CN103993613B - A kind of method that subgrade retaining wall anchorage body is laid - Google Patents
A kind of method that subgrade retaining wall anchorage body is laid Download PDFInfo
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- CN103993613B CN103993613B CN201410255678.4A CN201410255678A CN103993613B CN 103993613 B CN103993613 B CN 103993613B CN 201410255678 A CN201410255678 A CN 201410255678A CN 103993613 B CN103993613 B CN 103993613B
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- anchoring body
- anchoring
- anchor pole
- retaining wall
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Abstract
The invention discloses a kind of method that subgrade retaining wall anchorage body is laid, comprise the following steps: the prefabricated some sections of anchoring bodys of step (1), every section of anchoring body is provided with preformed hole; Step (2), when after roadbed filling to predetermined altitude, instead to be excavated, skyhook; After step (3) rockbolt installation completes, the installation elastic rubber sleeve on anchor pole, the installation of gum sleeve should be arranged on prefabricated anchoring body seam crossing before the anchor pole welding; Prefabricated anchoring body is placed on anchor pole in the mode of breakaway-element by step (4); Step (5) after anchoring body installation, cement injection mortar in the space between anchoring body and anchor pole; After step (6) cement mortar has been poured into, to excavating out backfilled roadbed supported soil, leveling compacting, carries out the making of lower one deck roadbed.The present invention, by contributing to the problem solving anchor Rods In Tied Double Retaining Walls anchoring body easy fracture, lays anchoring body in this way in addition, can save the duration, remarkable in economical benefits.
Description
Technical field
The invention provides a kind of method that subgrade retaining wall anchorage body is laid, belong to field of civil engineering.
Background technology
Along with China's expanding economy, country is increasing in the investment of infrastructure, speedway, high-speed railway project in construction and planned project constantly increase, cultivated area is caused constantly to reduce and land price is more and more higher, take over the land for use and fetch earth more and more difficult, this becomes speedway, a difficult problem of railway construction, a kind of effective ways saving land area and earth fill amount with wall for slope, anchor Rods In Tied Double Retaining Walls is exactly be born under this background, anchor Rods In Tied Double Retaining Walls needs anchor pole to provide enough pulling force to retaining wall, this just needs to ensure that reinforced anchor bolt corrosion can not occur, there is enough intensity, and when retaining wall and the uneven sedimentation of roadbed, under flexural tensile stress effect, anchoring body very easily ruptures, cause contact with moisture anchor pole, make reinforced anchor bolt corrosion, secondly, because the duration is nervous, and cast in situs anchoring body need waste the plenty of time, which results in the contradiction between workmanship and duration.
Anchor Rods In Tied Double Retaining Walls develops on the basis of traditional retaining wall, in view of traditional retaining wall easy overturning under active earth pressure effect, therefore anchor pole is preset in the soil body of retaining wall supporting, rubbed by anchor pole and the soil body and provide the destruction of resisting active earth pressure towards soil body pulling force to retaining wall, the existence of axis force of anchor improves the sideway skid resistance of retaining wall on the one hand, improve the resistance to tipping moment of retaining wall on the other hand, thus make anchor Rods In Tied Double Retaining Walls have more high stability, and then design height can be increased on the basis of traditional retaining wall design maximum height.But for the anchor Rods In Tied Double Retaining Walls at some soft foundations and collapsible loess foundation place, due to the differential settlement of retaining wall and roadbed, anchoring body easily ruptures, the moisture in roadbed is caused to invade reinforced anchor bolt along crack, make corrosion of anchor bolt, even rupture, lose the drawing effect to retaining wall, finally cause the actual effect of retaining wall.
Summary of the invention
The present invention is directed to the problem of anchor Rods In Tied Double Retaining Walls anchoring body easy fracture, construction period anxiety, propose a kind of method that subgrade retaining wall anchorage body is laid.
The present invention adopts technical scheme as follows:
The method that subgrade retaining wall anchorage body is laid, comprises the following steps:
Step (1) prefabricated anchoring body, every section of anchoring body is provided with preformed hole;
Described anchoring body is a cross section is the cylinder of rectangle, and is provided with preformed hole on the axis direction of cylinder.
The every segment length of described anchoring body is 2 ~ 3m;
Described reserved aperture is greater than bolt diameter 2 ~ 3cm;
Step (2), when after roadbed filling to predetermined altitude, instead to be excavated, skyhook;
The weld length of described anchor pole is not less than 4 times of bolt diameters.
