CN101691760A - Composite foundation combining anchor rods with excavation and construction method thereof - Google Patents
Composite foundation combining anchor rods with excavation and construction method thereof Download PDFInfo
- Publication number
- CN101691760A CN101691760A CN200910093283A CN200910093283A CN101691760A CN 101691760 A CN101691760 A CN 101691760A CN 200910093283 A CN200910093283 A CN 200910093283A CN 200910093283 A CN200910093283 A CN 200910093283A CN 101691760 A CN101691760 A CN 101691760A
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- anchor pole
- excavation
- master muscle
- digging
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 32
- 239000004567 concrete Substances 0.000 claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 17
- 239000011083 cement mortar Substances 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 210000003205 muscle Anatomy 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention provides a composite foundation combining anchor rods with excavation and a construction method thereof, and is mainly applicable to the tower foundation of a transmission line. The composite foundation is jointly formed by an anchor rod foundation and an excavation foundation and comprises an excavation foundation part and an anchor rod foundation part, wherein, the anchor rod foundation part is located in the rock formation of the surface of the earth and comprises at least one cylindrical or polygonal rock anchor rod; the rock anchor rod comprises an anchor rod main reinforcement and concrete or cement mortar surrounding the anchor rod main reinforcement; the anchor rod main reinforcement extends into the excavation foundation part; the excavation foundation part is located in the soil layer of the surface of the earth and comprises reinforcing bars and concrete; and the excavation foundation part and the anchor rod foundation part are connected by the anchor rod main reinforcement which extends into the excavation foundation part. The invention further provides a specific construction method.
Description
Technical field
The present invention relates to the foundation construction technical field of transmission line of electricity, relate in particular to a kind of composite foundation combining anchor rods with excavation and job practices thereof.
Background technology
Often run in the transmission line of electricity basis that shallow-layer is arranged is soil layer; and the depths is the geological conditions of rock stratum slightly; the base form that adopts before under this geological conditions is generally basis (the big slab foundation of excavation backfill class; footing foundation) or digging foundation; when load of roadway is big; the foundation bed degree of depth need surpass the rock stratum end face; the bearing capacity on basis could satisfy the load of roadway requirement; like this because digging foundation can not be drawn the rock stratum digs and can't adopt; and adopt big slab foundation and footing foundation will carry out methods such as explosion to the rock stratum so that the excavation of rock stratum part; so just bring very big difficulty to construction; huge earthwork excavated volume is arranged simultaneously; destroy undisturbed soil, be unfavorable for protecting environment.
Summary of the invention
In order to overcome defective of the prior art, the object of the present invention is to provide a kind of explosion rock stratum that need not, be convenient to construction, reduce the composite foundation combining anchor rods with excavation of earthwork excavated volume, mainly be applied in the electric power line pole tower basis.
Another object of the present invention is to provide a kind of job practices of composite foundation combining anchor rods with excavation.
For this reason, the present invention proposes a kind of composite foundation combining anchor rods with excavation, comprise digging foundation and anchor pole basis, described anchor pole basis is arranged in the rock stratum on the face of land, it comprises at least one cylindrical or polygonal rock bolt, described rock bolt has anchor pole master muscle and centers on the concrete or the cement mortar of anchor pole master muscle, and described anchor pole master muscle extend in the digging foundation; Described digging foundation is arranged in the soil layer on the face of land, and it is made of arrangement of reinforcement and concrete; Described digging foundation is connected by the anchor pole master muscle that extend in the digging foundation with the anchor pole basis.
Wherein, the described anchor pole master muscle length that extend into digging foundation is more than or equal to 40 times of anchor pole master muscle diameter.
Wherein, described around anchor pole master muscle concrete or the end face of cement mortar extend into the height h of digging foundation more than or equal to 10 centimetres.
Wherein, described digging foundation the cross sectional shape of vertical direction be the infundibulate of back-off or rectangle or on bottom side length trapezoidal in the bottom.
