CN103334440B - Detachable circular foundation pit suspension device and equipment - Google Patents
Detachable circular foundation pit suspension device and equipment Download PDFInfo
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- CN103334440B CN103334440B CN201310279467.XA CN201310279467A CN103334440B CN 103334440 B CN103334440 B CN 103334440B CN 201310279467 A CN201310279467 A CN 201310279467A CN 103334440 B CN103334440 B CN 103334440B
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Abstract
The invention discloses a kind of Detachable circular foundation pit suspension device and equipment, belong to municipal construction apparatus field.This device comprises: multiple supporting and protection structure unit, expansion bend and multiple hoop connecting elements; Wherein, described multiple supporting and protection structure unit connects into cirque structure body by expansion bend and multiple hoop connecting elements, and described expansion bend can adjust the diameter dimension of described cirque structure body.The present invention also discloses a kind of pattern foundation pit supporting structure equipment.Suspension device is wherein formed by multiple supporting and protection structure unit, expansion bend and multiple hoop connecting elements to be a kind ofly convenient to dismounting and can to ensure the device being applicable to small-scale pit supporting of stabilized structure, has and does not affect environment, construction is fast, cost is low advantage.
Description
Technical field
The present invention relates to Municipal Engineering Construction equipment, particularly relate to a kind of Detachable circular foundation pit suspension device and equipment.
Background technology
Underground pipeline layout and reinstatement works are the important component parts in Municipal engineering.No matter adopt which kind of tunneling underground pipeline construction mode, all inevitably will build a large amount of foundation ditches and vertical active well, for no-excavation construction method-pipe in pipe pulling construction, about about 50 meters just need on the circuit of underground utilities, install an active well.These foundation ditches or active well mostly belong to temporary structure thing, treat that pipeline construction will backfill after complete.Such foundation ditch must observe the relevant specification of building foundation pit.Traditional construction method, as steel sheet pile, diaphragm wall, open caisson etc., long construction period, cost are high, a lot of material can not recycling, particularly concrete supporting structure, mostly structure cannot be removed completely after having constructed, affect first to surrounding enviroment, be that Municipal Engineering Construction will bring inconvenience from now on simultaneously.Therefore, research and development one detachably can reusable foundation pit supporting construction, not only has important engineering practical value, and has positive effect to surrounding enviroment protection.
Beijing Longkexin Trenchless Engineering Co., Ltd. have developed a kind of helical steel work foundation pit supporting system, the diameter being 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 cylindrical shape on the whole, this supporting and protection structure is to a certain degree accelerating construction speed, reducing cost and is having advantages such as can repeating recycling.
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, although supporting and protection structure resistance to overturning is better, easily cause local displacement excessive.
(2) in pipe sheet assembling process, because which floor steel work self gravitation, much larger than the side frictional resistance of foundation ditch inwall, therefore needs steel work structure hoisting, construction risk factor is increased above.
(3) because spirality supporting and protection structure material is steel work, self gravitation is large, simultaneously the excavation of foundation ditch cannot ensure again the circle into rule, thus be difficult in construction to ensure by the intrinsic radian of structure and size assembled, the gap between adjacent two layers support unit is larger.
(3) dismantle due to soil pressure effect in template procedure, structure dismounting difficulty, easily there is collapse accident in foundation ditch.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of Detachable circular foundation pit suspension device and equipment, local distortion or surface settlement can be reduced in construction, after construction, dismounting removes easily, thus after solving the construction of current foundation pit supporting construction, the comparatively large and dismounting of local displacement removes the problem of difficulty.
The technical scheme solved the problems of the technologies described above is as follows:
The embodiment of the present invention provides a kind of Detachable circular foundation pit suspension device, comprising:
Multiple supporting and protection structure unit, expansion bend and multiple hoop connecting elements; Wherein,
Described multiple supporting and protection structure unit connects into cirque structure body by expansion bend and multiple hoop connecting elements, and described expansion bend can adjust the diameter dimension of described cirque structure body, and can make supporting and protection structure and foundation ditch inwall closely connected, increase side friction.
The embodiment of the present invention provides a kind of pattern foundation pit supporting structure equipment, comprising:
At least two Detachable circular foundation pit suspension devices and multiple vertical connecting elements; Wherein,
The vertical layered closed assembly of described each Detachable circular foundation pit suspension device arranges and forms cirque structure body, and described vertical connecting elements is vertically connected between the supporting and protection structure unit of each layer Detachable circular foundation pit suspension device.
