CN205399438U - Karst area embedded rock pile pore -forming bores concrete dado structure again - Google Patents
Karst area embedded rock pile pore -forming bores concrete dado structure again Download PDFInfo
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- CN205399438U CN205399438U CN201620131146.4U CN201620131146U CN205399438U CN 205399438 U CN205399438 U CN 205399438U CN 201620131146 U CN201620131146 U CN 201620131146U CN 205399438 U CN205399438 U CN 205399438U
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Abstract
The utility model relates to a karst area embedded rock pile pore -forming bores concrete dado structure again, including setting up the subterrane embedded rock pile stake hole in the subterrane and setting up the plain concrete drilling bored concrete pile in coating the soil layer, the stake of plain concrete drilling bored concrete pile directly is greater than embedded rock pile stake hole aperture, the long degree of depth that is nature ground to subterrane top surface of plain concrete drilling bored concrete pile stake. The utility model discloses coating the karst area construction embedded rock pile that the soil layer pore wall easily collapses, using the stake of a dado concrete thin wall section of thick bamboo to form reliable dado structure, improving the stability of pore wall, preventing that hole wall collapse from causing to creep into the pore -forming. The utility model discloses the compound brill concrete dado structure that forms has simple easy operation, reliable and stable, advantages such as perforating efficiency is high, the dado degree of depth is dark, application scope guangZhou, green, can offer reference for the construction of the embedded rock pile pore -forming in the similar stratum.
Description
Technical field
This utility model relates to one and bores concrete dado structure again, the retaining wall being particularly suited on karst area overburden layer position embedded rock pile drilling construction.
Background technology
Along with socioeconomic fast development, the carrying out that urban construction is also just like a raging fire, inevitably carry out engineering construction in karst area.nullBefore constructure body structure is constructed，The construction carrying out building basis is primary link，When must simultaneously meet capability and deformation and controlling to require，Design needs the main foundation form selecting embedded rock pile as high-rise，Now disclosing subterrane, to carry out pile foundation pore-forming inevitable，Owing to bedrock formation existing solution cavity、Solution crack、Lapies or fluid bowl，When embedded rock pile drilling construction discloses subterrane time，Solution cavity、Solution crack、Lapies or fluid bowl and stake holes inside will form communication passage，Once solution cavity、Solution crack、Lapies or fluid bowl filling are incomplete，Moment generation is leaked、Spillage phenomenon，The internal generation of stake holes is caused to bear pore pressure，Cement grout water level declines rapidly，It is arranged in the established stake holes hole wall of overburden layer and can cave in immediately phenomenon due to the retaining wall effect losing cement grout，And then cause surface collapse、Rig topples，Directly injure workmen、The safety of plant equipment，Even if supplementing cement grout to stake holes is internal immediately，Also have little time to stop hole wall collapse.It is therefore prevented that karst area embedded rock pile pore-forming hole wall caves in, improve the stability of embedded rock pile stake holes hole wall, it is proposed to upper overburden layer position embedded rock pile drilling and forming hole retaining wall measure reliable, efficient is the engineering roadblock currently needing solution badly.
Summary of the invention
Problem to be solved in the utility model is to provide a kind of karst area embedded rock pile pore-forming and bores concrete dado structure again, and this dado structure is simple to operation, reliable and stable, pore-forming efficiency is high, the retaining wall degree of depth is deep, applied widely, environmental protection.
Technical solution of the present utility model is: a kind of karst area embedded rock pile pore-forming bores concrete dado structure again, including the subterrane embedded rock pile stake holes being arranged in subterrane and the plain concrete cast-in-situ bored pile being arranged in upper overburden layer, plain concrete Pile footpath is more than embedded rock pile stake holes aperture, and plain concrete Pile length is the nature ground degree of depth to subterrane end face.
Described plain concrete cast-in-situ bored pile is made up of breast wall concrete thin-walled cylinder pile and the coring concrete solid pile being positioned at breast wall concrete thin-walled cylinder pile.
Coring concrete solid pile stake footpath is equal to subterrane embedded rock pile stake holes aperture, and stake is long equal with breast wall concrete thin-walled cylinder pile.
Breast wall concrete thin-walled cylinder pile internal diameter is equal to coring concrete solid pile stake footpath, and wall thickness is 100～300mm.
Plain concrete cast-in-situ bored pile is the cast-in-situ bored pile of the plain concrete perfusion of C15 or C20.
