure unit away from the free end that connects described tube connector place.
7. as each described device of claim 1 to 4, it is characterized in that described hoop connecting elements is provided with connecting hole by two ends connecting tube constitutes with the connecting bolt that can be arranged in the described connecting hole.
8. device as claimed in claim 7 is characterized in that, the internal diameter of described connecting tube end greater than with the external diameter of the body of the junction of described supporting and protection structure unit.
9. a detachable circular pattern foundation pit supporting structure equipment is characterized in that, comprising:
At least two detachable circular foundation pit support devices and a plurality of vertical connecting elements; Wherein,
The vertical layered closed assembly of described each detachable circular foundation pit support device arranges and forms the cirque structure body, and described vertical connecting elements vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer.
10. equipment as claimed in claim 9 is characterized in that, described vertical connecting elements vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer and is:
By anchor ear described vertical connecting elements vertically is connected between the supporting and protection structure unit of the detachable circular foundation pit support device of each layer.
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| CN201310279467.XA CN103334440B (en) | 2013-07-04 | 2013-07-04 | Detachable circular foundation pit suspension device and equipment |
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| CN201310279467.XA CN103334440B (en) | 2013-07-04 | 2013-07-04 | Detachable circular foundation pit suspension device and equipment |
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Cited By (7)
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| CN103615253A (en) * | 2013-11-21 | 2014-03-05 | 中国地质大学（北京） | Shield cutter head overhaul working well support device and equipment |
| CN103726497A (en) * | 2014-01-10 | 2014-04-16 | 中国地质大学（北京） | Pipe-jacking working well mouth reinforcing device |
| CN104632250A (en) * | 2014-12-17 | 2015-05-20 | 北京工业大学 | Prefabricated tunnel lining structure of inverted segments for round foundation pit and construction method of prefabricated tunnel lining structure |
| CN104674821A (en) * | 2014-12-29 | 2015-06-03 | 山西四建集团有限公司 | Construction method for supports of box iron supporting rack of small foundation pit |
| CN109404380A (en) * | 2018-10-10 | 2019-03-01 | 林丹 | The big load anchor ear device of cylinder |
| CN111794244A (en) * | 2020-07-09 | 2020-10-20 | 三峡大学 | Circular foundation pit supporting structure and using method |
| WO2020239080A1 (en) * | 2019-05-10 | 2020-12-03 | 江苏恒达工程检测有限公司 | Method for minimally invasive repair and rapid replacement of underground drainage pipes |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103615253A (en) * | 2013-11-21 | 2014-03-05 | 中国地质大学（北京） | Shield cutter head overhaul working well support device and equipment |
| CN103615253B (en) * | 2013-11-21 | 2016-04-27 | 中国地质大学（北京） | Shield cutter service work well suspension device and equipment |
| CN103726497A (en) * | 2014-01-10 | 2014-04-16 | 中国地质大学（北京） | Pipe-jacking working well mouth reinforcing device |
| CN103726497B (en) * | 2014-01-10 | 2016-06-22 | 中国地质大学（北京） | Upper pipe working well reinforcing device |
| CN104632250A (en) * | 2014-12-17 | 2015-05-20 | 北京工业大学 | Prefabricated tunnel lining structure of inverted segments for round foundation pit and construction method of prefabricated tunnel lining structure |
| CN104674821A (en) * | 2014-12-29 | 2015-06-03 | 山西四建集团有限公司 | Construction method for supports of box iron supporting rack of small foundation pit |
| CN104674821B (en) * | 2014-12-29 | 2016-06-01 | 山西四建集团有限公司 | Small-scale pit channel-section steel support bracket body construction method for supporting |
| CN109404380A (en) * | 2018-10-10 | 2019-03-01 | 林丹 | The big load anchor ear device of cylinder |
| WO2020239080A1 (en) * | 2019-05-10 | 2020-12-03 | 江苏恒达工程检测有限公司 | Method for minimally invasive repair and rapid replacement of underground drainage pipes |
| CN111794244A (en) * | 2020-07-09 | 2020-10-20 | 三峡大学 | Circular foundation pit supporting structure and using method |
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| CN103334440B (en) | 2015-09-30 |
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Effective date of registration: 20180706 Address after: 100083, No. 16, No. 16, Beijing, Zhi Xin Village, 304 Patentee after: Beijing Zhong Di Shield Engineering Technology Research Institute Co., Ltd. Address before: 100083 No. 29, Haidian District, Beijing, Xueyuan Road Patentee before: China University of Geosciences (Beijing) |
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