Beneficial effect of the present invention is: formed by multiple supporting and protection structure unit, expansion bend and multiple hoop connecting elements and be a kind ofly convenient to dismounting and can ensure the device being applicable to small-scale pit supporting of stabilized structure, has and does not affect environment, construction is fast, cost is low advantage.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the Detachable circular foundation pit suspension device that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the supporting and protection structure unit of the Detachable circular foundation pit suspension device that Fig. 2 provides for the embodiment of the present invention;
The top view of the supporting and protection structure unit of the Detachable circular foundation pit suspension device that Fig. 2 a provides for the embodiment of the present invention;
The schematic diagram of the cushion block of the Detachable circular foundation pit suspension device that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram of the expansion bend of the Detachable circular foundation pit suspension device that Fig. 4 provides for the embodiment of the present invention;
Fig. 4 a is that A-A in Fig. 4 is to sectional view;
Fig. 4 b is the B place close-up schematic view in Fig. 4;
The schematic diagram of the hoop connecting elements of the Detachable circular foundation pit suspension device that Fig. 5 provides for the embodiment of the present invention;
The hoop connecting elements side sectional view of the Detachable circular foundation pit suspension device that Fig. 5 a provides for the embodiment of the present invention;
The structural representation of the pattern foundation pit supporting structure equipment that Fig. 6 provides for the embodiment of the present invention.
Detailed description of the invention
Be clearly and completely described the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
The embodiment of the present invention provides a kind of Detachable circular foundation pit suspension device, and as shown in Figure 1, this device comprises:
Multiple supporting and protection structure unit 1, expansion bend 3 and multiple hoop connecting elements 2;
Wherein, multiple supporting and protection structure unit 1 connects into cirque structure body by expansion bend 3 and multiple hoop connecting elements 2, and expansion bend 3 can adjust the diameter dimension of described cirque structure body, thus can make supporting and protection structure and foundation ditch inwall closely connected, increase side friction.
General employing six supporting and protection structure unit 1 connect into through four hoop connecting elementss 2 suspension device that has the cirque structure of little opening, 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 formed, thus the suspension device of formation can be finely tuned in foundation ditch, support and be adjacent on foundation ditch inwall.
In above-mentioned suspension device, each supporting and protection structure unit 1 structure is all identical, and as shown in Fig. 2, Fig. 2 a, each supporting and protection structure unit is made up of with the curved body 12 being fixedly installed on described curved middle part, rectangular slab side curved rectangular slab 11;
Multiple cushion block 13 (cushion block structure as shown in Figure 3) is provided with between described body 12 and described curved rectangular slab 11, make to be separated between at least one place in the two ends place of described body 12 and centre with described curved rectangular slab to have space, the two ends place of curved body 12 is provided with bolt hole 14; Hoop connecting elements 2 can be facilitated to be sleeved on the end of this curved body 12 by this space, and then be coordinated with bolt by bolt hole 14 and be fixedly connected with.
In 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, according to the needs of institute's supporting foundation pit diameter dimension, different length can be selected.
In above-mentioned suspension device, described expansion bend 3, as shown in Fig. 4, Fig. 4 a, Fig. 4 b, comprising: tube connector 33 and two connectors 31,32; Wherein, tube connector 33 two ends are equipped with internal thread, one end of two connectors 31,32 is movably connected in tube connector 33 two ends respectively by screw thread, two connectors 31,32 can be regulated like this to tube connector 33, 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 part, this card-tight part 34 can block tube connector by convenience clamping tool when regulating connector; Each connector is provided with away from the free end (free end be not namely connected with tube connector) connecting tube connector place the through hole 311 connecting supporting and protection structure unit, can be connected with supporting and protection structure unit easily by this through hole 311.
In above-mentioned suspension device, hoop connecting elements 2 is as shown in Fig. 5, Fig. 5 a, and the connecting tube being provided with connecting hole by two ends is formed with the connecting bolt (not shown) that can be arranged in connecting hole.Wherein, the internal diameter of connecting tube end is greater than the external diameter of body 12 with the junction of supporting and protection structure unit, 12a, is conveniently sleeved on the body 12 of supporting and protection structure unit 1,12a end, is connected to facilitate hoop connecting elements 2 with supporting and protection structure unit 1.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Embodiment one
The difficult problem such as the Detachable circular foundation pit suspension device that the present embodiment provides can solve that foundation pit supporting project cost in municipal engineering is high, displacement deformation is large.This Detachable circular foundation pit suspension device is applicable to the small diameter circular pattern foundation pit supporting structure of diameter less than 5 meters or 5 meters, detachably reuses.
This Detachable circular foundation pit suspension device by the supporting and protection structure unit of six steel work and four hoop tube connectors (i.e. hoop connecting elements), expansion bend is assembled forms, six supporting and protection structure unit are after four hoop tube connectors have connected, last connecting expansion device, and adjust the size of expansion bend, make the suspension device of the circular configuration of formation and foundation ditch inwall closely connected, apply a circumference stress can offsetting self gravitation simultaneously.
The structure of each parts of this suspension device is as follows:
(1) supporting and protection structure unit:
The supporting and protection structure unit of steel work adopts 1 steel pipe and rectangle steel disc to be welded, and see Fig. 2, Fig. 2 a, wherein, steel disc can adopt Q235 carbon constructional steel plate, and its arc length is 2500mm, and thickness is 4mm, and height is 200mm; Steel pipe can adopt 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, this supporting and protection structure unit also can according to the size needing selection suitable of actual institute supporting foundation pit.
(2) expansion bend:
As shown in Fig. 4, Fig. 4 a, Fig. 4 b, the supporting and protection structure unit of six steel work is after hoop connecting elements connects, the also surplus opened gap having 208mm, in order to allow the cirque structure formed can become one complete and independently can bear the circular configuration of external load, need, at steel work gap location, a retractable expansion bend is installed, this expansion bend is made up of with the connector being arranged on two ends the tube connector of centre, tube connector and connector are through being threaded, connector can stretch on tube connector, thus adjusts the length of whole expansion bend.Also the whole cirque structure suspension device of formation is made to connect into complete, a closed independent bearing structure by expansion bend.
The size of this expansion bend screw thread carries out designing according to " National 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 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 of the People's Republic of China, Standardization Administration of China, 2005) under dead load effect.
(3) hoop connecting elements (i.e. hoop tube connector):
As shown in Fig. 5, Fig. 5 a, hoop tube connector and the connected mode of supporting and protection structure unit of this suspension device are connected by docking outer tube, the mode that bolt is fixing, can the displacement of constraint criteria steel work unit tie point, rotation with in surface and torsion.Dock outer tube by a long 500mm between hoop tube connector (can steel pipe be adopted) to be connected with bolt.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 is as Fig. 4.
Through strength checking, determine the hexagon-headed bolt that bolt specification is d=M10, nominal length is 100mm, properties of product grade is 8.8, product hierarchy is A level, i.e. GB/T 5782, M10*100 (China State Bureau of Quality and Technical Supervision, 2000).
Embodiment two
The present embodiment provides a kind of Detachable circular foundation pit support apparatus, it is the support apparatus that the Detachable circular foundation pit suspension device utilizing above-described embodiment one to provide is formed, as shown in Figure 6, this equipment comprises: at least two Detachable circular foundation pit suspension devices 61 and multiple vertical connecting elements 62;
Wherein, the vertical layered closed assembly of each Detachable circular foundation pit suspension device 61 arranges and forms cirque structure body, and described vertical connecting elements 62 is vertically connected between the supporting and protection structure unit of each layer Detachable circular foundation pit suspension device.
Above-mentioned support apparatus, between the supporting and protection structure unit that vertical connecting elements is vertically connected to each layer Detachable circular foundation pit suspension device is: between the supporting and protection structure unit by anchor ear described vertical connecting elements being vertically connected to each layer Detachable circular foundation pit suspension device.
Vertical connecting elements in this support apparatus adopts vertical joint steel pipe, vertical joint steel pipe is adopted to be coupled together by every Rotating fields, support apparatus can be made to have good resistance to overturning, if arrange Multi-layer detachable to unload Circular Pit suspension device, then every adjacent three layer construction is connected by anchor ear (can adopt scaffold clasp) by vertical joint steel pipe; According to actual installation situation, every layer of suspension device even structure installs 6 vertical joint steel pipes, installation of will staggering mutually between each deck.Vertical joint steel pipe can adopt long 600mm, external diameter 50mm, the steel pipe of internal diameter 40mm.
The anchor ear of the vertical joint steel pipe of above-mentioned connection can adopt scaffold butt joint fastener, this scaffold butt joint fastener can select can be used for external diameter be 50mm steel pipe to clasp, fastener mechanical property should meet the related request (General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China of " steel tube scaffold clasp " (GB15831-2006), Standardization Administration of China, 2006).
In the supporting and protection structure unit of above-mentioned suspension device, the steel cushion block arranged under body makes the space between body and curved rectangular slab, can so that install vertical joint steel pipe, scaffold clasp is made can well to catch hoop supporting steel pipe, by arranging steel cushion block, add the Installation Flexibility of vertical joint steel pipe, also enhance integrally-built rigidity.