The beneficial effects of the utility model are: the multiple brill concrete dado structure formed by plain concrete cast-in-situ bored pile, embedded rock pile hole wall collapse phenomenon occurs to be effectively prevented on karst area overburden layer position, maintain stablizing of hole wall, substantially increase the reliability of drilling and forming hole.It is applied widely that this bores concrete dado structure again, upper overburden layer for different depth is all applicable, and environmental protection, the coring concrete solid pile taken out uses plant equipment to smash to pieces, the plain concrete disintegrating slag formed can be used for the road hardening of construction site, engineering material reaches recycling, meets the requirement of current green construction technology.
This utility model has the advantages such as simple to operation, reliable and stable, pore-forming efficiency is high, deep, applied widely, the environmental protection of the retaining wall degree of depth, can be that the drilling and forming hole in similar stratum is offered reference.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A section enlarged diagram of Fig. 1.
Fig. 3 is the B-B section enlarged diagram of Fig. 1.
Detailed description of the invention
Referring to Fig. 1-3, this utility model includes plain concrete cast-in-situ bored pile (breast wall concrete thin-walled cylinder pile 1.1, coring concrete solid pile 1.2).Overburden layer, 3 subterranes, 4 embedded rock pile stake holes on 2
A kind of karst area embedded rock pile pore-forming bores concrete dado structure again, it is characterized in that: include the subterrane embedded rock pile stake holes 4 being arranged in subterrane 3 and the plain concrete cast-in-situ bored pile 1 being arranged in overburden layer 2,1 footpath of plain concrete cast-in-situ bored pile more than subterrane embedded rock pile stake holes 4 aperture, the long degree of depth for nature ground to subterrane 3 end face of plain concrete cast-in-situ bored pile 1.
Described plain concrete cast-in-situ bored pile 1 is made up of breast wall concrete thin-walled cylinder pile 1.1 and the coring concrete solid pile 1.2 being positioned at breast wall concrete thin-walled cylinder pile 1.1.
1.2 footpaths of coring concrete solid pile are equal to subterrane embedded rock pile stake holes 4 aperture, and stake is long equal with breast wall concrete thin-walled cylinder pile.Breast wall concrete thin-walled cylinder pile 1.1 internal diameter is equal to 1.2 footpaths of coring concrete solid pile, and external diameter is 1 footpath of plain concrete cast-in-situ bored pile, and wall thickness is 100～300mm, and stake is long, and to be plain concrete Pile long.
This utility model plain concrete cast-in-situ bored pile is the cast-in-situ bored pile of the plain concrete perfusion of C15 or C20.
Enforcement step of the present utility model is: initially with mud off, upper overburden layer 2 carries out the stake holes drilling construction of plain concrete cast-in-situ bored pile, plain concrete Pile footpath is more than subterrane embedded rock pile stake holes 4 aperture, should ensure that breast wall concrete thin-walled cylinder pile wall thickness is at more than 100mm, the long degree of depth for nature ground to subterrane 3 end face of stake (namely going up the degree of depth of overburden layer), adopting backfill slabstone and cohesive soil to process during boring spillage, hole wall must be vertical；Next carries out Di Qing hole, hole, conduit is installed, it is the concrete of C15 or C20 to stake holes internal perfusion strength grade, treat that pile concrete age reaches 3 ~ 7d, use rotary drilling rig to plain concrete cast-in-situ bored pile coring, taking out coring concrete solid pile, the breast wall concrete thin-walled cylinder pile not drilled through forms multiple brill concrete dado structure；Then percussive drill is used to break through Karst roof, conduit is installed, the Concrete Filled solution cavity that strength grade is C15 is irrigated in hole, until concrete surface exceeds basement rock top board face about 1.0m, and then remove conduit, adopt rig tup to impact downwards, if after concrete surface declines, concrete perfusion need to be continued, so repeatedly, until concrete surface no longer declines；Finally, after filling concrete 2 days, can by normal process drilling and forming hole, if running into slight spillage, throwing slabstone, cohesive soil method is adopted to carry out leak stopping, if spillage is serious, repeat perfusion C15 concrete, until after stake holes reaches the hole termination depth of designing requirement, carry out clear hole according to normal construction technique, transfer steel reinforcement cage, conduit be installed, perfusion C40 concrete, be finally completed Pile.