The present invention also provides a kind of job practices of composite foundation combining anchor rods with excavation, and construction process is as follows:
1) pore-forming utilizes jumbolter to get out armature boring in the soil layer on the face of land and rock stratum;
2) after pore-forming finishes, put into and fixing described anchor pole master muscle, make described anchor pole master muscle extend into digging foundation length partly 40 times more than or equal to anchor pole master muscle diameter, pour into described anchor pole then partly around the concrete or the cement mortar of anchor pole master muscle, make describedly to extend into the height of digging foundation part more than or equal to 10 centimetres around the concrete of anchor pole master muscle or the end face of cement mortar;
3) partly draw the foundation ditch that digs out the digging foundation part at the soil layer on the face of land;
4) partly lay and fixing described digging foundation part arrangement of reinforcement, concreting then at digging foundation.
Composite foundation combining anchor rods with excavation of the present invention can be used for that shallow-layer is a soil layer, the depths is the geological conditions of rock stratum slightly, mainly be applied in the electric power line pole tower basis, this composite foundation is united by anchor pole basis and digging foundation and is formed, because the digging foundation bottom surface places the rock stratum end face, therefore when stressed, bear main downforce by digging foundation, digging foundation and anchor pole basis are born uplift force and horizontal force jointly, so just can satisfy the transmission line of electricity load requirement.
Beneficial effect of the present invention is: this composite foundation combining anchor rods with excavation need not the explosion rock stratum, is convenient to construction, reduces earthwork excavated volume, utilizes undisturbed soil, is beneficial to the protection environment.
Description of drawings
Fig. 1 is the big slab foundation of prior art or the structural representation of footing foundation;
Fig. 2 is first kind of organigram of composite foundation combining anchor rods with excavation of the present invention;
Fig. 3 is the schematic flow sheet of composite foundation combining anchor rods with excavation of the present invention and job practices thereof;
Fig. 4 is the concrete structure size schematic diagram of Fig. 2, and wherein Fig. 4-1 is the sectional view of Fig. 2, and Fig. 4-2 is the vertical view of Fig. 2;
Fig. 5 is second kind of organigram of composite foundation combining anchor rods with excavation of the present invention;
Fig. 6 is the third organigram of composite foundation combining anchor rods with excavation of the present invention;
Wherein, the I-soil layer, the II-rock stratum, the 1-digging foundation, 2-anchor pole basis, the 3-rock bolt, 4-anchor pole master muscle, 5-is around the concrete or the cement mortar of anchor pole master muscle, 6-arrangement of reinforcement, 7-concrete, 8-armature boring, the foundation ditch of 9-digging foundation.
The specific embodiment
Below in conjunction with accompanying drawing composite foundation combining anchor rods with excavation of the present invention is described further.
As shown in Figure 2, composite foundation combining anchor rods with excavation of the present invention comprise digging foundation 1 and anchor pole basis 2, described anchor pole basis 2 is arranged in the rock stratum II on the face of land, it comprises at least one cylindrical or polygonal rock bolt 3, this rock bolt 3 has anchor pole master muscle 4 and centers on the concrete or the cement mortar 5 of anchor pole master muscle, and anchor pole master muscle 4 extend in the digging foundation 1; Described digging foundation 1 is arranged in the soil layer I on the face of land, and the bottom surface of its digging foundation 1 places rock stratum II end face, and it is made of arrangement of reinforcement 6 and concrete seven; Described digging foundation 1 is connected by the anchor pole master muscle 4 that extend in the digging foundation with anchor pole basis 2, and digging foundation 1 is the infundibulate of back-off at the cross sectional shape of vertical direction.Shown in Fig. 5-6, digging foundation 1 the cross sectional shape of vertical direction also can be rectangular or the top be longer than following trapezoidal.
