CN102251525A - Framework prestress anchor rod-reinforced supporting structure for gravity type retaining wall and construction method thereof - Google Patents

Framework prestress anchor rod-reinforced supporting structure for gravity type retaining wall and construction method thereof Download PDF

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Publication number
CN102251525A
CN102251525A CN2011100955979A CN201110095597A CN102251525A CN 102251525 A CN102251525 A CN 102251525A CN 2011100955979 A CN2011100955979 A CN 2011100955979A CN 201110095597 A CN201110095597 A CN 201110095597A CN 102251525 A CN102251525 A CN 102251525A
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CN
China
Prior art keywords
anchor
column
prestressed
crossbeam
construction
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CN2011100955979A
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Chinese (zh)
Inventor
朱彦鹏
周勇
董建华
马天忠
叶帅华
毕东涛
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兰州理工大学
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Priority to CN2011100955979A priority Critical patent/CN102251525A/en
Publication of CN102251525A publication Critical patent/CN102251525A/en

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Abstract

The invention discloses a framework prestress anchor rod-reinforced supporting structure for a gravity type retaining wall and a construction method thereof. In the structure, a prestress anchor rod (3) penetrates through a crossed part of a cross beam (1) and an upright post (2) as well as a gravity type retaining wall (4) and is fixedly embedded inside a reinforced soil body; cement mortar is wrapped on the periphery of an anchor section (7) of the prestress anchor rod (3); a free section (13) of the prestress anchor rod (3) is coated with a layer of corrosion resistant material (14); a plastic casing (15) is sleeved outside the corrosion resistant material (14); and the end part of the prestress anchor rod (3) is anchored at the crossed part of the cross beam (1) and the upright post (2) by using an anchor head (5). The construction method comprises the following specific steps of: carrying out manufacturing and constructing on the prestress anchor rod (3); casting a capping crown beam (8), the upright post (2) and the cross beam (1); locking the anchor head (5) which is connected with the prestress anchor rod (3) in a fastening manner by using an anchor appliance (16); carrying out construction on the prestress anchor rod (3), the cross beam (1) and the the upright post (2) on next work surface according to the previous steps; finishing tensioning and anchoring of the prestress anchor rod (3) on each layer; and casting a foundation pile (9).