This utility model has the advantage that
(1) simple to operation: the construction technology mature and reliable of plain concrete cast-in-situ bored pile, take out coring concrete solid pile method simple, it is not necessary to use complicated plant equipment, construct very easy.
(2) reliable and stable: breast wall concrete thin-walled cylinder pile wall thickness is at more than 100mm, and the dado structure formed is structural by force, and strength on concrete material is high, and resistance capacity to deformation is strong, substantially increases the stability of hole wall.
(3) drilling efficiency is high: use the multiple brill concrete dado structure that breast wall concrete thin-walled cylinder pile is formed can effectively prevent embedded rock pile hole wall owing to leaking, spillage and phenomenon of caving in, it is to avoid repeatedly fills and creeps into, substantially increases drilling and forming hole efficiency.
(4) the retaining wall degree of depth is deep: this dado structure can maintain the stability of overburden layer rock-embedded pile hole wall, the retaining wall degree of depth is not by the restriction of overlying soil depth, can carrying out retaining wall within the scope of the upper overburden layer of any degree of depth, actual successful case shows, the retaining wall degree of depth of this dado structure is at least up to tens of rice.
(5) applied widely: this dado structure is applicable not only to general stratum, and superstratum loose for soil properties such as karst areas, that be prone to cave in also has the stronger suitability.
(6) environmental protection: the coring concrete solid pile taken out from plain concrete cast-in-situ bored pile can use plant equipment to smash to pieces, the plain concrete disintegrating slag formed can be used for the road hardening of construction site, engineering material reaches recycling, meets the requirement of current green construction technology.
Claims (5)
1. a karst area embedded rock pile pore-forming bores concrete dado structure again, it is characterized in that: include the subterrane embedded rock pile stake holes being arranged in subterrane and the plain concrete cast-in-situ bored pile being arranged in overburden layer, plain concrete Pile footpath is more than embedded rock pile stake holes aperture, and plain concrete Pile length is the nature ground degree of depth to subterrane end face.
2. karst area as claimed in claim 1 embedded rock pile pore-forming bores concrete dado structure again, it is characterised in that: described plain concrete cast-in-situ bored pile is made up of breast wall concrete thin-walled cylinder pile and the coring concrete solid pile being positioned at breast wall concrete thin-walled cylinder pile.
3. karst area as claimed in claim 2 embedded rock pile pore-forming bores concrete dado structure again, it is characterised in that: coring concrete solid pile stake footpath is equal to subterrane embedded rock pile stake holes aperture, and stake is long equal with breast wall concrete thin-walled cylinder pile.
4. karst area as claimed in claim 2 embedded rock pile pore-forming bores concrete dado structure again, it is characterised in that: breast wall concrete thin-walled cylinder pile internal diameter is equal to coring concrete solid pile stake footpath, and wall thickness is 100～300mm.
5. karst area as claimed in claim 1 embedded rock pile pore-forming bores concrete dado structure again, it is characterised in that: plain concrete cast-in-situ bored pile is the cast-in-situ bored pile of the plain concrete perfusion of C15 or C20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620131146.4U CN205399438U (en) | 2016-02-22 | 2016-02-22 | Karst area embedded rock pile pore -forming bores concrete dado structure again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620131146.4U CN205399438U (en) | 2016-02-22 | 2016-02-22 | Karst area embedded rock pile pore -forming bores concrete dado structure again |
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| Publication Number | Publication Date |
|---|---|
| CN205399438U true CN205399438U (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620131146.4U Expired - Fee Related CN205399438U (en) | 2016-02-22 | 2016-02-22 | Karst area embedded rock pile pore -forming bores concrete dado structure again |
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| CN (1) | CN205399438U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577197A (en) * | 2018-11-05 | 2019-04-05 | 中铁二十二局集团轨道工程有限公司 | A kind of construction method of thick sand bed Pile In Karst Area |
| CN112049127A (en) * | 2020-09-21 | 2020-12-08 | 中国五冶集团有限公司 | Pile foundation hole collapse treatment method |
-
2016
- 2016-02-22 CN CN201620131146.4U patent/CN205399438U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577197A (en) * | 2018-11-05 | 2019-04-05 | 中铁二十二局集团轨道工程有限公司 | A kind of construction method of thick sand bed Pile In Karst Area |
| CN112049127A (en) * | 2020-09-21 | 2020-12-08 | 中国五冶集团有限公司 | Pile foundation hole collapse treatment method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20200222 |