CN104099933B - Support system ruggedized construction after a kind of foundation pit deepened - Google Patents
Support system ruggedized construction after a kind of foundation pit deepened Download PDFInfo
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Abstract
The invention discloses the support system ruggedized construction after a kind of foundation pit deepened, comprise the castinplace pile arranged around margin of foundation pit, connect castinplace pile first encloses purlin beam, be connected to first and enclose horizontal shore between purlin beam, be provided with some reinforcing piles the clear width of foundation ditch circumfusion stake, the degree of depth of reinforcing pile is greater than the degree of depth of castinplace pile, the upper end absolute altitude of reinforcing pile does not deepen the bottom surface absolute altitude of front original design higher than foundation ditch, be provided with second of reinforcement by connection stake in the lower inside of castinplace pile and enclose purlin beam, the second medial surface enclosing purlin beam between adjacent two reinforcing piles is provided with circular arc recess, reinforcing pile encloses purlin beam position near second and is provided with downward-sloping bearing diagonal beam, the lower end of bearing diagonal beam is by being connected with the base plate of foundation ditch to support mechanism.The present invention, by the reinforcing of filling with existing perfusion, when foundation pit deepened without the need to castinplace pile of again constructing, and guarantees that it has enough lateral support intensity, can reduce engineering quantity significantly simultaneously, reduces the construction cost of support system.
Description
Technical field
The present invention relates to the support technology field of foundation ditch, especially relate to the support system ruggedized construction after a kind of foundation pit deepened.
Background technology
When construction has the building of subterranean layer, first need excavation foundation ditch, and build base plate in the bottom of foundation ditch, then build corresponding subterranean layer structure.Because the degree of depth of foundation ditch has tens meters usually, thus need to carry out supporting to the sidewall of foundation ditch, common foundation pit supporting method is holed in advance around the edge of foundation ditch and form castinplace pile in a row, in the buried soil layer below foundation ditch bottom surface in bottom of castinplace pile, to make the bottom of castinplace pile have reliable lateral support.Then connect in the inner side of castinplace pile upper end and enclose purlin beam, then with horizontal shore relative for foundation ditch both sides are enclosed purlin beam to propping up, thus make the top of castinplace pile form enough lateral support.Such as, disclosed in Chinese patent literature " a kind of detachable pre-loaded support struts frame system ", notification number is CN103161168A, and it comprises one group of engineering method stake arranging around margin of foundation pit and is positioned at encloses cold beam inside engineering method stake, encloses inside cold beam and is provided with some gusseted parts; Be arranged in foundation ditch cave in corner be provided with angle to support beam, and this angle to support beam be arranged between two triangle support members of the adjacent both sides of recessed corners; One end to support beam, angle is resisted against on one of them gusseted part side, is provided with prestressing force reservation member between the other end and another gusseted part; This prestressing force reservation member comprises two support components that can mutually strut, and wherein a support component is connected on gusseted part side, another support component is connected to angle in support beam end, has at least part to be in enclosing between cold beam of relative both sides and be provided with some groups of stiffening girders to support mechanism in foundation ditch.The all mistakes of this support frame arrange angle to support beam in the corner of foundation ditch, thus form a triangular structure, can increase the structural stability of bracing frame system, be conducive to reducing costs.
The number of plies due to subterranean layer usually there will be some and changes after going into operation; when the number of plies of local substrustion increases; we correspondingly must increase the degree of depth of foundation ditch; foundation ditch digs deeply; the part that the perfusion post poured into is positioned at below foundation ditch bottom surface will become shorter; make the lateral support that the bottom of castinplace pile cannot provide enough; thus the supporting requirement of the foundation ditch after intensification cannot be met; like this; original perfusion post cannot use; need again to pour into the castinplace pile increasing the degree of depth, and then engineering quantity and construction cost are greatly increased.
Summary of the invention
After the object of the invention is to solve the foundation pit deepened existing for existing Large Foundation Pit support system, the castinplace pile of margin of foundation pit need pour into, thus increase the problem of engineering quantity and construction cost again, support system after a kind of foundation pit deepened ruggedized construction is provided, by the reinforcing of filling with existing perfusion, guarantee that it has enough lateral support intensity, engineering quantity can be reduced significantly, to reduce construction cost simultaneously.
