CN204059365U - A kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means - Google Patents
A kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means Download PDFInfo
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- CN204059365U CN204059365U CN201420445652.1U CN201420445652U CN204059365U CN 204059365 U CN204059365 U CN 204059365U CN 201420445652 U CN201420445652 U CN 201420445652U CN 204059365 U CN204059365 U CN 204059365U
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Abstract
The utility model relates to a kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means, comprise the Prestressed anchor rope with pressure dispersing be anchored in rock mass and the steel waist rail be arranged on deep foundation pit slope slide plane, the outer end of described prestress anchorage cable is fixed on steel waist rail, described steel waist rail comprises two channel-section steels be oppositely arranged of horizontal expansion, the outer end of prestress anchorage cable is through channel-section steel, channel-section steel is arranged steel floor, the position that the outer end of the steel strand of prestress anchorage cable and steel waist rail fix arranges anchor boots.This technology adopts Prestressed anchor rope with pressure dispersing and steel waist rail to combine the reinforcing carrying out deep foundation ditch, the strong displacement limiting deep foundation pit slope, that be applicable to carry out vertical cut and the reinforcing of the deep foundation ditch temporary lining engineering that excavation height is larger, be specially adapted to be located in complicated geological or end bearing capacity of foundation soil deficiency, the deep foundation ditch strengthening construction that end anchorage section stress must not too be concentrated.
Description
Technical field
The utility model relates to technical field of building construction.
Background technology
Deep-foundation pit engineering belongs to dangerous larger engineering; once there is cave-in accident will cause extremely serious social negative effect; very big destruction is caused to neighboring buildings and environment; and often can cause casualties and property loss; therefore once occur that dangerous or monitored data reaches alarm condition, the reinforcement for rushing danger construction of deep foundation ditch must be completed quickly and efficiently.
Utility model content
The technical problems to be solved in the utility model is to provide one can control Rock And Soil distortion, and adjustment Rock And Soil stress state, improves the dispersion-type prestressed anchorage cable bracing means of the stability deep foundation ditch pressure of Rock And Soil.
For solving the problems of the technologies described above, deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means of the present utility model, comprise the Prestressed anchor rope with pressure dispersing be anchored in rock mass and the steel waist rail be arranged on deep foundation pit slope slide plane, the outer end of described prestress anchorage cable is fixed on steel waist rail, described steel waist rail comprises two channel-section steels be oppositely arranged of horizontal expansion, the outer end of prestress anchorage cable is through channel-section steel, channel-section steel is arranged steel floor, the position that the outer end of the steel strand of prestress anchorage cable and steel waist rail fix arranges anchor boots.
In this reinforcement system, steel waist rail bearing structure mainly bears the power being delivered to surface layer by the lateral pressure of potential slide mass, it is also Force transmission parts simultaneously the power be subject to be passed to anchor cable again, the prestressing force that ground tackle applies in advance is passed to dispersedly on a protection slab, be divided into horizontal force and vertical force, concentrated force is become dispersion force.Path of Force Transfer: ground tackle → bearing plate → stirrup strap → steel waist rail → surface layer.
Ground tackle is to anchor cable Shi Hanzhang, the key position realizing anchoring, is used for prestressing force to be delivered to bearing plate from presstressed reinforcing steel; Again power is delivered on stirrup strap by the expansion effect of bearing plate; By the conversion of stirrup strap, vertical for power is delivered on surface layer.
Further, described channel-section steel and deep foundation pit slope slide plane arrange billet, anchor boots and channel-section steel contact position arrange billet, the steel strand of prestress anchorage cable billet is set with anchor boots contact position.
This technology adopts Prestressed anchor rope with pressure dispersing and steel waist rail to combine the reinforcing carrying out deep foundation ditch, the strong displacement limiting deep foundation pit slope, that be applicable to carry out vertical cut and the reinforcing of the deep foundation ditch temporary lining engineering that excavation height is larger, be specially adapted to be located in complicated geological (there is extremely broken structurally fractured zone, lamprophyre layer in rock stratum) or end bearing capacity of foundation soil deficiency, the deep foundation ditch strengthening construction that end anchorage section stress must not too be concentrated.Adopt the support system of Prestressed anchor rope with pressure dispersing+steel waist rail, the difficulty such as overcome complicated geological Lack of support, anchor cable end stress is concentrated.
