CN105002904A - Installation and construction method for anti-floating anchor rod of end expanding type - Google Patents
Installation and construction method for anti-floating anchor rod of end expanding type Download PDFInfo
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- CN105002904A CN105002904A CN201510280826.2A CN201510280826A CN105002904A CN 105002904 A CN105002904 A CN 105002904A CN 201510280826 A CN201510280826 A CN 201510280826A CN 105002904 A CN105002904 A CN 105002904A
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- anchor rod
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- construction method
- end expanding
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 238000007667 floating Methods 0.000 title abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000007569 slipcasting Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 7
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an installation and construction method for an anti-floating anchor rod of an end expanding type. The method comprises the following steps that 1, a hole is drilled; 2, the anti-floating anchor rod is placed into the hole, wherein the anti-floating anchor rod comprises an anchor rod body and an anchor head, and an end expanding structure is arranged on the anchor head and comprises a base plate and connecting plates; the base plate is fixedly connected with the bottom end of the anchor rod body, and the connecting plates are annularly and evenly distributed and fixedly welded to the base plate and the anchor rod body at the same time; a connecting hole is arranged at each connecting plate, and an expanding skeleton is arranged on each connecting hole; one end of each expanding skeleton is hinged to the corresponding connecting hole, and a through hole is arranged at the other end of each expanding skeleton; a connecting line with elasticity is arranged inside the through holes in the expanding skeletons, and the two ends of the connecting line are connected into a whole; 3, the expanding skeletons are unfolded; wherein the anchor rod body is sleeved with a sleeve with the inner diameter larger than that of the anchor rod body, and pressure is applied from top to bottom, so that the expanding skeletons are driven to rotate around the connecting holes to be unfolded; 4, grouting is performed, wherein the sleeve is taken out, the drilled hole is grouted by means of a grouting pipe, and exhausting is performed in the grouting process by means of an exhaust pipe; 5, the anchor rod body and a base plate of a building are connected in an anchored manner.
Description
Technical field
The invention belongs to the anchor structure component technology field in building construction technology, be specifically related to a kind of construction method of installation of end expanding type anti-float anchor rod.
Background technology
Along with the development in city, the continuous minimizing of construction land, the utilization of people to the underground space also gets more and more.In a large number with the construction of the high-rise building of basement, underground garage, sunk type square and the underground such as subway, underground store building, make anti-floating problem very outstanding.Especially in the city that groundwater table is abundant, the deadweight as fruit structure is less than buoyancy, then structure base plate can occur under the effect of buoyancy and arch upward, ftracture, and finally make structure be destroyed, thus impact uses.
Publication number is that the Chinese patent of CN202359580U discloses a kind of anti-float anchor rod, be made up of fining twisted steel, locating support, anchor pad and nut, fining twisted steel welds multiple locating support respectively, and an anchor pad and a nut are installed in the upper end of fining twisted steel.Though this anti-float anchor rod has set up multiple locating support to strengthen uplift resistance, but the uplift resistance that locating support can provide is limited, and can not make full use of the frictional force between anchor pole and ground.
Publication number is that the Chinese patent application of CN204151781U discloses a kind of end carrying anti-float anchor rod assembly, comprise the anchor bar body by assembly connection and anchor head, described anchor bar body is anchored in building, described anchor head in the anchor head hole of anchor bar body bottom with the ground in anchor head hole between produce end resistance and frictional force.Although this anti-float anchor rod assembly have employed the structure of end expanding, the structure design of its anchor head is too complicated, and end expanding but not reinforcement, easily cause end break and reduce anti-pulling of anchor bar.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of construction method of installation of end expanding type anti-float anchor rod, can not only effectively reduce engineering cost, difficulty of construction, promote effective usage space of underground structure, and the shear strength that can improve uplift resistance and strengthen between anchor pole and ground.
