CN1029488C - Composite treatment for foundation and piles - Google Patents
Composite treatment for foundation and piles Download PDFInfo
- Publication number
- CN1029488C CN1029488C CN 94103375 CN94103375A CN1029488C CN 1029488 C CN1029488 C CN 1029488C CN 94103375 CN94103375 CN 94103375 CN 94103375 A CN94103375 A CN 94103375A CN 1029488 C CN1029488 C CN 1029488C
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- hole
- stake
- slotted eye
- load dish
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- 239000002131 composite material Substances 0.000 title abstract description 3
- 239000002689 soil Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000004567 concrete Substances 0.000 claims abstract description 11
- 239000004568 cement Substances 0.000 claims description 11
- 238000013036 cure process Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 208000034189 Sclerosis Diseases 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 2
- 238000007596 consolidation process Methods 0.000 claims description 2
- 239000008188 pellet Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 238000007493 shaping process Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a composite treatment method for a foundation and foundation piles, which comprises the hardening treatment to soft soil layers mingled in the foundation, and concrete piles with branches and/or force bearing disks are formed in the foundation. The present invention has the advantages that hard soil layers and the soft soil layers in the foundation can bear force, and the force comprises friction resistance to the piles and acting pressure, namely supporting force, to the peripheries and the bottoms of the piles. In addition, the material strength of the piles can be fully displayed, and therefore, the potential of the piles and the foundation on which the piles act on is greatly activated. The bearing power of the piles is improved, the length, the diameter and the quantity of the piles are decreased, and the piles can be inserted into bearing layers or bedrock without penetrating the soft soil layers.
Description
The present invention relates to support the ground and basis of building.
Tend to run into the ground that is mingled with soft layer in the foundation construction, as shown in fig. 1 soft layer B, D.For this ground, in order to satisfy the requirement of bearing capacity and sedimentation, will be in prior art with soft layer B, the D that passes in the ground as the stake 1 on basis to be mingled with, until embedding bearing stratum or basement rock E.The shortcoming of above-mentioned prior art is that the length of stake is big and will embed basement rock, it constructs complicated, be far from obtaining performance as itself the compressive strength of material of concrete rigid foundation stake, simultaneously as the friction pile that inserts in the ground, no matter be hardpan A, the C in the ground, still the soil body among soft layer B, the D in the ground is that frictional force is all very little to the restraint forces of this foundation pile, and the main dependence of having to of Zhuan bearing capacity is passed bottom soft layer and that be supported on bearing stratum or the basement rock E and born like this.
The object of the present invention is to provide the compounding method of a kind of ground and foundation pile, the potentiality that this method can be given full play to the foundation soil body around foundation pile and the stake make a soil layer of bottom stake side apply higher supporting force and frictional force to stake, thereby significantly improve whole bearing capacity, and reduce the sedimentation on basis.
Above-mentioned purpose of the present invention is to realize by the compounding method of following ground and foundation pile, and this method may further comprise the steps:
(a) soft layer contained in the ground is carried out cure process;
(b) in ground, form vertically stake hole, form branched hole and/or load dish slotted eye, basic material of body of a pile is poured in the above-mentioned stake hole that has branched hole and/or load dish slotted eye at this hole hole wall.
For said method, can and carry out multiple combination to it and carry out at the order of different its step (a) and (b) of geological condition conversion, its mode is specific as follows:
Above-mentioned steps (a) and (b) carry out simultaneously;
Above-mentioned steps (a) can at first be carried out, and carries out step (b) afterwards again.
Above-mentioned steps (b) can at first be carried out, and carries out step (a) afterwards again.
Can adopt step (a) and the mode of (b) carrying out is simultaneously handled to a part of soft layer contained in the ground, carry out step (a) earlier, carry out the mode of step (b) again and handle and another part soft layer contained in the ground adopted.
Can adopt step (a) and the mode of (b) carrying out simultaneously to handle to the contained a part of soft layer of ground, and step (b) is carried out in another part soft layer employing contained in the ground earlier, carry out the mode of step (a) again and handle.
Can adopt the contained a part of soft layer of ground and to carry out step (a) earlier, carrying out the mode of step (b) again handles, carry out step (b) earlier and can adopt, carry out the mode of step (a) again and handle another part soft layer contained in the ground.
Can comprise that in said method pressure pours into the step of fixed slurries.
Above-mentioned pressure grouting can realize like this that promptly all soil of branched hole on the stake hole wall and/or load dish slotted eye is pressed into slurries by the pressure grouting pipe and makes branched hole and/or load dish slotted eye soft soil consolidation and sclerosis on every side.