After step (3) rockbolt installation completes, installation elastic rubber sleeve on anchor pole, the installation of gum sleeve should (because anchor pole reinforcing bar will reach the length of design before anchor pole welding, if single steel bar curtailment, need to weld other reinforcing bar to reach design length) and be arranged on prefabricated anchoring body seam crossing;
(4) prefabricated anchoring body is placed on anchor pole in the mode of breakaway-element;
Stay the seam that 10cm is long between described two sections adjacent anchoring bodys, the lap length of anchoring body and elastic rubber sleeve is not less than 10cm;
(5) after anchoring body installation, cement injection mortar in the space between anchoring body and anchor pole;
(6) after cement mortar has been poured into, to excavating out backfilled roadbed supported soil, leveling compacting, carries out the making of lower one deck roadbed.
Beneficial effect of the present invention is as follows:
Prefabricated anchoring body, the engineering for some duration anxieties has obvious facilitation, can save about 1 ~ 2 month duration compared to cast in situs anchoring body; Anchoring body is that discontinuous is arranged in addition, exposed reinforcement parcel elastic caoutchouc cover between anchoring body, can effectively avoid rupturing the corrosion of steel bar caused because of anchoring body, ensure that anchor pole provides enough pulling capacities to retaining wall, this subgrade retaining wall build effect for some soft foundations and the yellow figure ground place of settlement by soaking is obvious, effectively can avoid the destruction of differential settlement to anchoring body of retaining wall and roadbed, ensure the stability of retaining wall and the normal operation of road.
Accompanying drawing explanation
The prefabricated anchoring body of Fig. 1;
Fig. 2 anchoring body lays schematic longitudinal section;
In figure: 1 anchoring body, 2 cement mortar, 3 elastic rubber sleeve, 4 reinforced anchor bolts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
The present invention proposes first prefabricated anchoring body, and as shown in Figure 1, anchoring body 1 is a cross section is the cylinder of rectangle, and is provided with preformed hole on the axis direction of cylinder, and the center of anchoring body 1 is provided with the preformed hole running through its axis; After installing until reinforced anchor bolt 4, directly prefabricated anchoring body 1 is installed to precalculated position, bolt portion between two sections of anchoring bodys puts elastic rubber sleeve 3, cement mortar 2 is injected in gap between reinforced anchor bolt 4 and anchoring body 1, as shown in Figure 2, doing so avoids the generation of the problems referred to above, reach the object of saving the duration, ensureing stability of retaining wall.
Concrete steps are as follows:
(1) prefabricated anchoring body 1, every segment length can 2 ~ 3m, and reserved aperture can be greater than reinforced anchor bolt diameter 2 ~ 3cm, and its sectional dimension should meet designing requirement, as shown in Figure 1; Another preparation cement mortar, interspaces in advance for pouring into; Prepare the elastic rubber sleeve that diameter is slightly less than bolt diameter, length is greater than 30cm.
(2) when after roadbed filling to predetermined altitude, instead to excavate, reinforced anchor bolt 4 is installed, ensure that the weld length of reinforcing bar is not less than 4 times of bar diameters.
(3), after rockbolt installation completes, install elastic rubber sleeve 3 at predetermined anchoring body 1 seam crossing, the installation of gum sleeve should before reinforcement welding.
(4) be placed on anchor pole by prefabricated anchoring body 1, stay the seam that 10cm is long between two sections of anchoring bodys, the lap length of anchoring body and elastic rubber sleeve is not less than 10cm.
(5) after anchoring body 1 installation, cement injection mortar in the space between anchoring body 1 and reinforced anchor bolt 4, as shown in Figure 2.
(6) after cement mortar 2 has been poured into, to excavating out backfilled roadbed supported soil, leveling compacting, carries out the making of lower one deck roadbed.
The method, by contributing to the problem solving anchor Rods In Tied Double Retaining Walls anchoring body easy fracture, is laid anchoring body in this way in addition, can be saved the duration, remarkable in economical benefits.
For Jinan-Qingdao certain section at a high speed, effect of the present invention is described: in Jinan-Qingdao certain section of high speed, foundation soil is collapsible loess, but this section of need arrange anchor Rods In Tied Double Retaining Walls, for saving the duration, reduce differential settlement to the destruction of retaining wall anchor pole, adopt the method that this invention provides, prefabricated anchoring body length 2.5m, anchor pole total length 12m, elastic rubber sleeve length 40cm, anchoring body spacing 10cm.Compared with cast in situs anchoring body, save 1 month duration, highway operation is after 6 years, and stability of retaining wall is good, occurs without inclination and fracture phenomenon, and effect is remarkable in this way in institute.