Description

Frame pre-stress bolt anchorage gravity barricade supporting and protection structure and job practices thereof
Technical field
The present invention relates to the supporting field of side slope.
Background technology
In the past, the support technology to highway and building slope adopted the gravity barricade more.The way of gravity barricade can adopt free stone masonry, also can adopt plain concrete to build and form, and this kind method mainly relies on the deadweight of barricade and rigidity to come the lateral pressure of the soil body after the resistance wall.
The shortcoming of this support technology is: (1) is from great; (2) rigidity is big, poor seismic behavior; (3) resistance to overturning is poor, the resistance to capsizing deficiency.Therefore, the situation of overturning of retaining wall and slippage often occurs, influence the safety of engineering services, at this moment the gravity barricade then must be reinforced.
Summary of the invention
The supporting and protection structure and the job practices thereof that the purpose of this invention is to provide a kind of frame pre-stress bolt anchorage gravity barricade.
The present invention is frame pre-stress bolt anchorage gravity barricade supporting and protection structure and job practices thereof, it is trapezoidal gravity barricade 4 that one shape of cross section is arranged in its supporting and protection structure, gravity barricade 4 backs are for being reinforced the soil body, crossbeam 1, column 2 and thereafter gravity barricade 4 constitute space frames, prestressed anchor 3 passes the crossover sites of crossbeam 1 and column 2, gravity barricade 4 build-ins are in being reinforced inside soil body, around the anchoring section 7 of prestressed anchor 3, wrap up cement mortar, on the free section 13 of prestressed anchor 3, be coated with one deck anti-corrosion material 14, suit PVC plastic bushing 15 outside anti-corrosion material 14, around PVC plastic bushing 15, wrap up cement mortar, anchor head 5 fixes on the end anchor of prestressed anchor 3 crossover sites of crossbeam 1 and column 2, the suffered soil pressure of gravity barricade 4 reaches the anchoring section 7 of prestressed anchor 3 by anchor head 5, and is anchored in the good ground by anchoring section 7.
Job practices of the present invention the steps include:
(1) making and construction prestressed anchor 3: at first in soil layer, offer hole 10, to be welded on the reinforcing bar anchor tie 12 medium-height trestle 11, reinforcing bar anchor tie 12 is positioned in the hole 10, inject cement mortar 6 at anchoring section 7, on the free section 13 of reinforcing bar anchor tie 12, smear anti-corrosion material 14, put PVC plastic bushing 15 in free section 13 then, in the hole 10 of free section 13, inject cement mortar 6 at last;
(2) pour into a mould bear down on one hat beam 8, column 2 and crossbeam 1: at the design attitude place formwork of first root post 2 and the first horizontal row beam 1, the cage of reinforcement and the concreting of colligation crossbeam 1, column 2 in the groove that formwork forms;
(3) concrete strength for the treatment of crossbeam 1, column 2 reaches 85% and reinforcing bar anchor tie 12 is carried out prestressed stretch-draw when above, form prestressed anchor 3, will be locked with ground tackle 16 with the anchor head 5 that prestressed anchor 3 is fastenedly connected, do the concrete spray coating 17 that is used to protect anchor head 5 and ground tackle 16 then;
(4), and finish the stretch-draw and the anchoring of each layer prestressed anchor 3 according to this step the construct prestressed anchor 3 of next work plane and crossbeam 1, column 2;
(5) according to the bottom of (2) step operation construction column 2,, make all the other prestressed anchors 3 and finish corresponding operation at design attitude place, the bottom of column 2 construction crossbeam 1 to column 2;
(6) make foundation pile 9 in the corresponding position, bottom of column 2: put into reinforcing cage in the stake hole of offering, reinforcing bars in the bottom protruding bar of column 2 and the foundation pile 9 are welded to connect cast foundation pile 9.
The invention has the beneficial effects as follows: by original unsettled gravity barricade is adopted the frame pre-stress bolt anchorage, change the stress of structure, passive stressed with original gravity barricade is transformed into a kind of active force structure, and the prestressing force that applies has improved the stability of side slope; Framework that applies on original gravity barricade and prestressed anchor can be controlled the sidesway and the distortion of side slope effectively, improve its anti-seismic performance simultaneously; Overcome unsettled gravity barricade removed rebuild the cost height, engineering quantity is big, safety is low, to shortcomings such as environmental disruption are big; The safety that perturbation to side slope in work progress is little, the employing reverse construction has guaranteed work progress; Technology is simple, is convenient to use.
Description of drawings
Fig. 1 is the elevation of structure of the present invention, and Fig. 2 is the sectional side view among Fig. 1, and Fig. 3 is a prestressed anchor detail of construction of the present invention, also is construction reference figure, the reinforcing bar anchor tie 12 among the figure in construction and the name after applying prestressing force be called prestressed anchor 3.
The specific embodiment
The present invention is frame pre-stress bolt anchorage gravity barricade supporting and protection structure and job practices thereof, as Fig. 1, Fig. 2, shown in Figure 3, it is trapezoidal gravity barricade 4 that one shape of cross section is arranged in its supporting and protection structure, gravity barricade 4 backs are for being reinforced the soil body, crossbeam 1, column 2 and thereafter gravity barricade 4 constitute space frames, prestressed anchor 3 passes the crossover sites of crossbeam 1 and column 2, gravity barricade 4 build-ins are in being reinforced inside soil body, around the anchoring section 7 of prestressed anchor 3, wrap up cement mortar, on the free section 13 of prestressed anchor 3, be coated with one deck anti-corrosion material 14, suit PVC plastic bushing 15 outside anti-corrosion material 14, around PVC plastic bushing 15, wrap up cement mortar, anchor head 5 fixes on the end anchor of prestressed anchor 3 crossover sites of crossbeam 1 and column 2, the suffered soil pressure of gravity barricade 4 reaches the anchoring section 7 of prestressed anchor 3 by anchor head 5, and is anchored in the good ground by anchoring section 7.
The anchor pole inclination angle that prestressed anchor 3 is become with horizontal plane is 5 °~15 °.
When implementing, should adopt contrary sequence method, section construction, from top to bottom successively promptly, section construction, the step of its job practices is:
(1) making and construction prestressed anchor 3: at first in soil layer, offer hole 10, to be welded on the reinforcing bar anchor tie 12 medium-height trestle 11, reinforcing bar anchor tie 12 is positioned in the hole 10, inject cement mortar 6 at anchoring section 7, on the free section 13 of reinforcing bar anchor tie 12, smear anti-corrosion material 14, put PVC plastic bushing 15 in free section 13 then, in the hole 10 of free section 13, inject cement mortar 6 at last;
(2) pour into a mould bear down on one hat beam 8, column 2 and crossbeam 1: at the design attitude place formwork of first root post 2 and the first horizontal row beam 1, the cage of reinforcement and the concreting of colligation crossbeam 1, column 2 in the groove that formwork forms;
(3) concrete strength for the treatment of crossbeam 1, column 2 reaches 85% and reinforcing bar anchor tie 12 is carried out prestressed stretch-draw when above, form prestressed anchor 3, will be locked with ground tackle 16 with the anchor head 5 that prestressed anchor 3 is fastenedly connected, do the concrete spray coating 17 that is used to protect anchor head 5 and ground tackle 16 then;
(4), and finish the stretch-draw and the anchoring of each layer prestressed anchor 3 according to this step the construct prestressed anchor 3 of next work plane and crossbeam 1, column 2;
(5) according to the bottom of (2) step operation construction column 2,, make all the other prestressed anchors 3 and finish corresponding operation at design attitude place, the bottom of column 2 construction crossbeam 1 to column 2;
(6) make foundation pile 9 in the corresponding position, bottom of column 2: put into reinforcing cage in the stake hole of offering, reinforcing bars in the bottom protruding bar of column 2 and the foundation pile 9 are welded to connect cast foundation pile 9.