Above-mentioned pressure grouting also can realize like this, in formed stake hole, pour into cement grout, afterwards the pressure grouting pipe is inserted bottom, stake hole and drop into pellet, make the pile body concrete compaction and cement paste is infiltrated the pile peripheral earth thereby then be pressed into cement paste from the stake bottom with high voltage style by the pressure grouting pipe.
In said method, the cure process in the above-mentioned steps (a) can adopt the mode of high-pressure rotary-spray powder consolidating agent.
In said method, the cure process in the above-mentioned steps (a) can adopt the mode of cement mix.
Above-mentioned step (a) and the mode of (b) carrying out simultaneously can be carried out like this, the reinforcement material that at first in the branched hole of the stake hole wall that forms and/or load dish slotted eye, adds soft layer, thereby as dirt, quarrel soil, flyash, rubble and compacting formation cure process to soft layer around branched hole and/or the load slotted eye, add shapable material afterwards, as clay, thereby that consolidating agent, cement etc. and compacting form is stable, branched hole and/or load dish slotted eye reliably.
At branched hole described in the step (b) of said method and/or load dish slotted eye is that mode by following extrusion soil forms, at first to above-mentioned hole wall to form above-mentioned along side direction branched hole and/or the soil body extruding of the top of load dish slotted eye the displacement of the supreme necromancer body upper end, lower end of this top soil body is reduced gradually, the above-mentioned branched hole and/or the displacement of pushing on lower end to the below soil body that makes this below soil body of the soil body of the below of load dish slotted eye along side direction that will form above-mentioned hole wall increases gradually then.
The side of the soil body forms retaining wall above also can be to this in the soil body above above-mentioned extruding extruded.
The advantage of the forming mode of above branched hole and/or load dish slotted eye is that the above and below soil body of branched hole and/or load dish slotted eye is not to be squeezed simultaneously, can not produce the phenomenon of former come-up like this, utilize aforesaid way to can be made into the private branch hole of following characteristics and/or the former of load dish slotted eye, be characterized in that the plate elder generation of top set in the equipment extrudes laterally, simultaneously side direction soil skirting board is taken out of the slump of side direction soil when preventing to be shaped load dish slotted eye, rotated extrusion with top set's plate laterally for the inferior division plate of naming a person for a particular job again afterwards; Former does not have displacement upwards like this.
In said method, above-mentioned branched hole and/or load dish slotted eye can form by the cutting soil body.
In said method, in step (b), form the vertical stake hole that constitutes by a plurality of sections holes, the cross-sectional area in these a plurality of sections holes increases gradually from end to an end of stake.
In above-mentioned steps, the cross-sectional area in the stake sections hole at formation stake top is big, and the little vertical stake hole of the cross-sectional area in the stake sections hole of stake bottom, and make the cross-sectional area of the lateral branching hole that is positioned on the top stake sections hole and/or load dish slotted eye or length greater than lateral branching hole and/or load dish slotted eye cross-sectional area or length on the following stake sections hole that is adjacent.
Thereby above stake hole formation mode can form waney stake and can bring into play pile shaft material intensity economical with materials more fully, improves bearing capacity.
In said method, formed branched hole and/or load dish slotted eye are located in the soil layer of handling after-hardening.
Above-mentioned soft layer can be handled sclerosis by clamp-oning reinforcement material, and this reinforcement material is dirt, flyash, quarrel soil, rubble or their mixture.
Above-mentioned basic material of body of a pile can be concrete, or the mixture of other rigidity cementing material such as flyash and cement mortar etc.
Can be provided with reinforcing cage in the above-mentioned concrete pile.
In a word, the invention has the advantages that stake relies on earth stress, the length diameter and the quantity of stake can be reduced greatly, have reduced the trouble in the construction that is brought when stake will embed bearing stratum or basement rock, but and economical with materials.
Embodiments of the present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 is the prior art schematic diagram;
Fig. 2 is the schematic diagram of the first embodiment of the present invention;
Fig. 3 is the schematic diagram of the second embodiment of the present invention;
Fig. 4 is the forming process schematic diagram of branched hole of the present invention and/or load dish slotted eye;
Fig. 4 a is the first step schematic diagram;
Fig. 4 b is the second step schematic diagram;
Fig. 4 c is the third step schematic diagram.
