CN1279247C - Multi-layer assembled steel pipe embedding rock piling method - Google Patents
Multi-layer assembled steel pipe embedding rock piling method Download PDFInfo
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- CN1279247C CN1279247C CN 03146976 CN03146976A CN1279247C CN 1279247 C CN1279247 C CN 1279247C CN 03146976 CN03146976 CN 03146976 CN 03146976 A CN03146976 A CN 03146976A CN 1279247 C CN1279247 C CN 1279247C
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- steel pipe
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Abstract
The present invention relates to a method for piling a multilayer assembled steel pipe embedded in rock. The present invention has following steps that (a) a hole position is arranged, and a driller is used for drilling to a certain depth of a complete rock layer; (b) a multilayer assembled steel pipe is prepared, the preparing method is that the inner part of a steel pipe with larger diameter is sheathed with at least one steel pipe with smaller diameter, and the connecting parts of the steel pipes are staggered; (c) one end of the multilayer assembled steel pipe in the step (b) is inserted to the drilled hole bottom, and the other end of the multilayer assembled steel pipe is fixedly connected with base; (d) the inner part of the multilayer assembled steel pipe in the step (c) is inserted with a reinforcing bar, or a steel rail, or a reinforcing cage; (e) the inner part of the multilayer assembled steel pipe in the step (d) is injected with concrete. The present invention does not need to be added with special equipment, and common miniature steel pipes (the diameter is from 89mm to 300mm) on the market can reinforce the ground foundation. As the multilayer assembled steel pipe embedding rock pile structure is designed, the bearing capacity of the ground foundation is improved. As the connecting parts of the steel pipes are staggered, when load is larger, the present invention can effectively prevent that bend and fractured conditions of the welded joint parts of the miniature steel pipes occur.
Description
Technical field
The present invention relates to the job practices of a kind of Ground Treatment and underpinning, is a kind of method of using the multiple layer combination rock-socketed steel pipe piles to reinforce and handle the structure foundation basis.
Background technology
As everyone knows, building on weak soil or karst ground, because the influence of construction, design and various unfavorable factors in use, be easy to cause the excessive or differential settlement of settlement of building, and cause destroying or the generation of engineering accident such as inclination, promptly [miniature steel pipe castinplace pile and job practices] disclosed job practices is as follows and handle this type of problem such as Chinese patent 95106190:
A. shown in first figure, for determine the position of required boring in a construction location;
B. shown in second figure, for holing in a construction location;
C. by clearing up the hole that this step B is bored;
D. shown in the 3rd figure, by in the hole of being bored a steel pipe being set in this step B;
E. shown in the 4th figure, for cutting the redundance of steel pipe set among this step C;
F. shown in the 5th figure, in the steel pipe after the cutting in this step e a Grouting Pipe being set;
G. be the set Grouting Pipe of this step F of cleaning;
H. shown in the 6th figure, for pouring into a mould slurries in the Grouting Pipe set in this step F;
I. shown in the 7th figure, for adding rubble in the Grouting Pipe set in this step F;
J. shown in the 8th figure, for taking out the Grouting Pipe among this step I;
K. comply with the pile body that last each step construction is formed by maintenance.
Yet, in practice of construction, as constructing according to the step described in this [miniature steel pipe castinplace pile and job practices], following situation often appears:
One, because employed miniature steel pipe in should [miniature steel pipe castinplace pile and job practices], diameter is little, and has only one deck steel pipe, thus this miniature steel pipe the load that can carry limited.
Two,, be the welding of employing outer steel pipe, so when carrying was heavier, its welding point is the situation of often appearance bending, fracture partly owing to refuting between each miniature steel pipe that is somebody's turn to do in [miniature steel pipe castinplace pile and job practices] connects.
In sum, as by should [miniature steel pipe castinplace pile and job practices] constructing, then must be difficult to satisfy the bigger needs of engineering bearing capacity, even may have serious accident potential.
Summary of the invention
The inventor has the ground of two more than ten years to handle and the underpin experience, because the problem that foundation occurs is conscientiously studied intensively practice through the carefulness observation, has multiple layer combination rock-socketed steel pipe piles job practices of the present invention to be born eventually.
The present invention's main purpose is the defective at existing miniature steel pipe cast-in-place pile construction method, and providing a kind of does not need to increase special equipment, and the job practices of the better consolidation effect of tool.
Two of the object of the invention provides a kind of multiple layer combination rock-socketed steel pipe piles job practices, to improve the supporting capacity of its steel pipe.