Claims (3)

1. frame pre-stress bolt anchorage gravity barricade supporting and protection structure, it is trapezoidal gravity barricade (4) that one shape of cross section is arranged, gravity barricade (4) back is for being reinforced the soil body, it is characterized in that crossbeam (1), column (2) and thereafter gravity barricade (4) constitute space frame, prestressed anchor (3) passes the crossover sites of crossbeam (1) and column (2), gravity barricade (4) build-in is in being reinforced inside soil body, anchoring section (7) in prestressed anchor (3) wraps up cement mortar on every side, on the free section (13) of prestressed anchor (3), be coated with one deck anti-corrosion material (14), suit PVC plastic bushing (15) outside anti-corrosion material (14), wrap up cement mortar on every side at PVC plastic bushing (15), anchor head (5) fixes on the end anchor of prestressed anchor (3) crossover sites of crossbeam (1) and column (2), the suffered soil pressure of gravity barricade (4) reaches the anchoring section (7) of prestressed anchor (3) by anchor head (5), and is anchored in the good ground by anchoring section (7).
2. frame pre-stress bolt anchorage gravity barricade supporting and protection structure according to claim 1 is characterized in that the anchor pole inclination angle that prestressed anchor (3) is become with horizontal plane is 5 °~15 °.
3. the job practices of frame pre-stress bolt anchorage gravity barricade supporting and protection structure the steps include:
(1) making and construction prestressed anchor (3): at first in soil layer, offer hole (10), to be welded on the reinforcing bar anchor tie (12) medium-height trestle (11), reinforcing bar anchor tie (12) is positioned in the hole (10), inject cement mortar (6) at anchoring section (7), on the free section (13) of reinforcing bar anchor tie (12), smear anti-corrosion material (14), put PVC plastic bushing (15) in free section (13) then, in the hole (10) of free section (13), inject cement mortar (6) at last;
(2) pour into a mould bear down on one Guan Liang (8), column (2) and crossbeam (1): at the design attitude place formwork of first root post (2) and the first horizontal row beam (1), the cage of reinforcement and the concreting of colligation crossbeam (1), column (2) in the groove that formwork forms;
(3) concrete strength for the treatment of crossbeam (1), column (2) reaches 85% and reinforcing bar anchor tie (12) is carried out prestressed stretch-draw when above, form prestressed anchor (3), will be locked with ground tackle (16) with the anchor head (5) that prestressed anchor (3) are fastenedly connected, do the concrete spray coating (17) that is used to protect anchor head (5) and ground tackle (16) then;
(4), and finish the stretch-draw and the anchoring of each layer prestressed anchor (3) according to this step the construct prestressed anchor (3) of next work plane and crossbeam (1), column (2);
(5),, make all the other prestressed anchors (3) and finish corresponding operation at the design attitude place, bottom of column (2) construction crossbeam (1) according to the bottom of (2) step operation construction column (2) to column (2);
(6) make foundation pile (9) in the corresponding position, bottom of column (2): put into reinforcing cage in the stake hole of offering, the bottom protruding bar and interior the reinforcing bar of foundation pile (9) of column (2) is welded to connect, pour into a mould foundation pile (9).
CN2011100955979A 2011-04-12 2011-04-12 Framework prestress anchor rod-reinforced supporting structure for gravity type retaining wall and construction method thereof CN102251525A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518147A (en) * 2011-11-28 2012-06-27 湖南大学 Anchoring and retaining structure for reducing support height of existing overhigh retaining wall
CN102852343A (en) * 2012-10-15 2013-01-02 胡卫军 SP (Self Propelled) plate assembling type ancient city wall reinforcing structure and construction method
CN103469814A (en) * 2013-09-24 2013-12-25 兰州理工大学 Novel barricade supporting structure for road or river bank dam and construction method thereof
CN104631432A (en) * 2015-01-16 2015-05-20 兰州理工大学 Flexible supporting system for prestress anchor supporting plate of sheet-pile retaining wall and construction method
CN104762978A (en) * 2014-12-26 2015-07-08 浙江省电力设计院 Anchor rod gravity retaining wall for high slope support and manufacturing method
CN104878719A (en) * 2015-05-28 2015-09-02 杭州江润科技有限公司 Mutually-embedded reinforced ecological retaining wall construction method
CN105155534A (en) * 2015-08-07 2015-12-16 兰州理工大学 Rapidly-assembled recoverable frame anchor rod structure and construction method
CN105951874A (en) * 2016-06-24 2016-09-21 山西省交通规划勘察设计院 Retaining wall reinforcing structure and construction method thereof
CN106836275A (en) * 2017-04-13 2017-06-13 中国地质科学院探矿工艺研究所 For landscape ecological friendly barricade, the implementation of quick protection till side slope
CN107748048A (en) * 2017-12-18 2018-03-02 兰州理工大学 Sash reinforcement with prestressed anchor side slope shaking table model device and construction method
CN108661069A (en) * 2018-04-02 2018-10-16 山东建筑大学 Close on the wall piled anchor composite structure and method of old Retaining Wall Reinforcement under the load of river road surface
CN108755703A (en) * 2018-07-04 2018-11-06 中建七局第四建筑有限公司 The high Pulling-Resistant Anchor Rod supporting construction and its construction method of soft soil foundation pit
CN108842790A (en) * 2018-06-26 2018-11-20 兰州理工大学 A kind of embankment side slope framework anchor holding frame lattice assembled retaining structure and construction method
CN109469074A (en) * 2018-10-26 2019-03-15 中铁二院成都勘察设计研究院有限责任公司 A kind of cutting slope defending structure and its construction method

