CN103266604A - Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof - Google Patents
Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof Download PDFInfo
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- CN103266604A CN103266604A CN2013101602070A CN201310160207A CN103266604A CN 103266604 A CN103266604 A CN 103266604A CN 2013101602070 A CN2013101602070 A CN 2013101602070A CN 201310160207 A CN201310160207 A CN 201310160207A CN 103266604 A CN103266604 A CN 103266604A
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Abstract
The invention discloses a hoop-type circular-section anchor-rod slide-resistant pile and a construction method thereof. The hoop-type circular-section anchor-rod slide-resistant pile comprises a circular-section slide-resistant pile body, a hoop-type steel belt, a steel nail, anchor rods, anchorage devices and a suspended-net concrete spraying layer. The hoop-type steel belt is hooped on the upper cambered surface of the circular-section slide-resistant pile body, the anchor rods penetrate reserved anchor rod holes on linear sections of the hoop-type steel belt to be connected and anchored. Inclined supports matched with incident angles of the anchor rods are arranged on outer sides of the linear sections of the steel belt. Steel base plates are arranged between the anchorage devices and the inclined supports. Concrete sealing anchors are arranged on the inclined supports. The suspended-net concrete spraying layer is suspended outside the hoop-type steel belt. The steel nail is inserted into reserved steel nail holes on the suspended-net concrete spraying layer, the hoop-type steel belt and the circular-section slide-resistant pile body. The hoop-type circular-section anchor-rod slide-resistant pile is simple in structure, low in cost and convenient to construct, materials of the pile body are saved, convenience in mechanical pile forming is realized, and the hoop-type circular-section anchor-rod slide-resistant pile is widely applicable to complex landslides, high-slope management and deep-foundation-pit supporting projects.
Description
Technical field
The present invention relates to landslide, side slope control and Base hole supporting technology field, be specifically related to a kind of anchor ear type circular section anchor pole antislide pile and job practices thereof.
Background technology
Because the antislide pile pile body adopts reinforced concrete structure, pile body stiffness is big, self-stability can be high, can resist bigger Thrust of Landslide, begins to be widely used in the landslide control engineering in the sixties in last century.Antislide pile pile body part build-in is below slide plane, resist gliding mass thrust by the counter-force that the following good ground of slide plane provides, this lower end is fixed, upper end beam type freely is subjected to force mode to make that the pile body cross section of antislide pile is bigger, it is longer to embed the required pile body of good ground, and construction material expends more.The appearance of anchor pole antislide pile has successfully solved this problem, can apply prestressed anchor pole or anchor cable by arranging in stake top section, the antislide pile stress system has become that the lower end is fixed, the upper end is hinged, the situation that pile body rear side is only bent can not appear when making antislide pile opposing gliding mass thrust, but be subjected to moment of flexure before and after the antislide pile stake simultaneously, reduced pile body internal force, give full play to the bending resistance of resistance to tension and the antislide pile of anchor pole, reached the purpose that reduces pile body sectional dimension and antislide pile fixed section length.
The antislide pile section form mainly contains rectangle and circle, circular anti-slide pile structure is well-balanced, mechanical hole building is convenient, not only is widely used in the indefinite complicated landslide control of main sliding direction of landslide, also is widely used in simultaneously being applicable in the pattern foundation pit supporting structure and high slope improvement engineering of mechanical hole building.Traditional doughnut draws antislide pile generally to adopt and reserves bolthole or locate the job practices that rig directly creeps into from pile body, be difficult to guarantee that the anchor pole projection line accurately is arranged on the axis of symmetry of circular cross-section, thereby cause the stressed and different design of actual pile body, can not give full play to the bending resistance of pile body like this, also make pile body be subjected to torsional interaction, do not reach the expection supporting effect of circular anchor pole antislide pile, and have certain potential safety hazard.Therefore, invent that a kind of novel circular section anchor pole antislide pile is administered for complexity landslide, high gradient slope and deep foundation pit support is significant.
Summary of the invention
The present invention seeks to be subjected in conjunction with the anchor pole antislide pile structural advantage of force mode and circular cross-section antislide pile, to solve the cutting point that is connected to of anchor pole and circular antislide pile, a kind of anchor ear type circular section anchor pole antislide pile and job practices thereof of simple in structure, with low cost, easy construction proposed.