To achieve these goals, the present invention is by the following technical solutions:
Support system ruggedized construction after a kind of foundation pit deepened, comprise the castinplace pile arranged around margin of foundation pit, be connected to first inside castinplace pile upper end and enclose purlin beam, be connected to first and enclose horizontal shore between purlin beam, be provided with some reinforcing piles the clear width of foundation ditch circumfusion stake, the degree of depth of reinforcing pile is greater than the degree of depth of castinplace pile, the upper end absolute altitude of reinforcing pile does not deepen the bottom surface absolute altitude of front original design higher than foundation ditch, be provided with second in the lower inside of castinplace pile and enclose purlin beam, the upper end and second of reinforcing pile is enclosed purlin beam and is connected, the second medial surface enclosing purlin beam between adjacent two reinforcing piles is provided with circular arc recess, reinforcing pile encloses purlin beam position near second and is provided with downward-sloping bearing diagonal beam, the lower end of bearing diagonal beam is by being connected with the base plate of foundation ditch to support mechanism.
When needs increase one deck underground building and add deep foundation ditch, we first can pour into some reinforcing piles in the inner side of castinplace pile, enclose purlin beam with second simultaneously and each reinforcing pile and castinplace pile are connected into an entirety, as a kind of supplemental support to castinplace pile bottom, play reinforcement effect.The degree of depth imbedded in soil layer due to reinforced column is greater than the degree of depth of castinplace pile, again in conjunction with the supporting role of bearing diagonal beam, can guarantee that reinforced column has enough lateral support, and the upper end absolute altitude of reinforced column only need not deepen the bottom surface absolute altitude of front original design higher than foundation ditch, therefore its length is much shorter than again pouring into new castinplace pile.Effect due to reinforcing pile is mainly to provide auxiliary lateral support to original castinplace pile bottom, and therefore the comparable castinplace pile of its quantity is a lot of less, that is, its engineering quantity and cost much lower.Lateral force after foundation pit deepened suffered by castinplace pile is delivered on reinforcing pile by the transitional function that second encloses purlin beam, thus can meet the requirement of support.Particularly, the second medial surface enclosing purlin beam between adjacent two reinforcing piles is provided with circular arc recess, thus forms multiple arch structure, on the castinplace pile that the lateral support of reinforcing pile can be delivered near reinforcing pile.Then make bearing diagonal beam have certain pretension support force to support mechanism, be conducive to the distortion avoiding reinforcing pile after lateral force.
As preferably, describedly support mechanism is comprised to the feed screw nut being fixed on bearing diagonal beam lower end, axis along bearing diagonal beam be threaded on feed screw nut to strut, and the connecting bushing be fixed on base plate, the medial surface of connecting bushing is sphere, one swivel becket fits in connecting bushing, swivel becket lateral surface is the sphere with connecting bushing medial surface adaptation, the centre of sphere of swivel becket lateral surface is positioned at the centre position of swivel becket height, thus make swivel becket be small in ends, cydariform broad in the middle, rotate Ring current distribution and be provided with polygonal hole, to the end adapter of strut in the polygonal hole of swivel becket, connecting bushing along the circumferential direction etc. is arranged with on the end face of feed screw nut the mounting groove that two width are greater than swivel becket height, described mounting groove extends along the axis of connecting bushing, the lateral surface of mounting groove is the face of cylinder, and it is tangent with the medial surface of connecting bushing.
When rotating strut, can axially move under the effect of feed screw nut to strut, thus making bearing diagonal beam produce the support force of a pretension.And swivel becket can be inserted in connecting bushing from mounting groove when mounted, swivel becket axis now and the axis perpendicular of connecting bushing, and then rotate 90 degree, swivel becket axis now and the dead in line of connecting bushing, swivel becket and connecting bushing then form mating spherical surfaces, thus swivel becket can be avoided to deviate from from connecting bushing.Now rotate strut, make progressively to enter in the polygonal hole of swivel becket the upper end of strut, to transmit the end thrust to strut.Because the fitting face of swivel becket and connecting bushing is sphere, thus swivel becket can do 360 degree of rotations in connecting bushing, and then make to form 360 degree being rotationally connected to the upper end of strut by swivel becket and connecting bushing, like this, even if to having a small angle between strut and the axis of connecting bushing, still can guarantee can along the extruding thrust of its transfers to bearing diagonal beam to strut, be conducive to the required precision at the angle of inclination reducing bearing diagonal beam, guarantee that the stressed of bearing diagonal beam is axially loaded, bearing diagonal beam is avoided to be subject to the impact of lateral force, and the stress surface between swivel becket and connecting bushing is sphere, thus compressive strength can be improved significantly, increase the service life.
As preferably, the lateral surface of described swivel becket is provided with some oil storage tanks extended along warp direction, and described oil storage tank is uniformly distributed at the circumferencial direction of swivel becket.
Lubricant grease can be stored, to provide good lubricant effect for the rotation of swivel becket in oil storage tank.Particularly, swivel becket is that circumferentially direction is rotated substantially, therefore, the oil storage tank radially extended is substantially vertical with rotation direction, like this, the lubricant grease of swivel becket when rotating in oil storage tank is not easily extruded oil storage tank, and is conducive to the whole medial surface that lubricant grease lubricates connecting bushing equably.
As preferably, the base plate of foundation ditch is provided with the bracing frame of steel work, and support frame as described above adopts the triangular prism structure of traverse, and it has a bearing diagonal face towards reinforcing pile, and described connecting bushing is fixed on the bearing diagonal face of bracing frame.
Leg-of-mutton bracing frame is convenient to the connection to support mechanism and base plate, has good structural stability simultaneously, and bracing frame adopts steel work, facilitates the dismounting in later stage.
As preferably, the construction sequence of described bearing diagonal beam is as follows:
A. after setting first and enclosing purlin beam and horizontal shore, excavate the earthwork in foundation ditch, until arrive foundation ditch not deepen front original projected depth, inside castinplace pile, then arrange second enclose purlin beam;
B. desired depth after the centre position of foundation ditch continues to excavate the earthwork to foundation pit deepened, and prefabricated panel is built bottom it, thus form a circle support cob wall at the periphery of foundation ditch;
C. excavate groove one by one in the position supporting corresponding reinforcing pile on cob wall, and the bearing diagonal beam be connected between reinforcing pile and prefabricated panel is set seriatim in groove;
D. on each bearing diagonal beam of synchronous adjustment to support mechanism, make each bearing diagonal beam form identical pretension support force;
E. the support cob wall in foundation ditch is excavated, and the telescopic backboard be connected with prefabricated panel is built in the position bottom foundation ditch between prefabricated panel and castinplace pile, telescopic backboard and prefabricated panel form complete base plate of foundation pit, and castinplace pile now and reinforcing pile and base plate are consolidated into one.
In order to ensure the support action to foundation ditch, the present invention adopts the method for fractional steps when excavating foundation ditch, and first dug by foundation ditch to not deepening front original projected depth, now, original castinplace pile still has enough support forces, thus can arrange second easily and enclose purlin beam.Then excavate the earthwork in the middle of foundation ditch and build prefabricated panel, thus forming a circle support cob wall at foundation ditch periphery, making the bottom of castinplace pile continue to be able to effective supporting.Bearing diagonal beam then can be connected on prefabricated panel, makes bearing diagonal beam form enough support forces.Like this, after the earthwork in foundation ditch has all been excavated, the supporting still remained valid in the castinplace pile bottom of foundation ditch.And after completing the building of whole base plate, castinplace pile and reinforcing pile and base plate are consolidated into one, base plate now can form reliable lateral support to castinplace pile and reinforcing pile.
Therefore, the present invention has following beneficial effect: by the reinforcing of filling with existing perfusion, when foundation pit deepened without the need to castinplace pile of again constructing, and guarantee that it has enough lateral support intensity, engineering quantity can be reduced significantly simultaneously, reduce the construction cost of support system.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is A-A partial sectional view in Fig. 1.
Fig. 3 is the decomposition texture schematic diagram to support mechanism in the present invention.
Fig. 4 is the sectional view to support mechanism in the present invention.
