CN102304927B - Prestress anchor cable buttress-type parapet suitable for rock substrate - Google Patents
Prestress anchor cable buttress-type parapet suitable for rock substrate Download PDFInfo
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- CN102304927B CN102304927B CN 201110189482 CN201110189482A CN102304927B CN 102304927 B CN102304927 B CN 102304927B CN 201110189482 CN201110189482 CN 201110189482 CN 201110189482 A CN201110189482 A CN 201110189482A CN 102304927 B CN102304927 B CN 102304927B
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- barricade
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- anchorage cable
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Abstract
The invention discloses a prestress anchor cable buttress-type parapet suitable for a rock substrate, comprising a parapet base, a parapet panel and a buttress plate, wherein the parapet panel and the buttress plate are arranged on the parapet base; the buttress plate is arranged on the inner side of the parapet panel; an inclined duct is arranged in the buttress plate; the steel strand of the prestress anchor cable passes through a PVC (Polyvinyl Chloride) pipe in the inclined duct; an included angle between the inclined duct and a horizontal plane is 15-45 degrees; one end of the steel strand is connected with the anchor head of the prestress anchor cable on the outer side of the parapet panel; the anchor head is fixed on the outer side of the parapet panel by an anchor head mad pillar;and the other end of an anchor cable steel strand extends into a rock foundation drilling hole below the rear side of a parapet heel slab. In the prestress anchor cable buttress-type parapet, the prestress anchor cable is effectively combined with the buttress-type parapet, and the prestress anchor cable built in the buttress plate can be used for increasing the strength of the buttress plate. Inaddition, the parapet base, the parapet panel, the parapet plate and the rock substrate are tightly combined, and the limit skidding resistance force and topple resistance performance of the buttress-type parapet are improved.
Description
Technical field
The present invention relates to the embankment protection wall-retaining structure of rock foundation.
Background technology
At present, counterfort wall has been widely used in engineerings such as fills embankment reinforcing and the reinforcing of embankment building lot.Counterfort wall is reinforced concrete structure, mainly the soil pressure that relies on the frictional resistance between barricade basis and the ground to come the balance barricade to banket and bear at barricade panel dorsal part because of the inboard.
Fig. 1 shows the basic structure of existing counterfort wall, comprises barricade basis 1, barricade panel 2 and counterfort plate 5.Barricade basis 1 is the level board shape, and barricade panel 2 and counterfort plate 5 place on the barricade basis 1, and barricade panel 2 is perpendicular to barricade basis 1, and rectangular leg-of-mutton counterfort plate 5 places the inboard of barricade panel 2.The part that barricade basis 1 is positioned at barricade panel 2 outsides is called barricade toe board 3, and the part that is positioned at barricade panel 2 inboards is called barricade heel slab 4.Counterfort plate 5 connects barricade panel 2 and barricade heel slab 4.For general counterfort wall structure, polylith counterfort plate need be set according to the length of barricade, make counterfort wall play the effect of the inboard fills embankment of reinforced retaining wall panel and embankment building lot.
When above-mentioned counterfort wall was applied in the rock foundation engineering, the general step of construction was as follows:
1. the design attitude on barricade basis 1 excavates rock foundation, the reinforcing cage of colligation barricade basis 1, barricade panel 2 and counterfort plate 5, and the template that barricade basis 1, barricade panel 2 and counterfort plate 5 are installed;
2. pour into a mould the concrete on barricade basis 1, subsequently fluid concrete in the template of barricade panel 2 and counterfort plate 5;
3. treat the counterfort wall concrete strength reach design strength 70% after, the backfill earthwork is carried out in barricade panel 2 inboards, and layering is tamped.
The counterfort wall of above-mentioned prior art also exposes some problems gradually when being widely used in reinforcing fills embankment and embankment building lot.Mainly show as: counterfort wall mainly is that the deadweight that relies on a part of backfill soil body of barricade heel slab top to produce increases the limit frictional resistance between counterfort wall basis and the ground, when the counterfort wall height is big, the big soil pressure that barricade panel dorsal part is produced for the balance backfill soil body, needed barricade heel slab design length is longer, the counterfort plate that connects barricade panel and barricade heel slab also constantly thickens, and the reinforcing bar quantity of reinforcement of counterfort plate also increases greatly.Therefore, when design counterfort wall height was higher, its construction costs increasing degree was bigger.For a long time, part engineers and technicians attempt counterfort wall is improved, and be included in below, barricade basis and set up tenon, counter-slope etc., the length that also has the scholar to propose to prolong the barricade heel slab, and apply prestress anchorage cable in barricade heel slab vertical direction.And regrettably, above-mentioned measure is not remarkable in the effect that plays aspect raising counterfort wall limit skid resistance, overturning or slip resistance analysis performance and the counterfort plate intensity.