Claims (5)
1. a method for subgrade retaining wall anchorage body laying, is characterized in that, comprise the following steps:
The prefabricated some sections of anchoring bodys of step (1), every section of anchoring body is provided with preformed hole;
Step (2), when after roadbed filling to predetermined altitude, instead to be excavated, skyhook;
After step (3) rockbolt installation completes, anchor pole installs elastic rubber sleeve, the installation of gum sleeve should be arranged on prefabricated anchoring body seam crossing before the anchor pole welding;
(4) prefabricated anchoring body is placed on anchor pole in the mode of breakaway-element;
(5) after anchoring body installation, cement injection mortar in the space between anchoring body and anchor pole;
(6) after cement mortar has been poured into, to the backfilled roadbed supported soil in excavation place, leveling compacting, carries out the making of lower one deck roadbed.
Anchoring body described in step 1 is a cross section is the cylinder of rectangle, and is provided with preformed hole on the axis direction of cylinder.
2. the method for subgrade retaining wall anchorage body laying as claimed in claim 1, it is characterized in that, the every segment length of the anchoring body described in step 1 is 2 ~ 3m.
3. the method for subgrade retaining wall anchorage body laying as claimed in claim 3, it is characterized in that, the reserved aperture described in step 1 is greater than bolt diameter 2 ~ 3cm.
4. the method for subgrade retaining wall anchorage body laying as claimed in claim 1, it is characterized in that, the weld length of the anchor pole described in step 2 is not less than 4 times of bolt diameters.
5. the method laid of subgrade retaining wall anchorage body as claimed in claim 1, is characterized in that, the seam staying 10cm long between two sections described in step 4 adjacent anchoring bodys, the lap length of anchoring body and elastic rubber sleeve is not less than 10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255678.4A CN103993613B (en) | 2014-06-10 | 2014-06-10 | A kind of method that subgrade retaining wall anchorage body is laid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255678.4A CN103993613B (en) | 2014-06-10 | 2014-06-10 | A kind of method that subgrade retaining wall anchorage body is laid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103993613A CN103993613A (en) | 2014-08-20 |
| CN103993613B true CN103993613B (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410255678.4A Expired - Fee Related CN103993613B (en) | 2014-06-10 | 2014-06-10 | A kind of method that subgrade retaining wall anchorage body is laid |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201011B (en) * | 2015-09-18 | 2017-07-25 | 山东大学 | A kind of compound anchored plate retaining wall and its construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000204548A (en) * | 1999-01-14 | 2000-07-25 | Geo Front:Kk | Permanent anchor |
| WO2005098165A1 (en) * | 2004-04-08 | 2005-10-20 | Hong Kong Fiberglass Technology Limited | Instrumented bars and system |
| CN101109180A (en) * | 2007-08-10 | 2008-01-23 | 张立峰 | Concrete anchor stock and construction technique thereof |
| CN201865103U (en) * | 2010-12-09 | 2011-06-15 | 中国水电顾问集团贵阳勘测设计研究院 | Carbon fiber anchor cable device |
| CN202194136U (en) * | 2011-07-21 | 2012-04-18 | 从卫民 | Steel rope-strand cable with expansion head/heads |
| CN202500135U (en) * | 2012-03-31 | 2012-10-24 | 王金宏 | Novel prestressed spiral anchor tube |
| CN103233470A (en) * | 2013-04-18 | 2013-08-07 | 河海大学 | Recyclable anchor rod system for reinforcing joint surfaces of rocky slopes and mounting method of recyclable anchor rod system |
-
2014
- 2014-06-10 CN CN201410255678.4A patent/CN103993613B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000204548A (en) * | 1999-01-14 | 2000-07-25 | Geo Front:Kk | Permanent anchor |
| WO2005098165A1 (en) * | 2004-04-08 | 2005-10-20 | Hong Kong Fiberglass Technology Limited | Instrumented bars and system |
| CN101109180A (en) * | 2007-08-10 | 2008-01-23 | 张立峰 | Concrete anchor stock and construction technique thereof |
| CN201865103U (en) * | 2010-12-09 | 2011-06-15 | 中国水电顾问集团贵阳勘测设计研究院 | Carbon fiber anchor cable device |
| CN202194136U (en) * | 2011-07-21 | 2012-04-18 | 从卫民 | Steel rope-strand cable with expansion head/heads |
| CN202500135U (en) * | 2012-03-31 | 2012-10-24 | 王金宏 | Novel prestressed spiral anchor tube |
| CN103233470A (en) * | 2013-04-18 | 2013-08-07 | 河海大学 | Recyclable anchor rod system for reinforcing joint surfaces of rocky slopes and mounting method of recyclable anchor rod system |
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| Publication number | Publication date |
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| CN103993613A (en) | 2014-08-20 |
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