A kind of anchor ear type of the present invention circular section anchor pole antislide pile comprises: circular section antislide pile, anchor ear steel band of model, steel nail, anchor pole, ground tackle and shotcrete with wire mesh layer; The cambered surface hoop has the anchor ear steel band of model on the antislide pile of circular section, the anchor pole preformed hole that anchor pole passes on the anchor ear steel band of model straightway connects anchoring, and cooperate the anchor pole incident angle that oblique holder is set in the steel band straightway outside, between ground tackle and the oblique holder billet is set, the concrete sealing off and covering anchorage is arranged in the oblique holder, outside anchor ear steel band of model band, hang with the shotcrete with wire mesh layer, in the steel nail preformed hole on steel nail insertion shotcrete with wire mesh layer, anchor ear steel band of model and the circular section antislide pile.
A kind of anchor ear type of the present invention circular section anchor pole anti-slide pile construction method, concrete technical scheme is as follows:
1. the circular section antislide pile being passed gliding mass and sliding band squeezes in the sliding bed;
2. at the outside cambered surface hoop of circular section antislide pile the anchor ear steel band of model is arranged;
3. steel nail is smeared the steel nail preformed hole that inserts pile body, anchor ear steel band of model behind the bar planting glue;
4. in precalculated position boring, place anchor pole, after anchor pole is passed gliding mass and sliding band and squeezes into sliding bed and slip casting;
5. utilize ground tackle that the anchor ear steel band of model is fixed on the circular antislide pile;
6. cooperate the anchor pole incident angle that oblique holder is set in the steel band straightway outside;
7. between ground tackle and the oblique holder billet is set, with concrete ground tackle and billet is encapsulated then;
8. carry out shotcrete with wire mesh in the steel band extension at last.
Described circular section antislide pile is reinforced concrete structure, and the outside, antislide pile pile body upper end is 3～8 steel nail preformed holes of equidistant placement radially.
Described anchor ear steel band of model adopts steel plate compression moulding, and the middle part arc section is semicircle, and internal diameter is consistent with circular antislide pile diameter, and the two ends straightway is vertical with semicircle termination tangent line; Five steel nail preformed holes of arc section equidistant placement overlap with steel nail preformed hole position on the circular antislide pile, and the both sides straightway is respectively arranged an anchor pole preformed hole.
The technological merit of anchor ear type of the present invention circular section anchor pole antislide pile is as follows:
(1) the present invention is subjected to the structural advantage of force mode and circular cross-section antislide pile in conjunction with the anchor pole antislide pile, the effect counter-force of anchor pole is converted into radial pressure to pile body by the anchor ear type, utilize the stronger anti-pressure ability of reinforced concrete structure, its resultant direction is overlapped with stake cross section axis of symmetry, the bending resistance of antislide pile and the resistance to tension of anchor pole have been given full play to, avoided anchor bolt construction to destroy antislide pile pile body structure, prevented that the anchor pole antislide pile in use is subjected to torsional interaction.
(2) the present invention saves pile shaft material, is convenient to mechanical piling, is applicable to complicated landslide, high slope improvement and deep foundation pit support engineering.
(3) anchor ear connecting portion of the present invention is easy to maintenance, only need chisel the shotcrete with wire mesh layer in case of necessity, removes ground tackle and can change parts such as steel band, steel nails.
Description of drawings
Fig. 1 is that anchor ear type circular section anchor pole antislide pile is administered the landslide schematic diagram.
Fig. 2 is anchor ear type circular section anchor pole antislide pile cross-sectional drawing.
Fig. 3 is anchor ear type circular section anchor pole antislide pile elevation.
Fig. 4 is the anchor structure schematic diagram.
1 – circular section antislide pile among the figure, 2 – anchor ear steel band of model, 3 – steel nails, 4 – shotcrete with wire mesh layers, 5 – tiltedly hold in the palm, 6 – ground tackles, 7 – concrete sealing off and covering anchorages, 8 – anchor poles, 9 – billets, 10 – gliding masses, the sliding band of 11 –, the sliding bed of 12 –, A – anchor pole and pile body distance, B – shotcrete with wire mesh extends out width, D – antislide pile diameter, H – width of steel band, L – anchor pole and steel band edge distance.
The specific embodiment
Root a tree name Fig. 1, Fig. 2, Fig. 3, shown in Figure 4:
A kind of anchor ear type circular section anchor pole antislide pile comprises: circular section antislide pile 1, anchor ear steel band of model 2, steel nail 3, anchor pole 8, ground tackle 6 and shotcrete with wire mesh layer 4; At circular section antislide pile 1 top cambered surface hoop anchor ear steel band of model 2 is arranged, the anchor pole preformed hole that anchor pole 8 passes on anchor ear steel band of model 2 straightways connects anchoring, and cooperate anchor pole 8 incident angles that oblique holder 5 is set in the steel band straightway outside, between ground tackle 6 and the oblique holder 5 billet 9 is set, concrete sealing off and covering anchorage 7 is arranged in the oblique holder 5, outside anchor ear steel band of model 2 bands, hang with shotcrete with wire mesh layer 4, in the steel nail preformed hole that steel nail 3 inserts on shotcrete with wire mesh layer 4, anchor ear steel band of model 2 and the circular section antislide pile 1.