For achieving the above object, the invention provides following technical scheme:
A construction method of installation for end expanding type anti-float anchor rod, comprises the steps:
1) hole: according to designing requirement, needing the position boring of arranging anti-float anchor rod;
2) anti-float anchor rod is put into: anti-float anchor rod is put into boring, described anti-float anchor rod, comprise anchor pole and be arranged on the anchor head bottom anchor pole, described anchor head is provided with end expanding structure, described end expanding structure comprises the base plate that is fixedly connected with described anchor pole bottom and uniform setting the junction plate be simultaneously welded and fixed with described base plate and anchor pole ringwise, described junction plate offers connecting hole, described connecting hole is provided with the expansion skeleton that one end is articulated and connected with it, the other end of described expansion skeleton is provided with through hole, the connecting line that one has retractility is provided with in the through hole of all described expansion skeletons, the two ends of described connecting line connect as one,
3) launch: the jacket casing utilizing internal diameter to be greater than anchor pole also applies pressure from the top down on anchor pole, orders about described expansion skeleton around described connecting hole rotary expansion;
4) slip casting: take out sleeve, utilizes Grouting Pipe to slip casting in boring, and utilizes stack to be vented in slip casting process;
5) by anchor pole and the anchor connection of building base plate.
Further, in described step 4), first utilize Grouting Pipe once grouting, the cement tensile strength formed until once grouting reaches >=5MPa after, then carry out secondary grouting, the cement tensile strength > 2.5MPa that secondary grouting is formed.
Further, in described step 3), the aperture that described expansion skeleton launches be expand the lower edge of skeleton and contacts baseplate spacing time expansion aperture.
Further, described expansion skeleton adopts reinforcement bar to make, and one end of described reinforcement bar is provided with hook, and the other end offers described through hole, and described expansion skeleton adopts described hook to be articulated and connected with corresponding described connecting hole.
Further, described anchor pole comprises steel pipe, is provided with many steel strand in described steel pipe.
Further, the central point of all described connecting holes is all positioned on the circle that drops on the axis of described anchor pole in the center of circle.
Further, described junction plate is positioned at the radial direction of described anchor pole.
Further, described end expanding structure also comprises the backing plate being positioned at and being fixedly set in above described junction plate on described anchor pole, and the external diameter of described backing plate is greater than the diameter of a circle at the central point place of described connecting hole.
Further, described connecting line adopts carbon fiber wire to make.
Beneficial effect of the present invention is:
The construction method of installation of end expanding type anti-float anchor rod of the present invention, by arranging end expanding structure, when construction and installation, utilize sleeve pressure down that expansion skeleton is launched outside interior, take out sleeve grouting behind shaft or drift lining, the installation of anti-float anchor rod can be completed, can effectively reduce engineering cost, difficulty of construction, promote effective usage space of underground structure, and the many settings expanding skeleton effectively can also strengthen the shear strength of end and the uplift resistance of anti-float anchor rod; Under the condition making full use of the end bearing ability between anti-floating anchor head and ground, significantly can shorten the spacing between rock-bolt length, expansion anti-float anchor rod, the structural safety of underground building (constructing) thing and construction safety are guaranteed, can effectively reduce engineering cost, difficulty of construction, promote effective usage space of underground structure.
By adopting the mode of twice slip casting to carry out slip casting operation, can effectively improve cement tensile strength, combining with the end expanding structure of anti-float anchor rod, the uplift resistance of anti-floating system can be strengthened further.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the structural representation of end expanding type anti-float anchor rod embodiment of the present invention;
Fig. 2 is the structural representation that the present embodiment does not install the anti-float anchor rod expanding skeleton;
Fig. 3 is the top view of Fig. 1;
Fig. 4 is the structural representation of end expanding structure;
Fig. 5 is the structural representation expanding skeleton;
Fig. 6 is structural representation when anti-float anchor rod being put into boring;
Fig. 7 is structural representation when utilizing sleeve that expansion skeleton is launched;
Fig. 8 is the structural representation after the anti-float anchor rod installation of the present embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described, can better understand the present invention and can be implemented, but illustrated embodiment is not as a limitation of the invention to make those skilled in the art.
The construction method of installation of the end expanding type anti-float anchor rod of the present embodiment, comprises the steps:
1) hole: according to designing requirement, needing the position boring of arranging anti-float anchor rod, drilling depth is determined according to national regulation.