In figure: 1, castinplace pile 2, first enclose purlin beam 3, second enclose purlin beam 31, circular arc recess 4, horizontal shore 5, reinforcing pile 51, connection bracket 6, to support mechanism 61, feed screw nut 611, flange 62, to strut 621, linkage section 622, thread segment 623, convex shoulder 63, connecting bushing 631, mounting groove 64, swivel becket 641, oil storage tank 7, bearing diagonal beam 8, bracing frame 81, bearing diagonal face 9, base plate.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention will be further described.
As shown in Figure 1 and Figure 2, support system ruggedized construction after a kind of foundation pit deepened, the shape of foundation ditch is roughly rectangle, reinforcing to foundation pit support system when it is applicable to need the situation increasing B1 when not yet excavating in the face of foundation ditch, comprise the castinplace pile 1 arranged around margin of foundation pit, castinplace pile can be formed by concrete perfusion after boring, or adopts the prior aries such as SMW engineering method stake to complete.In addition, inside castinplace pile upper end, arrange level first encloses purlin beam 2, to be linked into an integrated entity by each castinplace pile.Then enclose between purlin beam in first of the longer relative both sides of foundation ditch and connect horizontal shore 4, the steel structure girder that horizontal shore can be reinforced concrete beam or form with the shaped steel such as i iron, H profile steel.Certainly, the degree of depth of castinplace pile is wherein according to original foundation depth design perfusion, and the degree of depth that foundation ditch needs increase is roughly equivalent to the height of the B1 building newly increased, as what it will be appreciated by those skilled in the art that be, the degree of depth below foundation ditch bottom surface before castinplace pile is embedded in and does not deepen is greater than the height of B1 building, that is, when foundation ditch digs deeply, although castinplace pile can not meet the supporting requirement of the foundation ditch after intensification, its lower end is still imbedded in the soil layer of below the foundation ditch bottom surface after intensification.
Reliable supporting can be obtained to make the foundation ditch after intensification, we can arrange some reinforcing piles 5 at the clear width of foundation ditch circumfusion stake, the degree of depth of reinforcing pile is greater than the degree of depth of castinplace pile, specifically can determine according to the depth value of castinplace pile required after foundation pit deepened, certainly, reinforcing pile needs to be formed by also concrete perfusion of holing after determining to deepen foundation depth.In addition, also need arrange second in the lower inside of castinplace pile and enclose purlin beam 3, the upper end and second of reinforcing pile is enclosed purlin beam and is connected.Second encloses purlin beam preferably can adopt reinforced concrete beam, so that join together with castinplace pile, reinforcing pile.The upper end absolute altitude of reinforcing pile need not deepen the bottom surface absolute altitude of front original design higher than foundation ditch, like this, second encloses purlin deck-molding does not deepen front original design bottom surface absolute altitude in foundation ditch, thus excavate to original projected depth at foundation ditch---when namely castinplace pile still has enough lateral support, the construction that second encloses purlin beam can be started.In addition, we need the second medial surface enclosing purlin beam between adjacent two reinforcing piles to arrange circular arc recess 31, on reinforcing pile, enclose purlin beam position near second simultaneously and downward-sloping bearing diagonal beam 7 is set, the lower end of bearing diagonal beam is by being connected with the base plate 9 of foundation ditch to support mechanism 6, thus make reinforcing pile, bearing diagonal beam forms a triangular support, second encloses purlin beam then forms a multiple arch structure, both weight reduction was conducive to, guarantee that it has enough compressive strengths simultaneously, make the support force of bearing diagonal beam enclose purlin beam by second and be delivered on castinplace pile.Bearing diagonal beam preferably adopts the steel structure girder be made up of the shaped steel such as i iron, H profile steel, so that recycling.