As shown in Figure 4, the physical dimension of composite foundation combining anchor rods with excavation of the present invention can adopt following parameter: soil layer I is a loess formation, and the rock stratum II below the soil layer is the gentle breeze rock stratum, and the narrow end diameter in the top of described digging foundation 1 is 0.8m, and length is 1m; The diameter of lower enlarged end is 1.2cm, and length is 0.5m.Top digging foundation 1 is arranged in the thick loess formation of 1.5m.Four rock bolts 3 by arranged in squares are set in the gentle breeze rock stratum, rock bolt 3 spacings are that 40cm, its diameter are 0.15m, it is 6m that anchor pole master muscle 4 adopts HRB335II level screw-thread steel, its length of 36mm diameter, waters to be filled in anchor pole master muscle 4 concrete on every side or the cement mortar of cement mortar 5 employing C20 concrete or M20.The length that anchor pole master muscle enters digging foundation is 1.44m.This composite foundation combining anchor rods with excavation can bear 150 tons uplift force.
Fig. 3 shows the construction schematic diagram on basis of the present invention.Concrete construction process is as follows:
1) pore-forming utilizes jumbolter to get out armature boring in the soil layer on the face of land and rock stratum;
2) after pore-forming finishes, put into and fixing described anchor pole master muscle, make length that described anchor pole master muscle extend into digging foundation 40 times more than or equal to anchor pole master muscle diameter, pour into described anchor pole then partly around the concrete or the cement mortar of anchor pole master muscle, make describedly to extend into the height of digging foundation more than or equal to 10 centimetres around the concrete of anchor pole master muscle or the end face of cement mortar;
3) partly draw the foundation ditch that digs out digging foundation at the soil layer on the face of land;
4) lay and fixing described digging foundation arrangement of reinforcement, concreting then at digging foundation.
In addition, anchor pole of the present invention basis, footing foundation, board-like greatly, digging foundation are known base form, are usually used in the transmission line of electricity basis.
Fig. 5 is second kind of organigram of composite foundation combining anchor rods with excavation of the present invention, and Fig. 6 is the third organigram of composite foundation combining anchor rods with excavation of the present invention.Wherein, described digging foundation the cross sectional shape of vertical direction be the infundibulate of back-off or rectangle or on bottom side length trapezoidal in the bottom.
Invention has been described according to specific exemplary embodiment herein.It will be conspicuous carrying out suitable replacement to one skilled in the art or revise under not departing from the scope of the present invention.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (5)
1. composite foundation combining anchor rods with excavation, comprise digging foundation (1) and anchor pole basis (2), it is characterized in that: described anchor pole basis (2) is arranged in the rock stratum (II) on the face of land, it comprises at least one cylindrical or polygonal rock bolt (3), described rock bolt (3) has anchor pole master muscle (4) and centers on the concrete or the cement mortar (5) of anchor pole master muscle, and described anchor pole master muscle (4) extend in the digging foundation (1); Described digging foundation (1) is arranged in the soil layer (I) on the face of land, and it is made of arrangement of reinforcement (6) and concrete (7); Described digging foundation (1) is connected by the anchor pole master muscle (4) that extend in the digging foundation with anchor pole basis (2).
2. composite foundation combining anchor rods with excavation as claimed in claim 1 is characterized in that: the length that described anchor pole master muscle (4) extend into digging foundation (1) is more than or equal to 40 times of anchor pole master muscle (4) diameter.
3. composite foundation combining anchor rods with excavation as claimed in claim 1 or 2 is characterized in that: described around anchor pole master muscle concrete or the end face of cement mortar (5) extend into the height h of digging foundation (1) more than or equal to 10 centimetres.
4. as the described composite foundation combining anchor rods with excavation of claim 1-3, it is characterized in that: described digging foundation (1) is the infundibulate of back-off or rectangle or top at the cross sectional shape of vertical direction and is longer than following trapezoidal.