Described circular section antislide pile 1 is reinforced concrete structure, and the antislide pile pile body upper end outside is with electric drill 3～8 steel nail preformed holes of equidistant placement radially, and the aperture is slightly larger than steel nail diameter, hole depth 500mm.
Described anchor ear steel band of model 2 adopts the compression moulding of Q345 shaped steel plate, and middle arc section is semicircle, and internal diameter is consistent with circular antislide pile diameter D, and the two ends straightway is vertical with semicircle termination tangent line, and steel plate width H is 700mm, thickness 200mm; Five steel nail preformed holes of arc section equidistant placement overlap with steel nail preformed hole position on the circular antislide pile, and the both sides straightway is respectively arranged an anchor pole preformed hole, and the anchor pole preformed hole is 350mm apart from the pile body distance A, apart from steel band edge distance L 〉=500mm.
Described steel nail 3 adopts φ 25 fining twisted steels (PSB930), insert pile body steel nail preformed hole after smearing bar planting glue, hole in the precalculated position, after placing anchor pole 8 and slip casting, utilize QVM25 type ground tackle and steel nail 3 that anchor ear steel band of model 2 is fixed on the circular antislide pile 1, and outside the steel band straightway, cooperate the anchor pole incident angle that oblique holder 5 is set, tiltedly reinforced concrete structure is adopted in holder 5, between anchor pole ground tackle 6 and the oblique holder 5 billet 9 is set, with concrete ground tackle and billet are encapsulated then, carry out shotcrete with wire mesh in steel band extension 20cm scope at last, anchor rod anchored body diameter 150mm, angle of incidence 15 degree, anchor pole 8 adopts two φ 28 fining twisted steels (PSB930) to make, and ground tackle 6 adopts the QVM25 type, billet 9 adopts 300 * 300 * 25mm (long * wide * thick) steel plate, and shotcrete with wire mesh layer 4 scope are steel band 2 extension B=200mm.
A kind of anchor ear type circular section anchor pole anti-slide pile construction method, concrete technical scheme is as follows:
1. circular section antislide pile 1 being passed gliding mass 10 and sliding is with 11 to squeeze in the sliding bed 12;
2. at circular section antislide pile 1 outside cambered surface top hoop Q345 type anchor ear steel band of model 2 is arranged;
3. steel nail 3 is smeared the steel nail preformed hole that inserts pile body, anchor ear steel band of model 2 behind the bar planting glue;
4. in precalculated position boring, place anchor pole 8, two anchor poles that will adopt φ 28 fining twisted steels (PSB930) to make pass gliding mass 10 and slidingly are with 11 to squeeze into sliding bed 12 also after the slip casting;
5. utilize QVM25 type ground tackle 6 that anchor ear steel band of model 2 is fixed on the circular antislide pile 1;
6. be 700mm at width of steel band H, the straightway outside of thickness 200mm cooperates the incident angle of anchor pole 15 degree that oblique holder 5 is set;
The billet 9 of 300 * 300 * 25mm (long * wide * thick) 7. is set between ground tackle 6 and the oblique holder 5, with concrete ground tackle 6 and billet 9 is encapsulated then;
8. carry out shotcrete with wire mesh in steel band extension 200mm scope at last.
Claims (10)
1. an anchor ear type circular section anchor pole antislide pile comprises: circular section antislide pile (1), anchor ear steel band of model (2), steel nail (3), anchor pole (8), ground tackle (6) and shotcrete with wire mesh layer (4); It is characterized in that: the cambered surface hoop has anchor ear steel band of model (2) on circular section antislide pile (1) top, the anchor pole preformed hole that anchor pole (8) passes on anchor ear steel band of model (2) straightway connects anchoring, and cooperate anchor pole (8) incident angle that oblique holder (5) is set in the steel band straightway outside, between ground tackle (6) and the oblique holder (5) billet (9) is set, concrete sealing off and covering anchorage (7) is arranged in the oblique holder (5), hang with shotcrete with wire mesh layer (4) outside anchor ear steel band of model (2) band, steel nail (3) inserts shotcrete with wire mesh layer (4), in the steel nail preformed hole on anchor ear steel band of model (2) and the circular section antislide pile (1).