Three of the object of the invention provides a kind of multiple layer combination rock-socketed steel pipe piles job practices, and to solve when load is big, the welded-joint of steel pipe divides the bending that occurs, the situation of fracture.
For this reason, the present invention is achieved in that a kind of multiple layer combination rock-socketed steel pipe piles job practices, comprises following construction sequence:
(a). hole arranged position, adopt rig boring certain depth to the complete rock stratum;
(b). preparation multilayer steel pipe, the preparation method is for to be inserted in the less steel pipe of at least one diameter in the bigger steel pipe of diameter, and stagger in the coupling part of every layer of steel pipe;
(c). an end of this multilayer steel pipe in the step (b) is inserted to foot of hole, and an other end of this multilayer steel pipe is affixed with the basis;
(d) .. goes into reinforcing bar or rail in the multilayer steel pipe interpolation described in this step (c);
(e). in the multilayer steel pipe described in this step (d), inject concrete.
The present invention adopts above-mentioned job practices, does not need to add special equipment, and only common miniature steel pipe (diameter 89-300MM) just can consolidated subsoil on the need market.Owing to designed multiple layer combination rock-socketed steel pipe piles structure especially, improved the supporting capacity of foundation.Staggering in the coupling part of every layer of steel pipe, has prevented that effectively the welded-joint of miniature steel pipe divides the bending that occurs, the situation of fracture when load is big.
Description of drawings
Fig. 1 determines the schematic diagram of the position of required boring in a construction location for background technology.
Fig. 2 is the schematic diagram of background technology in construction location boring.
Fig. 3 by background technology in the schematic diagram of a steel pipe is set in the hole of brill.
Fig. 4 cuts the schematic diagram of the redundance of this steel pipe for background technology.
Fig. 5 is provided with the schematic diagram of a Grouting Pipe in this steel pipe for background technology.
Fig. 6 is background technology is poured into a mould slurries in this Grouting Pipe a schematic diagram.
Fig. 7 is background technology is added rubble in this Grouting Pipe a schematic diagram.
Fig. 8 takes out the schematic diagram of this Grouting Pipe for background technology.
Fig. 9 determines the schematic diagram of the position of required boring in a construction location for the present invention.
Figure 10 is for being the schematic diagram of the present invention in construction location boring.
Figure 11 is the schematic diagram of layer combined steel pipe more than the present invention.
The specific embodiment
A kind of multiple layer combination rock-socketed steel pipe piles job practices, its construction sequence comprises:
(a). hole arranged position, adopt rig boring to the complete rock stratum about 0.5 meter;
(b) preparation multiple layer combination steel pipe, the preparation method is for to be inserted in the less steel pipe of at least one diameter in the bigger steel pipe of diameter, and stagger in the coupling part of every layer of steel pipe;
(c) end with this multiple layer combination steel pipe in the step (b) is inserted to foot of hole, and an other end of this multiple layer combination steel pipe is affixed with the basis;
(d) in the multiple layer combination steel pipe described in this step (c), insert reinforcing bar or rail;
(e) in the multiple layer combination steel pipe described in this step (d), inject concrete.
With as follows among the present invention by the construction sequence division of multiple layer combination steel pipe 10 reinforcing rock stratum Y:
As Fig. 9 and shown in Figure 10, hole arranged position on the Y of this rock stratum, adopt rig boring construction sequence of certain depth to the complete rock stratum to comprise:
Step 1: the cleaning rock layer surface, and in the definite position that needs boring of correct position, and do down mark M;
Step 2: utilize rig to get out deep hole H in the mark M place described in the step 1;
Step 3: clear up the deep hole H that is bored in this step 2;
As shown in figure 11, when more than preparation the present invention layer of combined steel pipe 10, its construction sequence is:
Prepare bigger outer tube 11 and several connectors 12 of several diameters earlier; Then that several described diameters are bigger outer tube 11 is in turn connected to form a combination outer tube 20 by connector 12 respectively; Then prepare several diameters interior pipe 13 and several connector 14 little than this outer tube 11; Then several described interior pipes 13 are in turn connected to form pipe 30 in the combination by connector 14 respectively; At last pipe in the described combination 30 is inserted in the described combination outer tube 20, and satisfy the staggered up and down condition of tie point B of tie point A and this combination outer tube 20 of pipe 30 in this combination, nationality is combined to form this multiple layer combination steel pipe 10 by pipe 30 in this combination outer tube 20, this combination again; As shown in the figure, the process that is formed this combination outer tube 20 by several these connectors 12 several these outer tubes 11 of connection can be finished by following dual mode:
The first, by finishing being connected between this connector and two steel pipes by welding;
The second, screw in mutually by the screw thread screw thread by being connected between this connector and two steel pipes and to finish.