The overall structure of this support apparatus is
The Detachable circular foundation pit suspension device of every layer be by the supporting and protection structure unit of standard steel construction by hoop connecting elements and expansion bend assembled.First by hoop connecting elements, the standard steel construction unit of same layer is connected into the single layer structure that independently can be born external load, then by vertical joint steel pipe, each individual layer bearing structure is connected into overall structure, make it have larger rigidity, preferably stability, can be good at resisting external load.When installing the suspension device of every layer, first pass through hoop joint steel pipe by good for the supporting and protection structure cellular installation of 6 pieces of standard steel constructions; And then between remaining 21cm space, expansion bend is installed, make flood anatomical connectivity become complete, a closed independent bearing structure.Connect in aggregates by vertical joint steel pipe between each Rotating fields, every adjacent three layer construction is connected by scaffold clasp by vertical joint steel pipe; According to actual installation situation, every Rotating fields evenly installs 6 vertical joint steel pipes, and installation of will staggering mutually between each deck, the integer support equipment of formation is shown in Fig. 5.
Beneficial effect of the present invention is as follows:
(1) by arranging expansion bend, suspension device or support apparatus and Foundation Pit wall completely closely connected, thus make structure form a closed circle, the stressed change of structure more reasonable, and a precompressed effect can be provided to hole wall, suppress hole wall displacement significantly.Meanwhile, due to the existence of active compressive pre-stress, between supporting and protection structure and sidewall, frictional force increases, can the self gravitation of balanced structure, need not re-use suspension rod when thus installing.
(2) every layer of support unit forms an independently support system, can the on-the-spot spacing distance regulating adjacent two layers according to engineering geological conditions, and the gap between structure has controllability.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change 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 (8)
1. a Detachable circular foundation pit suspension device, is characterized in that, comprising:
Multiple supporting and protection structure unit, expansion bend and multiple hoop connecting elements; Wherein, described expansion bend comprises: tube connector and two connectors; Wherein, described tube connector two ends are equipped with internal thread, and one end of two connectors is movably connected in described tube connector two ends respectively by screw thread; Described tube connector middle part is provided with card-tight part; Described each connector is provided with the through hole connecting supporting and protection structure unit away from the free end connecting described tube connector place;
Described multiple supporting and protection structure unit connects into cirque structure body by expansion bend and multiple hoop connecting elements, and described expansion bend can adjust 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 up of curved rectangular slab and the curved body being fixedly installed on described curved middle part, rectangular slab side;
Be provided with multiple cushion block between described body and described curved rectangular slab, make to be separated between at least one place in the two ends place of described body and centre with described curved rectangular slab that there is space.
3. device as claimed in claim 2, it is characterized in that, the flexibility of described curved rectangular slab and curved body is 13.4%, radius of curvature is 2500mm, corresponding central angle is 60 °.
4. device as claimed in claim 2, it is characterized in that, the length of described curved rectangular slab and curved body is 2500mm.
5. the device as described in claim 2,3 or 4, is characterized in that, the two ends place of described curved body is provided with bolt hole.
6. the device as described in any one of Claims 1-4, is characterized in that, the connecting tube that described hoop connecting elements is provided with connecting hole by two ends is formed with the connecting bolt that can be arranged in described connecting hole.
7. device as claimed in claim 6, it is characterized in that, the internal diameter of described connecting tube end is greater than the external diameter with the body of the junction of described supporting and protection structure unit.
8. a Detachable circular foundation pit support apparatus, is characterized in that, comprising:
At least two Detachable circular foundation pit suspension devices as claimed in claim 1 and multiple vertical connecting elements; Wherein,
The vertical layered closed assembly of described each Detachable circular foundation pit suspension device arranges and forms cirque structure body, and described vertical connecting elements is vertically connected between the supporting and protection structure unit of each layer Detachable circular foundation pit suspension device;
Between the supporting and protection structure unit that described vertical connecting elements is vertically connected to each layer Detachable circular foundation pit suspension device be:
Between the supporting and protection structure unit by anchor ear described vertical connecting elements being vertically connected to each layer Detachable circular foundation pit suspension device.
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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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| CN103334440B true CN103334440B (en) | 2015-09-30 |
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Families Citing this family (7)
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| 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 |
| 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 |
| 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 |
| CN110185882B (en) * | 2019-05-10 | 2020-05-26 | 江苏恒达工程检测有限公司 | Method for quickly replacing pipeline for minimally invasive repair of underground drainage pipeline |
| CN111794244B (en) * | 2020-07-09 | 2021-12-17 | 三峡大学 | Circular foundation pit supporting structure and using method |
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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) |