The three-dimensional stress state that the prestressing force of anchor cable makes unstable rock mass be in, rock mass strength and deformation ratio good many under uniaxial tension and low confined pressure condition, ACTIVE CONTROL Rock And Soil is out of shape, and significantly improves the globality of rock mass, directly changes the stress state on slide plane and sliding stability condition; Prestressed anchor rope with pressure dispersing has given full play to the compressive property of anchoring section anchoring body simultaneously, has good consolidation effect for structure crushable layer, this complicated geological of lamprophyre layer.
This reinforcement system carries out consolidation process on the basis of original system of deep foundation pit support, and reinforcement system and support system organically combine, and forms an entirety, shared stress.This patent adopts Prestressed anchor rope with pressure dispersing in conjunction with the reinforcement system of steel waist rail, the reinforcement system formed both it can carry out deep foundation ditch Rock And Soil deep-layer reinforcing, can be out of shape by ACTIVE CONTROL Rock And Soil, adjustment Rock And Soil stress state, is conducive to the stability of Rock And Soil simultaneously.
Compared to prior art, this technology has following beneficial effect:
1, economic aspect: the construction of this technology is simple, and progress is fast, highly shortened the engineering time, adopts this kind of reinforcement means than expecting that reinforcing the duration is advanced by 25 days, effectively saves the duration, meets requirement of speedily carrying out rescue work.
2, social aspect: jointly check and accept through construction, design, monitoring, management, unit in charge of construction, unanimously think that this its support reinforcement system reaches Expected Results, meet design and operational requirement, consolidation effect is excellent.
3, secure context: this technology passes through mound back-pressure in reinforcing early stage, controls foundation ditch danger and expands further, carry out consolidation process simultaneously, make full use of the supporting effect of original support system on the basis of original support system.
4, quality aspect: this technology, by controlling the details of Prestressed anchor rope with pressure dispersing, steel waist rail, efficiently solves the quality problems causing massif that the major safety risks such as larger displacement or landslide occur again, significantly enhances massif supporting effect.
5, technical elements: this technology, by Prestressed anchor rope with pressure dispersing and strong the combining of steel waist rail, can be carried out deep-layer reinforcing, successfully cross the theoretical plane of disruption, ACTIVE CONTROL Rock And Soil is out of shape, and overcomes the drawback that anchoring section stress is too concentrated.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means of the present utility model.
Fig. 2 is the structural representation of steel waist rail.
Fig. 3 be in Fig. 2 steel waist rail part along the sectional view of A-A line.
Fig. 4 is the top view of steel waist rail in Fig. 3.
Detailed description of the invention
As shown in Figures 1 to 4, deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means of the present utility model, comprise the Prestressed anchor rope with pressure dispersing 2 be anchored in rock mass 1 and the steel waist rail 3 be arranged on deep foundation pit slope slide plane 8, the outer end of prestress anchorage cable 2 is fixed on steel waist rail 3, steel waist rail 3 comprises two 20# channel-section steels 4 be oppositely arranged of horizontal expansion, the outer end of prestress anchorage cable 2, through channel-section steel 3, the both sides of channel-section steel 3 all arranges steel floor 5.The position that the outer end of the steel strand of prestress anchorage cable 2 and steel waist rail 3 fix arranges anchor boots 6.Channel-section steel 4 with on deep foundation pit slope slide plane, the steel strand of anchor boots 6 and channel-section steel 4 contact position, prestress anchorage cable 2 billet 7 is set with anchor boots 6 contact position.
Technological process: mound forms mechanical working platform → boring, clear hole → anchor cable making, installation → slip casting → make, lays steel waist rail → anchorage cable stretching and lock anchor head → Real-Time Monitoring → mound working platform earthwork removal.
In this reinforcement system, through the prestress anchorage cable of deep foundation pit slope slide plane, outer end is fixed on steel waist rail, the other end is anchored in Rock And Soil, by " tensioning equipment " to its Shi Hanzhang, make the three-dimensional stress state that unstable rock mass is in, ACTIVE CONTROL Rock And Soil is out of shape, significantly improve the globality of rock mass, directly change the stress state on slide plane and sliding stability condition; Steel waist rail bearing structure must have corresponding intensity, rigidity, stability, meet prestress anchorage cable shift to an earlier date the requirement of Shi Hanzhang and Rock And Soil lateral pressure, mainly bear the power being delivered to surface layer by the lateral pressure of potential slide mass, then the power be subject to is passed to anchor cable.