Claims (4)
1, a kind of multiple layer combination rock-socketed steel pipe piles job practices is characterized in that, described multiple layer combination steel pipe embedding rock job practices comprises following construction sequence:
(a). hole arranged position, adopt rig boring to the complete rock stratum 0.5 meter dark;
(b). preparation multiple layer combination steel pipe, the preparation method is for to be inserted in the less steel pipe of at least one diameter in the bigger steel pipe of diameter, and stagger in the coupling part of every layer of steel pipe;
(c). an end of this multiple layer combination steel pipe in the step (b) is inserted to foot of hole, and an other end of this multiple layer combination steel pipe is affixed with the basis;
(d). in the multiple layer combination steel pipe described in this step (c), insert reinforcing bar, rail or reinforcing cage;
(e). in the multiple layer combination steel pipe described in this step (d), inject concrete.
2, multiple layer combination rock-socketed steel pipe piles job practices as claimed in claim 1 is characterized in that, described step (a) comprising:
Step 1: the cleaning rock layer surface, and in the definite position that needs boring of correct position, and do down mark;
Step 2:. utilize rig to get out 0.5 meter dark hole in the mark place described in the step 1;
Step 3:. clear up 0.5 meter dark hole of being bored in this step 2.
3, multiple layer combination rock-socketed steel pipe piles job practices as claimed in claim 1 is characterized in that, described step (b) comprising:
Step 1:. prepare the bigger steel pipe of several diameters and several connectors;
Step 2: the bigger steel pipe of several diameters with described in the step 1 is in turn connected to form outer tube by this connector respectively;
Step 3: prepare several diameters steel pipe and several connector little than this outer tube;
Step 4: several steel pipes with described in the step 3 are in turn connected to form interior pipe by this connector respectively;
Step 5: outside inserting pipe within described in the step 4 as step 2 described in the pipe, and satisfy the condition that the tie point of the tie point of pipe in this and this outer tube interlocks up and down, nationality is by this outer tube, pipe is combined to form this multiple layer combination steel pipe in this again.
4, multiple layer combination rock-socketed steel pipe piles job practices as claimed in claim 3, it is characterized in that the preparation technology of this multiple layer combination steel tube body screws in mutually to be connected by the welding between this connector and two steel pipes or by the screw thread screw thread and finishes in the described step (b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146976 CN1279247C (en) | 2003-09-27 | 2003-09-27 | Multi-layer assembled steel pipe embedding rock piling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03146976 CN1279247C (en) | 2003-09-27 | 2003-09-27 | Multi-layer assembled steel pipe embedding rock piling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1553003A CN1553003A (en) | 2004-12-08 |
| CN1279247C true CN1279247C (en) | 2006-10-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03146976 Expired - Fee Related CN1279247C (en) | 2003-09-27 | 2003-09-27 | Multi-layer assembled steel pipe embedding rock piling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1279247C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982615A (en) * | 2010-11-08 | 2011-03-02 | 浙江海洋学院 | Stepped anti-subsidence leg of ocean platform |
| CN102943466B (en) * | 2012-11-14 | 2014-07-16 | 中铁十二局集团有限公司 | Construction method for miniature steel pipe concrete pile to penetrate through roadbed layer for reinforcing soft foundation construction |
| CN103031847B (en) * | 2012-12-20 | 2015-05-06 | 长江勘测规划设计研究有限责任公司 | Reducing overlap joint combined type orifice pipe grouting method |
| CN103195114B (en) * | 2013-03-29 | 2015-07-08 | 中国建筑第八工程局有限公司 | High-rise building foundation strengthening construction method on weak geological conditions |
| CN105951749B (en) * | 2016-05-11 | 2018-04-03 | 中国水利水电第十四工程局有限公司 | The construction method of the steel pipe pile reinforced processing of soft damage in a kind of restricted clearance |
| CN108411928A (en) * | 2018-03-22 | 2018-08-17 | 中建桥梁有限公司 | One kind passing through multilayer karst cave ultra-deep and large diameter pile foundation boring method |
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2003
- 2003-09-27 CN CN 03146976 patent/CN1279247C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1553003A (en) | 2004-12-08 |
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Granted publication date: 20061011 Termination date: 20110927 |