Summary of the invention
The problem that exists at the counterfort wall of prior art, the present invention releases a kind of prestress anchorage cable counterfort wall, effectively the prestressed anchor Cable Structure is combined with the counterfort wall structure, utilize the intensity of the prestress anchorage cable enhancement counterfort plate that arranges in the counterfort plate, and by prestress anchorage cable with barricade basis, barricade panel, counterfort plate with rock foundation is tightr connects, improve counterfort wall limit skid resistance and overturning or slip resistance analysis performance.
Prestress anchorage cable counterfort wall involved in the present invention comprises barricade basis, barricade panel, counterfort plate and prestress anchorage cable.The barricade basis is the level board shape, and barricade panel and counterfort plate place on the barricade basis, and the barricade panel is perpendicular to the barricade basis, and rectangular leg-of-mutton counterfort plate places the inboard of barricade panel.The barricade panel is divided into the barricade basis barricade toe board and the inboard barricade heel slab in the outside.The counterfort plate connects barricade panel and barricade heel slab.There is an oblique duct inside of counterfort plate, and the angle between oblique duct and the horizontal plane is 15 °～45 °, and oblique duct one end is positioned at the upper outside of barricade panel, and the oblique duct other end reaches the barricade heel slab rear side on barricade basis.Prestress anchorage cable comprises steel strand and anchor head, and steel strand pvc pipe from oblique duct passes, and an end connects the anchor head of the prestress anchorage cable of barricade panels outside, and the other end extend into the rock foundation foot of hole under the barricade heel slab rear side.The anchor head of prestress anchorage cable is positioned at the barricade panels outside, comprise ground tackle, anchor head pad pier and concrete component, the steel strand outer end connects the ground tackle of anchor head, anchor head pad pier places between barricade panels outside and the ground tackle, and concrete component is enclosed in the barricade panels outside with ground tackle, anchor head pad pier and steel strand outer end.The steel strand end stretches in the rock foundation boring, the prestress anchorage cable anchoring section that formation is wrapped up by mortar, steel strand between anchor head and the prestress anchorage cable anchoring section form the free section of prestress anchorage cable, and the free section of prestress anchorage cable comprises that the prestress anchorage cable anchoring section is with top in part in the oblique duct pvc pipe of steel strand and the boring of oblique duct rock foundation.
Adopt the main construction sequence of embankment on the prestress anchorage cable counterfort wall reinforcing rock foundation of the present invention as follows:
1. at barricade Base Design position excavation rock foundation, in the boring of the rear wall construction prestress anchorage cable of rock foundation;
2. the reinforcing cage of colligation barricade basis, barricade panel, counterfort plate and anchor head pad pier is installed pvc pipe at the counterfort intralamellar part in advance by design attitude, and the template of barricade basis, barricade panel, counterfort plate and anchor head pad pier is installed;
3. pour into a mould the concrete on barricade basis, subsequently fluid concrete in the template of barricade panel, counterfort plate and anchor head pad pier;
4. behind the concrete initial set of barricade panel, barricade basis, counterfort plate and anchor head pad pier, oblique duct on the anchor head pad pier on the steel strand self catcher shingle nail of prestress anchorage cable is advanced to the bottom of boring, according to the boundary of prestress anchorage cable anchoring section design length cement injection mortar to prestress anchorage cable anchoring section and the free section of prestress anchorage cable;
5. after the strength of cement mortar in concrete strength to be cast and the boring all reaches design strength, the prestressing force that needs according to design carries out stretch-draw to the steel strand of prestress anchorage cable, and steel strand are locked on the anchor head pad pier with ground tackle, cut out unnecessary steel strand, with the ground tackle on the concrete enclosing anchor head pad pier and the fraction steel strand that expose, finish the construction of anchor head;
6. barricade panel rear side is carried out the backfill earthwork, and layering is tamped.
Compare with common counterfort wall, advantage of the present invention is:
1. apply prestressing force by the steel strand to prestress anchorage cable, greatly increased the moving ability that reaches overturning or slip resistance analysis of counterfort wall antiskid, be applied to highly higher counterfort wall, reduce the design length of barricade heel slab to a certain extent, reduced the concrete amount of counterfort wall effectively;
2. the counterfort plate is subjected to the prestressing force effect that prestress anchorage cable produces, and has reduced effectively in the counterfort plate to be conducive to reduce design thickness and the amount of reinforcement of counterfort plate along the size of the tensile stress of counterfort plate direction;
3. by the free section of prestress anchorage cable being arranged on the inside of counterfort plate, reduced the harmful effect of backfill body construction to the prestress anchorage cable service behaviour effectively.