Prestressed anchor rope with pressure dispersing has given full play to the compressive property of anchoring section anchoring body, overcomes the drawback that anchoring section stress is too concentrated, and has good consolidation effect for structure crushable layer, this complicated geological of lamprophyre layer.
Prestressed anchor rope with pressure dispersing is a kind of compression member being installed in depths, rock stratum, its one end links with engineering structure or soil blocking pile wall, the other end is anchored in the rock-soil layer of massif by the ground tackle of anchoring section diverse location, in advance to its Shi Hanzhang, to bear the lateral pressure of the uplift force of works, pulling capacity, canting power or soil blocking pile wall, effectively bear structural loads, prevent malformation, overcome the drawback that anchoring section stress is too concentrated, thus enclosed structure thing is stable.
Pre-firmly anchor cable mainly adopts the compositions such as the muscle materials such as steel strand, anchoring section ground tackle and wedge-lock stator, Grouting Pipe, guiding cap.Carry out slip casing by pressure and secondary grouting to anchor cable, improve mechanical property and the shear strength of original position rock mass, also increase anchoring body and rock mass friction factor, the uplift resistance of the anchor cable made is increased exponentially.
The above, only to preferred embodiment of the present utility model, not do other forms of restriction to the utility model, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equal change.
Claims (2)
1. a deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means, it is characterized in that: comprise the Prestressed anchor rope with pressure dispersing be anchored in rock mass and the steel waist rail be arranged on deep foundation pit slope slide plane, the outer end of described prestress anchorage cable is fixed on steel waist rail, described steel waist rail comprises two channel-section steels be oppositely arranged of horizontal expansion, the outer end of prestress anchorage cable is through channel-section steel, channel-section steel is arranged steel floor, the position that the outer end of the steel strand of prestress anchorage cable and steel waist rail fix arranges anchor boots.
2. according to deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means according to claim 1, it is characterized in that: described channel-section steel and deep foundation pit slope slide plane arrange billet, anchor boots and channel-section steel contact position arrange billet, the steel strand of prestress anchorage cable billet is set with anchor boots contact position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445652.1U CN204059365U (en) | 2014-08-07 | 2014-08-07 | A kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445652.1U CN204059365U (en) | 2014-08-07 | 2014-08-07 | A kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means |
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| Publication Number | Publication Date |
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| CN204059365U true CN204059365U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420445652.1U Expired - Fee Related CN204059365U (en) | 2014-08-07 | 2014-08-07 | A kind of deep foundation ditch Prestressed anchor rope with pressure dispersing bracing means |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513996A (en) * | 2017-10-20 | 2017-12-26 | 上海智平基础工程有限公司 | A kind of anchorage and its construction method of recoverable prestressed anchor cable |
| CN107604927A (en) * | 2017-09-30 | 2018-01-19 | 青岛理工大学 | Composite pile anchor supporting device |
| CN107604926A (en) * | 2017-09-30 | 2018-01-19 | 青岛理工大学 | Composite pile anchor supporting method |
| CN108222014A (en) * | 2018-01-17 | 2018-06-29 | 启东市建筑设计院有限公司 | A kind of rock bolt device and the foundation pit supporting construction with the device |
| CN108797598A (en) * | 2018-07-09 | 2018-11-13 | 江苏地基工程有限公司 | The construction technology of pre-loaded support struts in a kind of deep basal pit |
-
2014
- 2014-08-07 CN CN201420445652.1U patent/CN204059365U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604927A (en) * | 2017-09-30 | 2018-01-19 | 青岛理工大学 | Composite pile anchor supporting device |
| CN107604926A (en) * | 2017-09-30 | 2018-01-19 | 青岛理工大学 | Composite pile anchor supporting method |
| CN107513996A (en) * | 2017-10-20 | 2017-12-26 | 上海智平基础工程有限公司 | A kind of anchorage and its construction method of recoverable prestressed anchor cable |
| CN108222014A (en) * | 2018-01-17 | 2018-06-29 | 启东市建筑设计院有限公司 | A kind of rock bolt device and the foundation pit supporting construction with the device |
| CN108222014B (en) * | 2018-01-17 | 2019-10-25 | 启东市建筑设计院有限公司 | A kind of rock bolt device and the foundation pit supporting construction with the device |
| CN108797598A (en) * | 2018-07-09 | 2018-11-13 | 江苏地基工程有限公司 | The construction technology of pre-loaded support struts in a kind of deep basal pit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170807 |
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| CF01 | Termination of patent right due to non-payment of annual fee |