Conveniently bearing diagonal beam setting be connected, we can arrange the bracing frame 8 of steel work on the base plate of foundation ditch, bracing frame can adopt the triangular prism structure of traverse, one of them side is connected with base plate of foundation pit, another side towards reinforcing pile then forms bearing diagonal face 81, for the connection to support mechanism, the 3rd side then forms support reliably to bearing diagonal face.Be understandable that, bearing diagonal face should keep vertical with bearing diagonal beam as far as possible, and the side be connected with base plate preferably can be threaded connection with some connecting studs, connecting stud is connected with the reinforcing bar in base plate, and be cast in the concrete of base plate, thus make bracing frame and base plate form firm removably connecting, so that the later stage removes bracing frame easily.Similarly, we also can arrange corresponding connection bracket 51 on reinforcing pile, and this connection bracket can be enclosed purlin beam and builds integral with second.
As shown in Figure 3, Figure 4, of the present invention to support mechanism 6 comprise be fixed on bearing diagonal beam lower end feed screw nut 61, along the axis of bearing diagonal beam be threaded on feed screw nut to strut 62 and the connecting bushing 63 that is fixed on the bearing diagonal face of bracing frame, it is the thread segment 622 be connected with feed screw nut to one end of strut, the other end is then linkage section 621, by forward and reverse rotation to strut, can make to retreat mobile at axis direction to strut.For the ease of the connection of feed screw nut and bearing diagonal beam, we can arrange one block of shrouding at the steel structure column end winding support of bearing diagonal beam, be connected one end feed screw nut with bearing diagonal beam simultaneously and the radial flange 611 extended integratedly is set, flange is arranged corresponding through hole, feed screw nut is fixed on shrouding by bolt, certainly, shrouding should arrange corresponding through hole in the screwed hole position of corresponding feed screw nut, can pass from through hole strut.The medial surface of connecting bushing is sphere, there is in connecting bushing a rotating swivel becket 64, swivel becket lateral surface is the sphere with connecting bushing medial surface adaptation, outside swivel becket, the centre of sphere of sphere is positioned at the centre position of swivel becket height, thus make swivel becket be cydariform small in ends, broad in the middle, rotate Ring current distribution and be provided with axial regular hexagon hole, correspondingly, be regular hexagon to the cross section of the linkage section of strut epimere, this linkage section fits in the regular hexagon hole at swivel becket center.
For the ease of the installation of swivel becket, we to need on connecting bushing on the end face of feed screw nut along the circumferential direction decile to arrange the mounting groove 631 that two width are greater than swivel becket height, now two mounting grooves are located opposite from the radial direction of connecting bushing, the lateral surface of this mounting groove is the face of cylinder, and the diameter on the face of cylinder equals the diameter of sphere inside connecting bushing, the inner side of mounting groove then with connecting bushing inside sphere through, mounting groove extends internally along the axis of connecting bushing, until the lateral surface of mounting groove and the medial surface of connecting bushing tangent.Like this, connecting bushing can first be fixed on the bearing diagonal face of bracing frame by we, is then inserted in connecting bushing by swivel becket from mounting groove, swivel becket axis now and the axis perpendicular of connecting bushing.When the inner side sphere of bottom and connecting bushing that swivel becket is inserted into mounting groove is fitted, swivel becket is rotated 90 degree, make swivel becket and connecting bushing form mating spherical surfaces, swivel becket axis now and the dead in line of connecting bushing, thus swivel becket can be avoided to deviate from from connecting bushing.Then be inserted into the linkage section of strut in the regular hexagon hole at swivel becket center, and feed screw nut be fixed on the shrouding of auxiliary bearing diagonal beam.Then rotate and make it stretch out from feed screw nut to strut, the linkage section of strut is then progressively entered in the polygonal hole of swivel becket, to transmit the end thrust to strut.Certainly, in rotation, to during strut, we also can adopt torque wrench, so that for all bearing diagonal beam sets identical moment of torsion to strut, to guarantee that each bearing diagonal beam produces roughly the same pretension support force.In addition, we also need arranging an orthohexagonal convex shoulder 623 to the linkage section of strut and thread segment junction, rotate strut, form an axially mounting to swivel becket simultaneously to facilitate.In addition, we can arrange some oil storage tanks 641 extended along warp direction on the lateral surface of swivel becket, each oil storage tank is uniformly distributed at the circumferencial direction of swivel becket, like this, when swivel becket rotates, lubricant grease in oil storage tank can be uniformly applied on the inner side sphere of connecting bushing, thus effectively reduces frictional resistance when swivel becket rotates.