5. job practices as the described composite foundation combining anchor rods with excavation of claim 1-4, construction process is as follows:
1) pore-forming utilizes jumbolter to get out armature boring in the soil layer on the face of land and rock stratum;
2) after pore-forming finishes, put into and fixing described anchor pole master muscle, make described anchor pole master muscle extend into digging foundation length partly 40 times greater than anchor pole master muscle diameter, pour into described anchor pole then partly around the concrete or the cement mortar of anchor pole master muscle, make describedly to extend into the height of digging foundation part greater than 10 centimetres around the concrete of anchor pole master muscle or the end face of cement mortar;
3) partly draw the foundation ditch that digs out the digging foundation part at the soil layer on the face of land;
4) partly lay and fixing described digging foundation part arrangement of reinforcement, concreting then at digging foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100932838A CN101691760B (en) | 2009-09-25 | 2009-09-25 | Composite foundation combining anchor rods with excavation and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100932838A CN101691760B (en) | 2009-09-25 | 2009-09-25 | Composite foundation combining anchor rods with excavation and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101691760A true CN101691760A (en) | 2010-04-07 |
| CN101691760B CN101691760B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100932838A Active CN101691760B (en) | 2009-09-25 | 2009-09-25 | Composite foundation combining anchor rods with excavation and construction method thereof |
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| Country | Link |
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| CN (1) | CN101691760B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147456A (en) * | 2013-03-08 | 2013-06-12 | 中节能风力发电股份有限公司 | Prestressed combination pile structure and construction method thereof |
| CN108019086A (en) * | 2017-12-06 | 2018-05-11 | 浙江飞英电力器材有限公司 | A kind of large bending moment electrical pole and its installation method |
| CN108589759A (en) * | 2018-05-15 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of shaft tower composite foundation |
| CN111576469A (en) * | 2020-04-02 | 2020-08-25 | 国网浙江省电力有限公司湖州供电公司 | Novel power transmission line tower foundation and construction method |
| CN111910671A (en) * | 2020-07-20 | 2020-11-10 | 国网浙江省电力有限公司丽水供电公司 | Prestressed anchor rod combined excavation composite foundation and construction method thereof |
| CN111910670A (en) * | 2020-07-20 | 2020-11-10 | 国网浙江省电力有限公司丽水供电公司 | Assembly type rock anchor rod composite foundation and construction method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000046452A1 (en) * | 1999-02-05 | 2000-08-10 | Northern Technologies, Inc. | Support structure for elevating and supporting monopoles and associated equipment |
| NO311184B1 (en) * | 2000-03-10 | 2001-10-22 | Norsk Miljoekraft As | Method and apparatus for attaching a foundation to the bedrock |
| CN201232193Y (en) * | 2008-07-16 | 2009-05-06 | 钱自力 | Wind motor tower foundation anchor pile structure on rock foundation |
| CN201485863U (en) * | 2009-09-04 | 2010-05-26 | 中国电力工程顾问集团东北电力设计院 | Digging rock bolt compound environment-protection basis |
| CN201495554U (en) * | 2009-09-25 | 2010-06-02 | 中国电力科学研究院 | Anchor bolt combination excavating compound base |
-
2009
- 2009-09-25 CN CN2009100932838A patent/CN101691760B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147456A (en) * | 2013-03-08 | 2013-06-12 | 中节能风力发电股份有限公司 | Prestressed combination pile structure and construction method thereof |
| CN108019086A (en) * | 2017-12-06 | 2018-05-11 | 浙江飞英电力器材有限公司 | A kind of large bending moment electrical pole and its installation method |
| CN108589759A (en) * | 2018-05-15 | 2018-09-28 | 中国电力科学研究院有限公司 | A kind of shaft tower composite foundation |
| CN111576469A (en) * | 2020-04-02 | 2020-08-25 | 国网浙江省电力有限公司湖州供电公司 | Novel power transmission line tower foundation and construction method |
| CN111910671A (en) * | 2020-07-20 | 2020-11-10 | 国网浙江省电力有限公司丽水供电公司 | Prestressed anchor rod combined excavation composite foundation and construction method thereof |
| CN111910670A (en) * | 2020-07-20 | 2020-11-10 | 国网浙江省电力有限公司丽水供电公司 | Assembly type rock anchor rod composite foundation and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101691760B (en) | 2011-07-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20130129 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee after: China Electric Power Research Institute Patentee after: State Grid Corporation of China Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Patentee before: China Electric Power Research Institute |