CN204589984U - A kind of high-strength displacement pier for composite foundation - Google Patents
A kind of high-strength displacement pier for composite foundation Download PDFInfo
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- CN204589984U CN204589984U CN201520028715.8U CN201520028715U CN204589984U CN 204589984 U CN204589984 U CN 204589984U CN 201520028715 U CN201520028715 U CN 201520028715U CN 204589984 U CN204589984 U CN 204589984U
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Abstract
A kind of high-strength displacement pier for composite foundation of the present utility model, comprising: coarse aggregate bearing stratum; Dryness concrete replacement section, is positioned at above described coarse aggregate bearing stratum, and in shape with wide top and narrow bottom; Sandstone mattress layer, is positioned at the top of described dryness concrete replacement section.The bearing stratum adopting coarse aggregate to form can play good water resistant effect at the bottom of pier; Stage casing adopt dryness concrete can play to around original soil layer (especially pier side original soil layer) pore water adsorb, greatly improve gradually to make the concrete intensity of dryness of having adsorbed pore water, meanwhile, original soil layer around also can because of pore water absorb by dryness concrete, thus intensity is greatly enhanced, and then play complementary beyond thought technique effect.
Description
Technical field
The utility model relates to a kind of high-strength displacement pier for composite foundation.
Background technology
In civil engineering construction, if will process composite foundation, usually first to carry out consolidation process to composite foundation, to improve the intensity of foundation soil, bearing capacity and stability, just can carry out next step construction.Chinese patent literature CN101575848A discloses a kind of method for treating foundation by combined hammers, comprise: 1. smooth location, first discharge pier point by designing requirement, arrange pile-forming machine perching, single pier point first with post hammer alignment point position, rams into predetermined dell, backfill original soil or displacement material are to dell is filled and led up, ram again, then fill out, repeat to ram to ceasing driving standard; 2. filler again, with in hammer ram into predetermined dell, tamping pit backfill original soil or displacement material, to hole is filled and led up, repeat rammer to ceasing driving standard; 3. filler again, with enlarging hammer compacting, completes the construction of this layering operation; 4. ram order by designing requirement, according to 1-3 step, all pier points are constructed complete one by one; 5. construction plant is bulldozed, and completely rams by enlarging hammer whole audience low energy, hammering overlap joint 1/3, and by the compacting of superficial part soil layer, displacement pier is shaping, completes integral construction.
The mode that above-mentioned patent document is rammed by adopting different hammer body to carry out segmentation, make the pier body of final form achieve pier body bearing capacity from top to bottom to reduce gradually, it meets the rule that the compressive stress of usual pier body own decays gradually from top to bottom, finally can solve the technical problem of how to reinforce soft foundation.But the original soil of employing or coarse aggregate, as displacement material, still can make the bearing capacity of the pier body entirety obtained by said method not high.
In prior art; usual meeting adopts the mode of moist filling concrete to realize the pier body had compared with high-bearing capacity in the process making pier body; but; adopt moist filling concrete mode to carry out obtained its manufacture craft of pier body and above-mentioned patent document inconsistent; this is because; moist concrete cannot be rammed due to its soft characteristic, can only pour into.The displacement material adopting on the other hand the cost of its replacing material of mode of moist solidifying property soil perfusion also to record in more above-mentioned patent document is high.
In addition, carrying out in basement process process, if the original soil water content around pier body is higher, the compressive strength of this original soil then can be lower, if by the mode of moist filling concrete, allow moist concrete become dry, then the original soil around pier body will absorb the most of moisture come from concrete, cause original soil water content to increase, compressive strength reduces greatly.And adopt the mode in above-mentioned patent document to carry out the obtained pier body of basement process, because it mainly adopts original soil or coarse aggregate, therefore, moisture cannot be absorbed well from around original soil, cannot solving around well like this, original soil compressive strength is low, finally causes the technical problem little to composite foundation stabilization effect.
Utility model content
It is better that the technical problems to be solved in the utility model is to propose a kind of consolidation effect for composite foundation, and the high-strength displacement pier that the basis become is lower.
For this reason, a kind of high-strength displacement pier for composite foundation of the present utility model, comprising: coarse aggregate bearing stratum; Dryness concrete replacement section, is positioned at above described coarse aggregate bearing stratum, and in shape with wide top and narrow bottom; Sandstone mattress layer, is positioned at the top of described dryness concrete replacement section.
Above-mentioned high-strength displacement pier, also comprises: compacting original soil layer, is positioned at below described coarse aggregate bearing stratum.
Above-mentioned high-strength displacement pier, described dryness concrete replacement section is wedge-shaped segment, it is wedge shape wide at the top and narrow at the bottom, and cross-sectional area is designed to successively decrease from top to down, to make the bearing capacity at same position place require corresponding with compressive stress, and the side surface of described wedge-shaped segment is angled straight lines shape or inclination dentation.
Above-mentioned high-strength displacement pier, the structure of the halfpace of described coarse aggregate bearing stratum is designed so that the bearing capacity of this halfpace structure requires corresponding with the compressive stress bottom described dryness concrete wedge-shaped segment.
Above-mentioned high-strength displacement pier, also comprises the mattress layer be located at above described dryness concrete replacement section and the bed course be located at above described mattress layer, and is located at the board-like spread footing of raft above described bed course.