Be able to effective supporting in order to ensure the sidewall of foundation ditch when arranging bearing diagonal beam, bearing diagonal beam of the present invention can carry out in accordance with the following steps when constructing:
A. after setting first and enclosing purlin beam and horizontal shore, excavate the earthwork in foundation ditch, until arrive foundation ditch not deepen front original projected depth, castinplace pile now still has enough support forces, and reinforcing pile then exposes soil layer.Then arrange inside castinplace pile and connect second of castinplace pile and reinforcing pile and enclose purlin beam, reinforcing pile and second encloses purlin beam to be played auxiliary to foundation pit side-wall and reinforces the effect supported.It should be noted that, before arranging first and enclosing purlin beam and horizontal shore, we need the earthwork of suitably excavating in foundation ditch, so that the construction that first encloses purlin beam and horizontal shore.Reinforcing pile then needs the inner side being poured in the stake of foundation ditch circumfusion before excavation of foundation pit in advance as castinplace pile.
B. continue in the centre position of foundation ditch to excavate desired depth after the earthwork to foundation pit deepened, and bottom it prefabricated panel of pouring reinforcement concrete structure, thus form a circle at the periphery of foundation ditch and support cob wall.Owing to supporting cob wall, there is enough thickness, therefore can form strong support to the bottom of foundation pit side-wall, then enclose the supporting role of purlin beam in conjunction with reinforcing pile and second, make the bottom of foundation pit side-wall have reliable support;
C. excavate groove one by one in the position supporting corresponding reinforcing pile on cob wall, and in groove, arrange the bearing diagonal beam be connected between reinforcing pile and prefabricated panel according to aforesaid method seriatim, bracing frame wherein can be built integral with prefabricated panel;
D. on each bearing diagonal beam of synchronous adjustment to support mechanism, make each bearing diagonal beam form identical pretension support force.The prefabricated panel of reinforced concrete structure is as a part for base plate of foundation pit, and it has extremely strong compressive resistance, therefore can guarantee that bearing diagonal beam can form strong support to foundation pit side-wall;
E. the support soil layer in foundation ditch is excavated, and the telescopic backboard be connected with prefabricated panel is built in the position bottom foundation ditch between prefabricated panel and castinplace pile, telescopic backboard and prefabricated panel form complete base plate of foundation pit, castinplace pile now and reinforcing pile and base plate are consolidated into one, thus make the bottom of castinplace pile and reinforcing pile obtain effective fixed support, and then whole support system is made to be able to reliable reinforcing.
Claims (3)
1. the support system ruggedized construction after a foundation pit deepened, comprise and arranging and the castinplace pile formed by concrete perfusion around margin of foundation pit, be connected to first inside castinplace pile upper end and enclose purlin beam, be connected to first and enclose horizontal shore between purlin beam, it is characterized in that, be provided with some reinforcing piles formed by concrete perfusion the clear width of foundation ditch circumfusion stake, the degree of depth of reinforcing pile is greater than the degree of depth of castinplace pile, the upper end absolute altitude of reinforcing pile does not deepen the bottom surface absolute altitude of front original design higher than foundation ditch, be provided with second in the lower inside of castinplace pile and enclose purlin beam, described second encloses purlin beam adopts reinforced concrete beam, the upper end and second of reinforcing pile is enclosed purlin beam and is connected, the second medial surface enclosing purlin beam between adjacent two reinforcing piles is provided with circular arc recess, reinforcing pile encloses purlin beam position near second and is provided with downward-sloping bearing diagonal beam, the lower end of bearing diagonal beam is by being connected with the base plate of foundation ditch to support mechanism, the construction sequence of described bearing diagonal beam is as follows:
A. after setting first and enclosing purlin beam and horizontal shore, excavate the earthwork in foundation ditch, until arrive foundation ditch not deepen front original projected depth, inside castinplace pile, then arrange second enclose purlin beam;
B. desired depth after the centre position of foundation ditch continues to excavate the earthwork to foundation pit deepened, and prefabricated panel is built bottom it, thus form a circle support cob wall at the periphery of foundation ditch;
C. excavate groove one by one in the position supporting corresponding reinforcing pile on cob wall, and the bearing diagonal beam be connected between reinforcing pile and prefabricated panel is set seriatim in groove;
D. on each bearing diagonal beam of synchronous adjustment to support mechanism, make each bearing diagonal beam form identical pretension support force;
E. the support cob wall in foundation ditch is excavated, and the telescopic backboard be connected with prefabricated panel is built in the position bottom foundation ditch between prefabricated panel and castinplace pile, telescopic backboard and prefabricated panel form complete base plate of foundation pit, and castinplace pile now and reinforcing pile and base plate are consolidated into one.