2) anti-float anchor rod is put into: anti-float anchor rod is put into boring.As shown in Figure 1, the anti-float anchor rod that the present embodiment adopts, the anchor head comprising anchor pole 1 and be arranged on bottom anchor pole 1, anchor head is provided with end expanding structure.The end expanding structure of the present embodiment comprises the base plate 2 that is fixedly connected with anchor pole 1 bottom and uniform setting the junction plate 3 be simultaneously welded and fixed with base plate 2 and anchor pole 1 ringwise, junction plate 3 offers connecting hole 4, connecting hole 4 is provided with the expansion skeleton 5 that one end is articulated and connected with it, the other end expanding skeleton 5 is provided with through hole 6, the connecting line 7 that one has retractility is provided with in the through hole 6 of all expansion skeletons 5, the two ends of connecting line 7 connect as one, the connecting line 7 of the present embodiment adopts carbon fiber wire to make, and has the characteristic of high, the corrosion-resistant and high-modulus of intensity.
3) launch: the sleeve 12 utilizing internal diameter to be greater than anchor pole 1 is enclosed within anchor pole 1 and also applies pressure from the top down, order about and expand skeleton 5 around connecting hole 4 rotary expansion, concrete, it is expand the expansion aperture when lower edge of skeleton 5 contacts spacing with base plate 2 that the present embodiment expands the aperture that skeleton 5 launches, utilize base plate 2 and expand position limiting structure between skeleton 5, can prevent expanding skeleton 5 and rotate displacement when being subject to pulling capacity relative to base plate 2, anti-pulling force intensity can be improved further.
4) slip casting: take out sleeve 12, utilizes Grouting Pipe to slip casting in boring, and utilizes stack to be vented in slip casting process; The present embodiment first utilizes Grouting Pipe once grouting, until once grouting formed cement tensile strength reach >=5MPa after, carry out secondary grouting again, the cement tensile strength > 2.5MPa that secondary grouting is formed, concrete, the present embodiment first utilizes Grouting Pipe once grouting, after the cement tensile strength of once grouting formation reaches 5MPa, carry out secondary grouting again, the cement tensile strength that secondary grouting is formed is 3MPa; Certainly, according to actual needs, the cement tensile strength that once grouting obtains also can be 6MPa, 7MPa etc., and the cement tensile strength that secondary grouting obtains also can be 2.7MPa, 3.5MPa etc., and concrete value needs to determine according to actual design, is not repeated.By adopting the mode of twice slip casting to carry out slip casting operation, can effectively improve cement tensile strength, combining with the end expanding structure of anti-float anchor rod, the uplift resistance of anti-floating system can be strengthened further.
5) by anchor pole 1 and the anchor connection of building base plate, anti-floating system is formed.
Further, as shown in Figure 6, the expansion skeleton 5 of the present embodiment adopts reinforcement bar to make, one end of reinforcement bar is provided with hook 8, the other end offers through hole 6, expanding skeleton 5 adopts hook 8 to be articulated and connected with corresponding connecting hole 4, adopts the expansion skeleton 5 of this structure to have structure simple, the advantage that tensile strength is high.
Further, the anchor pole 1 of the present embodiment comprises steel pipe 9, is provided with many steel strand 10 in steel pipe 9, effectively can strengthen tensile strength.
Further, the central point of all connecting holes 4 is all positioned on the circle that drops on the axis of anchor pole 1 in the center of circle, and junction plate 4 is positioned at the radial direction of anchor pole 1, so, sleeve 12 just can be utilized more easily to order about expand skeleton and launch.The end expanding structure of the present embodiment also comprises the backing plate 11 being positioned at and being fixedly set in above junction plate 3 on anchor pole 1, the external diameter of backing plate 11 is greater than the diameter of a circle at the central point place of connecting hole 3, so, can limit the internal diameter of sleeve 12, namely the internal diameter of sleeve 12 is greater than backing plate 11 external diameter and could passes backing plate 11 can meeting and order about the requirement expanding skeleton and launch.