2. anchor ear type circular section anchor pole anti-slide pile construction method, concrete technical scheme is as follows:
1. circular section antislide pile (1) being passed gliding mass (10) and sliding band (11) squeezes in the sliding bed (12);
2. at the outside cambered surface hoop of circular section antislide pile (1) anchor ear steel band of model (2) is arranged;
3. steel nail (3) is smeared the steel nail preformed hole that inserts pile body, anchor ear steel band of model (2) behind the bar planting glue;
4. in precalculated position boring, place anchor pole, after anchor pole (8) is passed gliding mass (10) and sliding band (11) and squeezes into sliding bed (12) and slip casting;
5. utilize ground tackle (6) that anchor ear steel band of model (2) is fixed on the circular antislide pile (1);
6. cooperate the anchor pole incident angle that oblique holder (5) is set in the steel band straightway outside;
7. between ground tackle (6) and the oblique holder (5) billet (9) is set, with concrete ground tackle and billet is encapsulated then;
8. carry out shotcrete with wire mesh in steel band extension 200mm scope at last.
3. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: circular section antislide pile (1) is reinforced concrete structure, the outside, antislide pile pile body upper end is 3～8 steel nail preformed holes of equidistant placement radially.
4. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: described anchor ear steel band of model (2) adopts steel plate compression moulding, the middle part arc section is semicircle, and internal diameter is consistent with circular antislide pile diameter, and the two ends straightway is vertical with semicircle termination tangent line; Five steel nail preformed holes of arc section equidistant placement overlap with steel nail preformed hole position on the circular antislide pile, and the both sides straightway is respectively arranged an anchor pole preformed hole.
5. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: described steel nail (3) adopts φ 25 fining twisted steel PSB930, is to insert pile body steel nail preformed hole after smearing bar planting glue.
6. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: described shotcrete with wire mesh layer (4) scope is anchor ear steel band of model (2) extension B=200mm.
7. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: reinforced concrete structure is adopted in described oblique holder (5).
8. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: described ground tackle (6) adopts the QVM25 type, and ground tackle (6) and billet (9) encapsulate with concrete.
9. a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile, it is characterized in that: described anchor pole (8) adopts two φ 28 fining twisted steel PSB930 to make, anchoring body diameter 150mm, angle of incidence 15 degree.
10.1 a kind of anchor ear type according to claim 1 circular section anchor pole antislide pile is characterized in that: described billet (9) adopts long 300 * wide by 300 * thick 25mm steel plate.
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| CN201310160207.0A CN103266604B (en) | 2013-05-03 | 2013-05-03 | A kind of Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof |
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| CN201310160207.0A CN103266604B (en) | 2013-05-03 | 2013-05-03 | A kind of Hoop-type circular-section anchor-rod slide-resistant pile and construction method thereof |
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| CN105881879A (en) * | 2014-12-16 | 2016-08-24 | 吴汉生 | Disposable filament winding disk used for forming of resin glass fiber wound rod pieces |
| CN108487255A (en) * | 2018-02-02 | 2018-09-04 | 江苏工程职业技术学院 | Modified H profile steel anchor pole composite pile-prefabricated board wall base pit enclosure construction method |
| CN110424480A (en) * | 2019-08-16 | 2019-11-08 | 招商局重庆交通科研设计院有限公司 | Buildings pile guard method |
| CN113738971A (en) * | 2021-07-30 | 2021-12-03 | 浙江珊溪水利水电开发股份有限公司 | Assembled honeycomb duct |
| CN114235566A (en) * | 2021-11-08 | 2022-03-25 | 中国电建集团华东勘测设计研究院有限公司 | Model test system and method for testing multiple arc model calculation design thrust effect |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105881879A (en) * | 2014-12-16 | 2016-08-24 | 吴汉生 | Disposable filament winding disk used for forming of resin glass fiber wound rod pieces |
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| CN113738971A (en) * | 2021-07-30 | 2021-12-03 | 浙江珊溪水利水电开发股份有限公司 | Assembled honeycomb duct |
| CN114235566A (en) * | 2021-11-08 | 2022-03-25 | 中国电建集团华东勘测设计研究院有限公司 | Model test system and method for testing multiple arc model calculation design thrust effect |
| CN114235566B (en) * | 2021-11-08 | 2023-09-15 | 中国电建集团华东勘测设计研究院有限公司 | Model test system and method for checking multiple circular arc model calculation design thrust effect |
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