CN105040693A - End expanding type anti-floating anchor rod - Google Patents
End expanding type anti-floating anchor rod Download PDFInfo
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- CN105040693A CN105040693A CN201510280813.5A CN201510280813A CN105040693A CN 105040693 A CN105040693 A CN 105040693A CN 201510280813 A CN201510280813 A CN 201510280813A CN 105040693 A CN105040693 A CN 105040693A
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- anchor rod
- type anti
- end expanding
- expanding type
- anchor pole
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Abstract
The invention discloses an end expanding type anti-floating anchor rod. The end expanding type anti-floating anchor rod comprises an anchor rod body and an anchor head arranged at the bottom of the anchor rod. The anchor head is provided with an end expanding structure. The end expanding structure comprises a bottom plate fixedly connected with the bottom end of the anchor rod body, and connecting plates which are annularly distributed evenly and fixed with the bottom plate and the anchor rod body in a welding manner. The connecting plates are provided with connecting holes. The connecting holes are provided with an expanding frame with one end hinged to the connecting holes. A through hole is formed in the other end of the expanding frame. The through hole of the expanding frame is internally provided with a telescopic connecting line. The two ends of the connecting line are connected into a whole. According to the end expanding type anti-floating anchor rod, the pulling resistance and the anti-shearing strength between the anchor rod body and rock and soil can be improved. The end expanding type anti-floating anchor rod has the beneficial effects of being simple in structure and convenient to machine, construct and install.
Description
Technical field
The invention belongs to the anchor structure component technology field in building construction technology, be specifically related to a kind 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 end expanding type anti-float anchor rod, the shear strength that can not only improve uplift resistance and strengthen between anchor pole and ground, and it is simple to have structure, is convenient to the advantage of processing and construction and installation.
For achieving the above object, the invention provides following technical scheme:
A kind of end expanding type 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.
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:
End expanding type anti-float anchor rod of the present invention, by arranging end expanding structure, when construction and installation, first anchor pole is put into boring, when end arrives foot of hole, 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, there is structure simple, be convenient to the advantage of processing and construction and installation, and the many settings expanding skeletons 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.
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.
As shown in Figure 1, be the structural representation of end expanding type anti-float anchor rod embodiment of the present invention.The end expanding type anti-float anchor rod of the present embodiment, 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.
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 present embodiment end expanding type anti-float anchor rod, by arranging end expanding structure, when construction and installation, first anchor pole 1 is put into boring, when end arrives foot of hole, 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, there is structure simple, be convenient to the advantage of processing and construction and installation, and the many settings expanding skeletons 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.
Adopt the construction method of installation of the end expanding type anti-float anchor rod of the present embodiment as follows:
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.
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, expanding the aperture that skeleton 5 launches is expand the expansion aperture when lower edge of skeleton 5 contacts spacing with base plate 2, 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; 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, concrete, first utilize 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.
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 (9)
1. an end expanding type anti-float anchor rod, comprise anchor pole and be arranged on the anchor head bottom anchor pole, it is characterized in that: 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.
2. 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, 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.
3. 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.
4. end expanding type anti-float anchor rod according to claim 2, is characterized in that: described anchor pole comprises steel pipe, is provided with many steel strand in described steel pipe.
5. the end expanding type anti-float anchor rod according to any one of claim 1-4, 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.
6. end expanding type anti-float anchor rod according to claim 5, is characterized in that: described junction plate is positioned at the radial direction of described anchor pole.
7. end expanding type anti-float anchor rod according to claim 5, 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.
8. 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. 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 |
|---|---|---|---|
| CN201510280813.5A CN105040693B (en) | 2015-05-28 | 2015-05-28 | End expanding type anti-float anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510280813.5A CN105040693B (en) | 2015-05-28 | 2015-05-28 | End expanding type anti-float anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105040693A true CN105040693A (en) | 2015-11-11 |
| CN105040693B CN105040693B (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510280813.5A Active CN105040693B (en) | 2015-05-28 | 2015-05-28 | End expanding type anti-float anchor rod |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839637A (en) * | 2016-05-23 | 2016-08-10 | 化学工业岩土工程有限公司 | Valve type enlarged footing stock supporting body |
| CN107119680A (en) * | 2017-02-23 | 2017-09-01 | 江苏景源万河环境科技有限公司 | A kind of anchor pole or pile foundation variable diameters steel reinforcement cage and application |
| CN109056705A (en) * | 2018-09-05 | 2018-12-21 | 江苏景源万河环境科技有限公司 | A kind of the variable diameters steel reinforcement cage and method of administration of concise structure |
| CN114000547A (en) * | 2021-11-29 | 2022-02-01 | 北京京诚华宇建筑设计研究院有限公司 | Anti-floating anchor rod structure and construction method thereof |
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| CN1193677A (en) * | 1997-03-19 | 1998-09-23 | 张继红 | Umbrella type anchor |
| RU2375244C1 (en) * | 2008-07-07 | 2009-12-10 | Государственное образовательное учреждение высшего профессионального образования Марийский государственный технический университет | Portable anchor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839637A (en) * | 2016-05-23 | 2016-08-10 | 化学工业岩土工程有限公司 | Valve type enlarged footing stock supporting body |
| CN107119680A (en) * | 2017-02-23 | 2017-09-01 | 江苏景源万河环境科技有限公司 | A kind of anchor pole or pile foundation variable diameters steel reinforcement cage and application |
| CN109056705A (en) * | 2018-09-05 | 2018-12-21 | 江苏景源万河环境科技有限公司 | A kind of the variable diameters steel reinforcement cage and method of administration of concise structure |
| CN114000547A (en) * | 2021-11-29 | 2022-02-01 | 北京京诚华宇建筑设计研究院有限公司 | Anti-floating anchor rod structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105040693B (en) | 2017-11-07 |
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Address after: 312400 middle forest building, No. 232, No. 232, south-east Road, Lushan street, Shengzhou, Zhejiang Patentee after: ZHEJIANG MIDDLE FOREST SURVEY RESEARCH CO., LTD. Address before: 312400 Shengzhou, Shaoxing, Sanjiang street street, 288-20 street, building No. five, building Patentee before: ZHEJIANG MIDDLE FOREST SURVEY RESEARCH CO., LTD. |