The construction method of installation of the end expanding type anti-float anchor rod of the present embodiment, by arranging end expanding structure, when construction and installation, utilize sleeve 12 pressure down that expansion skeleton 5 is launched outside interior, take out sleeve 12 grouting behind shaft or drift lining, the installation of anti-float anchor rod can be completed, can effectively reduce engineering cost, difficulty of construction, promote effective usage space of underground structure, and the many settings expanding skeleton 5 effectively can also strengthen the shear strength of end and the uplift resistance of anti-float anchor rod; Under the condition making full use of the end bearing ability between anti-floating anchor head and ground, significantly can shorten the spacing between rock-bolt length, expansion anti-float anchor rod 1, the structural safety of underground building (constructing) thing and construction safety are guaranteed, can effectively reduce engineering cost, difficulty of construction, promote effective usage space of underground structure.
The above embodiment is only that protection scope of the present invention is not limited thereto in order to absolutely prove the preferred embodiment that the present invention lifts.The equivalent alternative or conversion that those skilled in the art do on basis of the present invention, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. a construction method of installation for end expanding type anti-float anchor rod, is characterized in that: comprise the steps:
1) hole: according to designing requirement, needing the position boring of arranging anti-float anchor rod;
2) anti-float anchor rod is put into: anti-float anchor rod is put into boring, described anti-float anchor rod, comprise anchor pole and be arranged on the anchor head bottom anchor pole, described anchor head is provided with end expanding structure, described end expanding structure comprises the base plate that is fixedly connected with described anchor pole bottom and uniform setting the junction plate be simultaneously welded and fixed with described base plate and anchor pole ringwise, described junction plate offers connecting hole, described connecting hole is provided with the expansion skeleton that one end is articulated and connected with it, the other end of described expansion skeleton is provided with through hole, the connecting line that one has retractility is provided with in the through hole of all described expansion skeletons, the two ends of described connecting line connect as one,
3) launch: the jacket casing utilizing internal diameter to be greater than anchor pole also applies pressure from the top down on anchor pole, orders about described expansion skeleton around described connecting hole rotary expansion;
4) slip casting: take out sleeve, utilizes Grouting Pipe to slip casting in boring, and utilizes stack to be vented in slip casting process;
5) by anchor pole and the anchor connection of building base plate.
2. the construction method of installation of end expanding type anti-float anchor rod according to claim 1, it is characterized in that: in described step 4), first utilize Grouting Pipe once grouting, until once grouting formed cement tensile strength reach >=5MPa after, carry out secondary grouting again, the cement tensile strength > 2.5MPa that secondary grouting is formed.
3. the construction method of installation of end expanding type anti-float anchor rod according to claim 1, is characterized in that: in described step 3), the aperture that described expansion skeleton launches be expand the lower edge of skeleton and contacts baseplate spacing time expansion aperture.
4. the construction method of installation of end expanding type anti-float anchor rod according to claim 1, it is characterized in that: described expansion skeleton adopts reinforcement bar to make, one end of described reinforcement bar is provided with hook, the other end offers described through hole, and described expansion skeleton adopts described hook to be articulated and connected with corresponding described connecting hole.
5. the construction method of installation of end expanding type anti-float anchor rod according to claim 1, is characterized in that: described anchor pole comprises steel pipe, is provided with many steel strand in described steel pipe.
6. the construction method of installation of the end expanding type anti-float anchor rod according to any one of claim 1-5, is characterized in that: the central point of all described connecting holes is all positioned on the circle that drops on the axis of described anchor pole in the center of circle.
7. the construction method of installation of end expanding type anti-float anchor rod according to claim 6, is characterized in that: described junction plate is positioned at the radial direction of described anchor pole.
8. the construction method of installation of end expanding type anti-float anchor rod according to claim 6, it is characterized in that: described end expanding structure also comprises the backing plate being positioned at and being fixedly set in above described junction plate on described anchor pole, and the external diameter of described backing plate is greater than the diameter of a circle at the central point place of described connecting hole.
9. the construction method of installation of end expanding type anti-float anchor rod according to claim 7, it is characterized in that: described end expanding structure also comprises the backing plate being positioned at and being fixedly set in above described junction plate on described anchor pole, and the external diameter of described backing plate is greater than the diameter of a circle at the central point place of described connecting hole.