Description of drawings
Fig. 1 is the structural representation of the common counterfort wall of prior art;
Fig. 2 is the structural representation of prestress anchorage cable counterfort wall of the present invention;
Fig. 3 is that prestress anchorage cable counterfort wall of the present invention is arranged on the cross-sectional view in the rock foundation;
Fig. 4 is the Facad structure schematic diagram of prestress anchorage cable counterfort wall of the present invention;
Fig. 5 is the plane structure schematic diagram of prestress anchorage cable counterfort wall of the present invention;
Fig. 6 is the structural representation that the anchor head of prestress anchorage cable counterfort wall of the present invention is connected with the barricade panel.
1, barricade basis 2, barricade panel
3, barricade toe board 4, barricade heel slab
5, counterfort plate 6, rock foundation
7, oblique duct 8, anchor head
9, the free section 10 of prestress anchorage cable, prestress anchorage cable anchoring section
11, boring 12, pvc pipe
13, steel strand 14, anchor head pad pier
15, ground tackle.
The specific embodiment
Now by reference to the accompanying drawings technical scheme of the present invention is described further.Fig. 2～Fig. 6 has shown the basic structure of the prestress anchorage cable counterfort wall that is applicable on the rock foundation and the state that arranges in rock foundation.
As shown in the figure, the prestress anchorage cable counterfort wall that is applicable on the rock foundation 6 involved in the present invention comprises barricade basis 1, barricade panel 2, counterfort plate 5 and prestress anchorage cable.Barricade basis 1 is the level board shape, and barricade panel 2 and counterfort plate 5 place on the barricade basis 1, and barricade panel 2 is perpendicular to barricade basis 1, and rectangular leg-of-mutton counterfort plate 5 places the inboard of barricade panel 2.Barricade panel 2 is divided into barricade basis 1 barricade toe board 3 and the inboard barricade heel slab 4 in the outside.Counterfort plate 5 connects barricade panel 2 and barricade heel slab 4.There is an oblique duct 7 inside of counterfort plate 5, angle between oblique duct 7 and the horizontal plane is 15 °～45 °, one end in oblique duct 7 is positioned at the upper outside of barricade panel 2, and the other end in oblique duct 7 reaches the rear side of the barricade heel slab 4 on lateral retaining wall basis 1 in the barricade panel 2.Prestress anchorage cable comprises steel strand 13 and anchor head 8, pass in the pvc pipe 12 of steel strand 13 from oblique duct 7, steel strand 13 1 ends connect the anchor head 8 of the prestress anchorage cable in barricade panel 2 outsides, and the other end extend in the rock foundation boring 11 under barricade heel slab 4 rear sides.The anchor head 8 of prestress anchorage cable is positioned at the outside of barricade panel 2, comprise ground tackle 15, anchor head pad pier 14 and concrete component, the outer end of steel strand 13 connects the ground tackle 15 of anchor head 8, anchor head pad pier 14 places between barricade panel 2 outsides and the ground tackle 15, and concrete component is enclosed in the outer end of ground tackle 15, anchor head pad pier 14 and steel strand 13 in the outside of barricade panel 2.The end of steel strand 13 stretches in the rock foundation boring 11, the prestress anchorage cable anchoring section 10 that formation is wrapped up by mortar, steel strand between anchor head 6 and the prestress anchorage cable anchoring section 10 form the free section 9 of prestress anchorage cable, the free section 9 of prestress anchorage cable comprise steel strand 13 in oblique duct pvc pipe 12 part and rock foundation boring 11 in prestress anchorage cable anchoring section 10 with top.
Claims (3)
1. one kind is applicable to the prestress anchorage cable counterfort wall on the rock foundation, comprise barricade basis (1), barricade panel (2) and counterfort plate (5), barricade basis (1) is the level board shape, barricade panel (2) and counterfort plate (5) place on the barricade basis (1), barricade panel (2) is perpendicular to barricade basis (1), and rectangular leg-of-mutton counterfort plate (5) places the inboard of barricade panel (2); It is characterized in that: also comprise prestress anchorage cable, prestress anchorage cable comprises steel strand (13) and anchor head (8), steel strand (13) pass from the inner oblique duct (7) of counterfort plate (5), steel strand (13) one ends connect the prestress anchorage cable anchor head (8) in barricade panel (2) outside, and the other end extend into rock foundation boring (11) bottom under barricade heel slab (4) rear side.