As shown in Figure 2, according to the present invention, to carry out cure process to soft layer B, D in the former ground, make its become handled than hardpan B', D', the processing of soft layer B here is to carry out in the load dish slotted eye that forms stake, and it can be cut and be pressed into that cement paste is finished after the native reinforced material again or finish by being pressed into consolidating agent to the grout pipe that inserts load dish slotted eye 4 by being pressed into rubble.Soft layer D reinforces formation than hardpan D' by high-pressure rotary spraying method.Formation forms vertically stake hole after than hardpan D' again, then form load dish slotted eye 3 and branched hole 4 and stake end load dish slotted eye 5, this branched hole 4 can be oblique strip, also can be the lug boss triangular in shape along side direction, and above-mentioned stake end load dish slotted eye 5 is formed to be handled among the soil layer D'.Last concrete perfusion forms the concrete bearing peg that need not embed basement rock E of band branch and load dish, and here stake chassis slotted eye 5 also can be located at above the soil layer D'.
As shown in Figure 3, in ground A, have a soft layer, at first adopt cement it to be handled and form the processing layer B that has a plurality of cement and the native pile that mixes with the technology of soil body mix, on this processing layer B, form the concrete pile 1 of a plurality of band branches and load dish afterwards, its king-pile bottom is positioned at above the above-mentioned processing layer B, and stake 1 need not to pass through former weak soil layer and embeds the requirement that basement rock E just can satisfy bearing capacity and sedimentation like this.
As shown in Figure 4, when forming the stake hole of band branch and load dish, vertical stake hole be shaped at first earlier (as Fig. 4 a), then form top set hole (as Fig. 4 b), form inferior division hole (as Fig. 4 c) with this shaping equipment extruding branched hole below soil body more afterwards with the shaping equipment extruding branched hole top soil body.When making load dish slotted eye, only need the limit, when the anglec of rotation is 360 ℃, just can obtain load dish slotted eye by above-mentioned steps extrusion soil limit rotation shaping equipment.Certainly load dish slotted eye also can form like this, promptly starting a plurality of top sets plate extrusion soils (as opening umbrella) that form a circle that are provided with on the shaping equipment, is that a plurality of inferior division plate extrusion soils that surround-enclose that are provided with on the fulcrum startup shaping equipment so just can form load dish slotted eye needn't revolve shaping equipment or to reduce the mode of rotating its angle apace with top set's plate afterwards.
It should be noted that here soft layer mentioned among the present invention is a relative concept, that is to say that in a certain ground this soft layer is the weak soil layer than hardpan in this ground relatively, and in another ground this soft layer be relatively this ground backbone hardpan than hardpan.
Claims (22)
1, the compounding method of a kind of ground and foundation pile, its step comprises:
(a) soft layer contained in the ground is carried out cure process;
(b) in ground, form vertically stake hole, form branched hole and/or load dish slotted eye, basic material of body of a pile is poured in the above-mentioned stake hole that has branched hole and/or load dish slotted eye at this hole hole wall.
2, method according to claim 1 is characterized in that above-mentioned steps (a) and (b) carries out simultaneously.
3, method according to claim 1 is characterized in that at first carrying out above-mentioned steps (a), carries out above-mentioned steps (b) then.
4, method according to claim 1 is characterized in that at first carrying out above-mentioned steps (b), carries out above-mentioned steps (a) then.
5, method according to claim 1, it is characterized in that a part of soft layer employing step (a) contained in the ground and the mode of (b) carrying out are simultaneously handled, and step (a) is carried out in another part soft layer employing contained in the ground earlier, carry out the mode of step (b) again and handle.
6, method according to claim 1, it is characterized in that adopting step (a) and the mode of (b) carrying out simultaneously to handle to the contained a part of soft layer of ground, and step (b) is carried out in another part soft layer employing contained in the ground earlier, carry out the mode of step (a) again and handle.
7, mode according to claim 1, it is characterized in that the contained a part of soft layer of ground is adopted first step (a), the mode of step (b) is handled again, and another contained in ground soft layer is adopted first step (b), and the mode of step (b) is handled again.
8, mode according to claim 1 is characterized in that also comprising that pressure pours into the step of fixed slurries.
9, mode according to claim 8, it is characterized in that above-mentioned pressure grouting be achieved in that promptly the branched hole on the stake hole wall and/or load dish slotted eye week soil be pressed into slurries by the pressure grouting pipe and make soft soil consolidation and sclerosis around branched hole and/or the load dish slotted eye.
10, method according to claim 8, it is characterized in that above-mentioned pressure grouting is to realize like this, in formed stake hole, pour into cement grout, afterwards the pressure grouting pipe is inserted bottom, stake hole and drop into pellet, make the pile body concrete compaction and make slurries infiltrate stake Zhou Tuzhong thereby then be pressed into cement grout from the stake bottom with high voltage style by the pressure grouting pipe.
11, method according to claim 1 is characterized in that cure process in the above-mentioned steps (a) adopts the mode of high-pressure rotary-spray powder consolidating agent.