2. the support system ruggedized construction after a kind of foundation pit deepened according to claim 1, it is characterized in that, describedly support mechanism is comprised to the feed screw nut being fixed on bearing diagonal beam lower end, axis along bearing diagonal beam be threaded on feed screw nut to strut, and the connecting bushing be fixed on base plate, the medial surface of connecting bushing is sphere, one swivel becket fits in connecting bushing, swivel becket lateral surface is the sphere with connecting bushing medial surface adaptation, the centre of sphere of swivel becket lateral surface is positioned at the centre position of swivel becket height, thus make swivel becket be small in ends, cydariform broad in the middle, rotate Ring current distribution and be provided with polygonal hole, to the end adapter of strut in the polygonal hole of swivel becket, connecting bushing along the circumferential direction etc. is arranged with on the end face of feed screw nut the mounting groove that two width are greater than swivel becket height, described mounting groove extends along the axis of connecting bushing, the lateral surface of mounting groove is the face of cylinder, and it is tangent with the medial surface of connecting bushing.
3. the support system ruggedized construction after a kind of foundation pit deepened according to claim 2, it is characterized in that, the base plate of foundation ditch is provided with the bracing frame of steel work, support frame as described above adopts the triangular prism structure of traverse, it has a bearing diagonal face towards reinforcing pile, and described connecting bushing is fixed on the bearing diagonal face of bracing frame.
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Families Citing this family (15)
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| CN105178327A (en) * | 2015-07-17 | 2015-12-23 | 上海建工七建集团有限公司 | Composite retaining structure of foundation pit project and construction method thereof |
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| CN107761742A (en) * | 2017-10-23 | 2018-03-06 | 上海市城市建设设计研究总院（集团）有限公司 | Along depth direction is multi-form, variable cross-section supporting construction and its construction method |
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| CN110685284B (en) * | 2019-10-08 | 2021-01-29 | 广东乾兴建设工程有限公司 | Construction method of foundation pit |
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| CN112323818B (en) * | 2020-11-25 | 2022-05-03 | 成都城投建筑工程有限公司 | Soil nailing wall supporting construction |
| CN113106981A (en) * | 2021-03-31 | 2021-07-13 | 河南省远基岩土工程有限公司 | Foundation pit deepening reinforcement support body |
| CN113235615A (en) * | 2021-05-27 | 2021-08-10 | 中交投资咨询(北京)有限公司 | Deep foundation pit reinforcing device and construction method thereof |
| CN114059554B (en) * | 2021-12-09 | 2022-11-25 | 深圳市基础工程有限公司 | Deep foundation pit inner support system with steel truss and inclined cast support and construction method |
| CN114263187B (en) * | 2021-12-30 | 2023-07-21 | 三箭建设工程集团有限公司 | Foundation pit bottom plate force transmission structure and construction method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180119A (en) * | 1996-09-24 | 1998-04-29 | 孙洪涛 | Reinforced support method |
| JP3716973B2 (en) * | 2000-07-06 | 2005-11-16 | 日本軽金属株式会社 | Angry material |
| CN2835351Y (en) * | 2005-10-14 | 2006-11-08 | 浙江中成建工集团有限公司 | Horizontal supporting structure for reinforced concrete loop truss in deep foundation pit |
| CN101892667B (en) * | 2010-07-23 | 2011-12-21 | 中国建筑第二工程局有限公司 | Foundation pit support device and construction method |
| CN203866844U (en) * | 2014-04-01 | 2014-10-08 | 浙江省建筑设计研究院 | Supporting system reinforcing structure for deepened foundation pit |
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