2. the prestress anchorage cable counterfort wall that is applicable on the rock foundation according to claim 1, it is characterized in that, the anchor head of described prestress anchorage cable (8) comprises ground tackle (15), anchor head pad pier (14) and concrete component, steel strand (13) outer end connects ground tackle (15), anchor head pad pier (14) places between barricade panel (2) outside and the ground tackle (15), and concrete component is enclosed in ground tackle (15), anchor head pad pier (14) and steel strand (13) outer end in the outside of barricade panel (2).
3. the prestress anchorage cable counterfort wall that is applicable on the rock foundation according to claim 1 is characterized in that, the angle between described oblique duct (7) and the horizontal plane is 15 °～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189482 CN102304927B (en) | 2011-07-07 | 2011-07-07 | Prestress anchor cable buttress-type parapet suitable for rock substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110189482 CN102304927B (en) | 2011-07-07 | 2011-07-07 | Prestress anchor cable buttress-type parapet suitable for rock substrate |
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| Publication Number | Publication Date |
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| CN102304927A CN102304927A (en) | 2012-01-04 |
| CN102304927B true CN102304927B (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110189482 Active CN102304927B (en) | 2011-07-07 | 2011-07-07 | Prestress anchor cable buttress-type parapet suitable for rock substrate |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587390A (en) * | 2012-03-23 | 2012-07-18 | 广州中煤江南基础工程公司 | Outside-enhanced retaining supporting structure |
| CN102817368B (en) * | 2012-09-04 | 2016-03-16 | 中铁二院工程集团有限责任公司 | High cantilever Complex retaining wall structure |
| CN103603369B (en) * | 2013-12-09 | 2015-07-15 | 中国石油集团工程设计有限责任公司 | Construction method of anchor pile counterfort retaining wall |
| CN105821902B (en) * | 2016-03-24 | 2017-08-18 | 浙江大学城市学院 | The light-duty armored concrete Ecological Retaining Wall construction method of vertical lattice |
| CN109750689A (en) * | 2019-03-07 | 2019-05-14 | 浙江交工集团股份有限公司 | A kind of Study on Reinforced Embankments Using soil blocking component afforested and its construction method |
| CN109695254A (en) * | 2019-03-07 | 2019-04-30 | 浙江交工集团股份有限公司 | A kind of road shoulder soil blocking component afforested and its construction method |
| CN112095657A (en) * | 2020-09-27 | 2020-12-18 | 中冶京诚工程技术有限公司 | Retaining wall foundation structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1605679A (en) * | 2004-11-12 | 2005-04-13 | 周志祥 | Anchor cable retaining wall road bank and cantilevered structured combined road |
| JP2005350884A (en) * | 2004-06-08 | 2005-12-22 | Free Kogyo Kk | Method for widening road and the like, and wall surface panel |
| KR100799358B1 (en) * | 2007-04-10 | 2008-01-30 | 주식회사 다우컨설턴트 | Combined retaining wall and method for constructing thereof |
| CN201801843U (en) * | 2010-08-24 | 2011-04-20 | 沈迪州 | Overwater gravity type earth-retaining structure with anchoring structure |
| CN202131610U (en) * | 2011-07-07 | 2012-02-01 | 铁道第三勘察设计院集团有限公司 | Prestressed anchor rope buttress type dead wall applicable for rock foundation |
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2011
- 2011-07-07 CN CN 201110189482 patent/CN102304927B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005350884A (en) * | 2004-06-08 | 2005-12-22 | Free Kogyo Kk | Method for widening road and the like, and wall surface panel |
| CN1605679A (en) * | 2004-11-12 | 2005-04-13 | 周志祥 | Anchor cable retaining wall road bank and cantilevered structured combined road |
| KR100799358B1 (en) * | 2007-04-10 | 2008-01-30 | 주식회사 다우컨설턴트 | Combined retaining wall and method for constructing thereof |
| CN201801843U (en) * | 2010-08-24 | 2011-04-20 | 沈迪州 | Overwater gravity type earth-retaining structure with anchoring structure |
| CN202131610U (en) * | 2011-07-07 | 2012-02-01 | 铁道第三勘察设计院集团有限公司 | Prestressed anchor rope buttress type dead wall applicable for rock foundation |
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| CN102304927A (en) | 2012-01-04 |
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Address after: 300142 Hebei District, Zhongshan Road, No. 10, Patentee after: China Railway Design Group Limited Address before: 300142 Hebei District, Zhongshan Road, No. 10, Patentee before: China Railway Third Survey and Design Institute Group Ltd. |
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