12, method according to claim 1 is characterized in that cure process in the above-mentioned steps (a) adopts the mode of cement mix.
13, method according to claim 2, thereby it is characterized in that at first in the branched hole of formed stake hole wall and/or load dish slotted eye, adding the reinforcement material of soft layer and compacting form branched hole and/or load dish slotted eye around the cure process of soft layer, thereby add shapable material afterwards and compacting forms reliable and stable branched hole and/or load dish slotted eye.
14, method according to claim 1, it is characterized in that branched hole described in the above-mentioned steps (b) and/or load dish slotted eye are that mode by following extrusion soil forms, at first to above-mentioned hole wall to form above-mentioned along side direction branched hole and/or the soil body extruding of the top of load dish slotted eye the displacement of the supreme necromancer body upper end, lower end of this top soil body is reduced gradually, the above-mentioned branched hole and/or the displacement of pushing on lower end to the below soil body that makes this below soil body of the soil body of load dish slotted eye below along side direction that will form above-mentioned hole wall increases gradually then.
15, method according to claim 14, it is characterized in that above extruding in the soil body will be to this extruded above the side direction of the soil body form retaining wall.
16, method according to claim 1 is characterized in that above-mentioned branched hole and/or load dish slotted eye form by the cutting soil body.
17, method according to claim 1 is characterized in that forming the vertical stake hole that is made of a plurality of sections holes in step (b), the cross-sectional area in these a plurality of sections holes increases gradually from an end to the other end of stake.
18, method according to claim 17, the stake sections hole cross-sectional area that it is characterized in that forming a top is big, and the little vertical stake hole of stake sections hole cross-sectional area of stake bottom, and make the cross-sectional area of the lateral branching hole that is positioned on the top stake sections hole and/or load dish slotted eye or length greater than lateral branching hole and/or load dish slotted eye cross-sectional area or length on the following stake sections hole that is adjacent.
19, method according to claim 1 is characterized in that formed branched hole and/or load dish slotted eye are located in the soil layer of handling after-hardening.
20, method according to claim 1 is characterized in that above-mentioned basic material of body of a pile is a concrete.
21, method according to claim 20 is characterized in that being provided with reinforcing cage in the formed concrete foundation pile.
22, method according to claim 1 is characterized in that above-mentioned soft layer by clamp-oning reinforcement material processing sclerosis, and this reinforcement material is dirt, flyash, quarrel soil, rubble or their mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94103375 CN1029488C (en) | 1994-04-01 | 1994-04-01 | Composite treatment for foundation and piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94103375 CN1029488C (en) | 1994-04-01 | 1994-04-01 | Composite treatment for foundation and piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093429A CN1093429A (en) | 1994-10-12 |
| CN1029488C true CN1029488C (en) | 1995-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94103375 Expired - Lifetime CN1029488C (en) | 1994-04-01 | 1994-04-01 | Composite treatment for foundation and piles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029488C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514549B (en) * | 2009-04-01 | 2011-05-11 | 东南大学 | Method using intermediate mixing piles for treating three-layer soft foundation |
| CN102966088B (en) * | 2012-11-14 | 2015-04-01 | 河海大学 | Discontinuous combined pile for reinforcing hard soil interlayer-containing soft soil foundation and construction method of discontinuous combined pile |
| CN103469790A (en) * | 2013-09-13 | 2013-12-25 | 山东科技大学 | Skirt-type pedestal pile |
| CN104805827A (en) * | 2015-04-27 | 2015-07-29 | 中铁时代建筑设计院有限公司 | Method for reinforcing flexible plastic or plastic cohesive soil mixed in hard soil layer by high-pressure rotary-spray grouting |
| CN108589757B (en) * | 2018-06-29 | 2023-11-03 | 湖南省第六工程有限公司 | Anti-sedimentation foundation structure |
| CN108797577A (en) * | 2018-07-12 | 2018-11-13 | 上海市城市建设设计研究总院（集团）有限公司 | Crushed stone grouting pile with extruding-enlarging branch tray and its construction method |
| CN109778847B (en) * | 2019-03-20 | 2021-04-09 | 祝波 | Construction method and device of concrete cast-in-place pile |
| CN112049102B (en) * | 2020-09-08 | 2021-06-15 | 广东省水利水电第三工程局有限公司 | Construction method for reinforcing complex stratum by grouting steel pipe pile |
-
1994
- 1994-04-01 CN CN 94103375 patent/CN1029488C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093429A (en) | 1994-10-12 |
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Expiration termination date: 20140401 Granted publication date: 19950809 |