The utility model has the following advantages relative to prior art tool:
The bearing stratum that a kind of high-strength displacement pier of the present utility model adopts coarse aggregate to form at pedestal can play good water resistant effect at the bottom of pier; Stage casing adopt dryness concrete can play to around original soil layer (especially pier side original soil layer) pore water adsorb, greatly improve gradually to make the concrete intensity of dryness of having adsorbed pore water, meanwhile, original soil layer around also can because of pore water absorb by dryness concrete, thus intensity is greatly enhanced, and then play complementary beyond thought technique effect;
Described dryness concrete replacement section is wedge shape wide at the top and narrow at the bottom, and cross-sectional area is designed to successively decrease from top to down, and to make the bearing capacity at same position place require corresponding with compressive stress, and the side surface of described displacement section is that straight line is skewed.Pier body materials'use can be made more to rationalize, avoid the waste of material and the increase of cost.Adopt the dryness concrete replacement section of wedge shape, and coarse aggregate bearing stratum is set below dryness concrete replacement section, make the design of each several part bearing capacity of pier body meet the pier body compressive stress rule of successively decreasing from top to bottom itself; Wedge structure can well utilize again original soil layer to carry out bracketing to improve bearing capacity to its side; This wedge shape forms the use also allowing displacement to expect and gradually reduces, and reduces cost of manufacture.In addition, the side surface of described displacement section is that angled straight lines shape compares stair-stepping pier body more uniform force; Or, when side surface is that inclination dentation can make side friction increase further, thus reinforced composite ground.
Accompanying drawing explanation
Below in conjunction with Figure of description, embodiment of the present utility model is specifically introduced
Fig. 1 is the structural representation of high-strength displacement pier of the present utility model;
1-coarse aggregate bearing stratum, 2-dryness concrete replacement section, 3-sandstone mattress layer, 4-concrete cushion, the spread footing of 5-raft plate, 6-tamps original soil layer;
Detailed description of the invention
Embodiment 1
As shown in Figure 1, the utility model again discloses a kind of high-strength displacement pier adopting the treatment process of composite foundation of the present embodiment 1 obtained, comprising: coarse aggregate bearing stratum 1, in halfpace shape; Dryness concrete replacement section 2, is positioned at above described coarse aggregate bearing stratum 1.
Described pier body, preferably also comprises: compacting original soil layer 6, is positioned at below described coarse aggregate bearing stratum 1.
The cross-sectional area of described dryness concrete replacement section is designed to successively decrease from top to down, but as a kind of preferred embodiment, described dryness concrete replacement section is wedge-shaped segment, it is wedge shape wide at the top and narrow at the bottom, and cross-sectional area is designed to successively decrease from top to down, to make the bearing capacity at same position place require corresponding with compressive stress, and the side surface of described wedge-shaped segment is angled straight lines shape, or can be inclined teeth shape.
The halfpace structure of described coarse aggregate bearing stratum is designed so that the bearing capacity of halfpace structure requires corresponding with the compressive stress bottom described dryness concrete replacement section.
The pier body of the present embodiment, also comprise the mattress layer be located at above described dryness concrete replacement section and the bed course be located at above described mattress layer, and the board-like spread footing 5 of raft be located at above described bed course, described mattress layer is preferably sandstone mattress layer 3, and described bed course is preferably concrete cushion 4.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (5)
1. a high-strength displacement pier, is characterized in that, comprising:
Coarse aggregate bearing stratum, in halfpace shape;
Dryness concrete replacement section, is positioned at above described coarse aggregate bearing stratum.
2. high-strength displacement pier according to claim 1, is characterized in that, also comprise: compacting original soil layer, is positioned at below described coarse aggregate bearing stratum.
3. high-strength displacement pier according to claim 2, it is characterized in that: described dryness concrete replacement section is wedge-shaped segment, it is wedge shape wide at the top and narrow at the bottom, and cross-sectional area is designed to successively decrease from top to down, to make the bearing capacity at same position place require corresponding with compressive stress, and the side surface of described wedge-shaped segment is angled straight lines shape or inclination dentation.
4. high-strength displacement pier according to claim 3, is characterized in that: the structure of the halfpace of described coarse aggregate bearing stratum is designed so that the bearing capacity of this halfpace structure requires corresponding with the compressive stress bottom described dryness concrete wedge-shaped segment.
5. high-strength displacement pier according to claim 1, is characterized in that: also comprise the mattress layer be located at above described dryness concrete replacement section and the bed course be located at above described mattress layer, and be located at the board-like spread footing of raft above described bed course.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520028715.8U CN204589984U (en) | 2015-01-16 | 2015-01-16 | A kind of high-strength displacement pier for composite foundation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520028715.8U CN204589984U (en) | 2015-01-16 | 2015-01-16 | A kind of high-strength displacement pier for composite foundation |
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| CN204589984U true CN204589984U (en) | 2015-08-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323882A (en) * | 2018-11-23 | 2019-02-12 | 同济大学 | A kind of combination hammer displacement pier pier body sampler |
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2015
- 2015-01-16 CN CN201520028715.8U patent/CN204589984U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323882A (en) * | 2018-11-23 | 2019-02-12 | 同济大学 | A kind of combination hammer displacement pier pier body sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangxi Jiye Science & Technology Co., Ltd. Assignor: Liu Xiangang Contract record no.: 2017360000009 Denomination of utility model: A replacement mound that excels in for composite foundation Granted publication date: 20150826 License type: Exclusive License Record date: 20170906 |
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| EE01 | Entry into force of recordation of patent licensing contract |