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102518147B (en) * 2011-11-28 2013-12-25 湖南大学 Anchoring and retaining structure for reducing support height of existing overhigh retaining wall
CN102518147A (en) * 2011-11-28 2012-06-27 湖南大学 Anchoring and retaining structure for reducing support height of existing overhigh retaining wall
CN102852343A (en) * 2012-10-15 2013-01-02 胡卫军 SP (Self Propelled) plate assembling type ancient city wall reinforcing structure and construction method
CN102852343B (en) * 2012-10-15 2014-12-17 胡卫军 SP (Self Propelled) plate assembling type ancient city wall reinforcing structure and construction method
CN103469814A (en) * 2013-09-24 2013-12-25 兰州理工大学 Novel barricade supporting structure for road or river bank dam and construction method thereof
CN104762978A (en) * 2014-12-26 2015-07-08 浙江省电力设计院 Anchor rod gravity retaining wall for high slope support and manufacturing method
CN104631432A (en) * 2015-01-16 2015-05-20 兰州理工大学 Flexible supporting system for prestress anchor supporting plate of sheet-pile retaining wall and construction method
CN104631432B (en) * 2015-01-16 2017-02-22 兰州理工大学 Flexible supporting system for prestress anchor supporting plate of sheet-pile retaining wall and construction method thereof
CN104878719A (en) * 2015-05-28 2015-09-02 杭州江润科技有限公司 Mutually-embedded reinforced ecological retaining wall construction method
CN105155534A (en) * 2015-08-07 2015-12-16 兰州理工大学 Rapidly-assembled recoverable frame anchor rod structure and construction method
CN105951874A (en) * 2016-06-24 2016-09-21 山西省交通规划勘察设计院 Retaining wall reinforcing structure and construction method thereof
CN106836275A (en) * 2017-04-13 2017-06-13 中国地质科学院探矿工艺研究所 For landscape ecological friendly barricade, the implementation of quick protection till side slope
CN106836275B (en) * 2017-04-13 2019-04-12 中国地质科学院探矿工艺研究所 For the landscape ecological friendly barricade of quick protection till side slope, implementation method
CN107748048A (en) * 2017-12-18 2018-03-02 兰州理工大学 Sash reinforcement with prestressed anchor side slope shaking table model device and construction method
CN108661069A (en) * 2018-04-02 2018-10-16 山东建筑大学 Close on the wall piled anchor composite structure and method of old Retaining Wall Reinforcement under the load of river road surface
CN108842790A (en) * 2018-06-26 2018-11-20 兰州理工大学 A kind of embankment side slope framework anchor holding frame lattice assembled retaining structure and construction method
CN108755703A (en) * 2018-07-04 2018-11-06 中建七局第四建筑有限公司 The high Pulling-Resistant Anchor Rod supporting construction and its construction method of soft soil foundation pit
CN108755703B (en) * 2018-07-04 2020-05-05 中建七局第四建筑有限公司 High-uplift anchor rod supporting structure of soft soil foundation pit and construction method thereof
CN109469074A (en) * 2018-10-26 2019-03-15 中铁二院成都勘察设计研究院有限责任公司 A kind of cutting slope defending structure and its construction method

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Application publication date: 20111123