10. the construction method of installation of end expanding type anti-float anchor rod according to claim 1, is characterized in that: described connecting line adopts carbon fiber wire to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510280826.2A CN105002904B (en) | 2015-05-28 | 2015-05-28 | The construction method of installation of end expanding type anti-float anchor rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510280826.2A CN105002904B (en) | 2015-05-28 | 2015-05-28 | The construction method of installation of end expanding type anti-float anchor rod |
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| CN105002904A true CN105002904A (en) | 2015-10-28 |
| CN105002904B CN105002904B (en) | 2017-07-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476324A (en) * | 2017-07-12 | 2017-12-15 | 上海建工集团股份有限公司 | A kind of injecting grout through steel perforated pipe top formula plugging device and its method of work |
| CN112502143A (en) * | 2020-12-28 | 2021-03-16 | 江苏和跃新材料科技有限公司 | Expanded pressure type anchor disc and anchoring assembly |
| CN115369929A (en) * | 2022-09-22 | 2022-11-22 | 中国五冶集团有限公司 | Post-cast anti-floating anchor rod construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003010391A1 (en) * | 2001-07-23 | 2003-02-06 | Karda Jozef | Ground anchor with driving and opening device |
| KR20100060767A (en) * | 2008-11-28 | 2010-06-07 | 주식회사 세진이엔시 | Anchor for soft ground |
| CN202416302U (en) * | 2011-12-23 | 2012-09-05 | 浙江海洋学院普陀科学技术学院 | Umbrella-shaped anchor pile |
| CN103046581A (en) * | 2011-10-17 | 2013-04-17 | 五冶集团上海有限公司 | Anti-floating method for anchor rods of rotational flow tank |
| CN104131560A (en) * | 2013-10-21 | 2014-11-05 | 中国建筑第四工程局有限公司 | Anti-floating anchor and construction method thereof |
| CN104234050A (en) * | 2014-09-01 | 2014-12-24 | 德州市公路工程总公司 | Lead hole implanted anti-floating rock anchor rod with supporting trays and construction method thereof |
| CN204151781U (en) * | 2014-09-23 | 2015-02-11 | 张百全 | A kind of end carrying anti-float anchor rod assembly |
-
2015
- 2015-05-28 CN CN201510280826.2A patent/CN105002904B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003010391A1 (en) * | 2001-07-23 | 2003-02-06 | Karda Jozef | Ground anchor with driving and opening device |
| KR20100060767A (en) * | 2008-11-28 | 2010-06-07 | 주식회사 세진이엔시 | Anchor for soft ground |
| CN103046581A (en) * | 2011-10-17 | 2013-04-17 | 五冶集团上海有限公司 | Anti-floating method for anchor rods of rotational flow tank |
| CN202416302U (en) * | 2011-12-23 | 2012-09-05 | 浙江海洋学院普陀科学技术学院 | Umbrella-shaped anchor pile |
| CN104131560A (en) * | 2013-10-21 | 2014-11-05 | 中国建筑第四工程局有限公司 | Anti-floating anchor and construction method thereof |
| CN104234050A (en) * | 2014-09-01 | 2014-12-24 | 德州市公路工程总公司 | Lead hole implanted anti-floating rock anchor rod with supporting trays and construction method thereof |
| CN204151781U (en) * | 2014-09-23 | 2015-02-11 | 张百全 | A kind of end carrying anti-float anchor rod assembly |
Non-Patent Citations (1)
| Title |
|---|
| 叶书麟: "《地基处理工程实例应用手册》", 31 March 1998 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476324A (en) * | 2017-07-12 | 2017-12-15 | 上海建工集团股份有限公司 | A kind of injecting grout through steel perforated pipe top formula plugging device and its method of work |
| CN112502143A (en) * | 2020-12-28 | 2021-03-16 | 江苏和跃新材料科技有限公司 | Expanded pressure type anchor disc and anchoring assembly |
| CN115369929A (en) * | 2022-09-22 | 2022-11-22 | 中国五冶集团有限公司 | Post-cast anti-floating anchor rod construction method |
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| Publication number | Publication date |
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| CN105002904B (en) | 2017-07-07 |
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