CN1331365A - Pile-forming method by perforating with long screw and pumping concrete - Google Patents
Pile-forming method by perforating with long screw and pumping concrete Download PDFInfo
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- CN1331365A CN1331365A CN 00110560 CN00110560A CN1331365A CN 1331365 A CN1331365 A CN 1331365A CN 00110560 CN00110560 CN 00110560 CN 00110560 A CN00110560 A CN 00110560A CN 1331365 A CN1331365 A CN 1331365A
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- concrete
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- central tube
- spiral
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Abstract
A pile-forming technology for the saturated or unsaturated clay or sandy stratum features that a long-screw drill with central tube is used to drill hole until the destination stratum, a high-pressure pump is then used to pump concrete into the drilled hole via the said central tube, and the drill rod is lifted up while the concrete is pumped into the hole to form a pile. Its advantages include no collapse and diameter decreasing, low noise, no pollution, high efficiency and high pile integrity.
Description
The invention belongs to technical field of buildings, is concrete piling method in a kind of Foundation Design.
At present, a large amount of employing hammerings or vibrating type tube-sinking cast-in-situ pile in the pile foundation engineering of general load, but in saturated soft clay, because immersed tube soil compaction stress to the negative effect of adjacent studs phenomenons such as undergauge, broken pile takes place very easily.Though and common long screw auger drilling deposited pile is a kind of non-soil compaction stake, in the saturated soft soil of phreatic high drilling rod hole wall behind the hole easily cave in, shrinkage cavity, its application is subjected to certain limitation.Improve and next secondary making pile by grouting into technology by long auger, though solved this problem, complex process, work efficiency is lower, is difficult to apply.
The objective of the invention is to provide a kind of undergauge, broken pile, hole wall collapse and shrinkage cavity situation in construction, can avoided to take place, and the simply long spiral pore-forming of technology---pumping of concrete piling method.
The present invention is realized by following steps:
Employing has the long-spiral drilling machine of central tube to carry out drilling construction, and behind the layer of waiting to achieve the goal, with in the central tube injection hole of concrete by long-spiral drilling machine that mixes, the limit is carried and bored the limit infusion up to finishing pile then with the high pressure concrete delivery pump.
Wherein, the rate of penetration 1-2m/min of rig, the hoisting velocity 1-1.5m/min of rig, concrete transporting velocity 1-1.5m/min, the concrete slump is 180-220mm, the maximum particle diameter＜32mm of concrete coarse aggregate.
The inventive method suits to construct under saturated, unsaturation clay and geological conditionss such as loam or sand bed, has low noise, pollution-free, high efficiency and the complete characteristics of pile body.Through 10 meters noise measuring maximum noises less than 50 decibels.Because of it does not use mud, environmentally safe, comparing with the high-pressure slip-casting stake has its unique advantage.This process is to pour into disposable finishing from creeping into to, and the mechanization degree height can improve efficiency of construction greatly.As the construction of non-soil compaction stake, fully guaranteed the integrality of pile body, and can construct general foundation pile, lagging pile, compound foundation pile or the like.
Below provide the specific embodiment of the invention:
Adopt ZKL800 type super large stride long-spiral drilling machine, be transported to and specify the stake position, centering makes equipment maintenance level, and drilling tool is the vertical state.Start rig, loosening hoist rope begins to creep into, speed remains 1.5m/min, when being drilled into 8 meters of desired depths, stop to bore, and on carry 0.2 meter of drilling tool, start concrete pump, in the central tube injection hole of concrete with the maximum particle diameter＜32mm of the coarse aggregate that mixes, carry drilling tool limit pumping of concrete on the limit, wherein the hoisting velocity 1.2m/nin of rig by long-spiral drilling machine, concrete transporting velocity 1.2m/min, concrete spouting finishes to remove drilling tool.If pile foundation need be provided with reinforcing cage, reinforcing cage can be inserted down in the concrete after the perfusion, if when situation not in place down occurring, available cover-plate type vibrator will reinforcing cage down to assigned address.
Claims (1)
1, a kind of long spiral pore-forming---pumping of concrete piling method, it is characterized in that: adopting has the long-spiral drilling machine of central tube to carry out drilling construction, wait to achieve the goal behind the layer, with the high pressure concrete delivery pump with in the central tube injection hole of concrete that mixes by long-spiral drilling machine, the limit is carried and is bored the limit infusion up to finishing pile then, wherein, rate of penetration 1-the 2m/min of rig, hoisting velocity 1-the 1.5m/min of rig, concrete transporting velocity 1-1.5m/min, the concrete slump is 180-220mm, the maximum particle diameter＜32mm of concrete coarse aggregate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110560 CN1331365A (en) | 2000-06-22 | 2000-06-22 | Pile-forming method by perforating with long screw and pumping concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110560 CN1331365A (en) | 2000-06-22 | 2000-06-22 | Pile-forming method by perforating with long screw and pumping concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1331365A true CN1331365A (en) | 2002-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110560 Pending CN1331365A (en) | 2000-06-22 | 2000-06-22 | Pile-forming method by perforating with long screw and pumping concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1331365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444116A (en) * | 2011-10-31 | 2012-05-09 | 山东鸿泰建设集团有限公司 | Construction waste regenerated aggregate concrete pile and soil foundation treatment method thereof |
| CN102535445A (en) * | 2012-02-07 | 2012-07-04 | 陕西桩鑫建设工程有限公司 | Molding device and molding method for long spiral extruding rock-entering cast-in-place pile |
-
2000
- 2000-06-22 CN CN 00110560 patent/CN1331365A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444116A (en) * | 2011-10-31 | 2012-05-09 | 山东鸿泰建设集团有限公司 | Construction waste regenerated aggregate concrete pile and soil foundation treatment method thereof |
| CN102535445A (en) * | 2012-02-07 | 2012-07-04 | 陕西桩鑫建设工程有限公司 | Molding device and molding method for long spiral extruding rock-entering cast-in-place pile |
| CN102535445B (en) * | 2012-02-07 | 2013-09-04 | 陕西桩鑫建设工程有限公司 | Molding device and molding method for long spiral extruding rock-entering cast-in-place pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |