CN103898918A - Combined supporting structure and construction method - Google Patents
Combined supporting structure and construction method Download PDFInfo
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- CN103898918A CN103898918A CN201410163406.1A CN201410163406A CN103898918A CN 103898918 A CN103898918 A CN 103898918A CN 201410163406 A CN201410163406 A CN 201410163406A CN 103898918 A CN103898918 A CN 103898918A
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Abstract
Provided are a combined supporting structure and a construction method. The combined supporting structure comprises mixing piles and prefabricated reinforced concrete support piles, and is characterized in that the mixing piles are connected in a closely arranged and lap joint mode, each prefabricated reinforced concrete support pile is rectangular or inverted-T-shaped and comprises an upper segment pile body and a lower segment pile body, a main reinforcing bar of each upper segment pile body is longitudinally arranged on one side, close to a foundation pit, of the upper segment pile body, a main reinforcing bar of each lower segment pile body is arranged on one side opposite to the side where the main reinforcing bar of the corresponding upper segment pile body is arranged, the upper segment pile bodies and the lower segment pile bodies are spliced reversely and vertically in the middles, the inside of each mixing pile is provided with one prefabricated reinforced concrete support pile or the prefabricated reinforced concrete support piles are arranged in the mixing piles every other mixing pile, the depth of the mixing piles in soil is smaller than that of the prefabricated reinforced concrete support piles. The rectangular or inverted-T-shaped prefabricated piles are adopted to be combined with the reverse pile splicing process, pile manufacturing cost is low, the steel amount is less, and manufacturing cost is reduced substantially.
Description
Technical field
The present invention relates to geotechnical engineering field, relate in particular to the deep foundation pit supporting structure of soft clay area.
Background technology
In soft clay area, because the impervious coefficient of mucky soil is little, can adopt the phase direct supporting of soldier pile across a certain distance, and without taking leakproof, seepage control measure, but in silty clay area, must adopt cement mixing pile or rotary churning pile to carry out sealing and leakproof soil.Traditional preformed pile is because soil compaction is serious, the stake field fabrication construction period is long, seldom use, though and non-soil compaction of bored pile but cross section bending resistance stressed unreasonable, cost is high, mud blowdown affects environment, difficult quality control, in SWM engineering method, H shaped steel cross section is can choice little in addition, and large on surrounding enviroment impact when pile pulling, also seldom uses in long in time limit, pipeline City Regions.The construction method of the disclosed a kind of cement mixing pile of patent 200710068309.4 and the stake of prefabricated reinforced concrete lateral force resistance, replace the H steel in SMW engineering method with reinforced concrete pile, principle is simple, early just there is abroad application case, but it selects a type is T shape or I shape, and crucial pile joint is not carried out further open, and T shape described in it or I-shaped stake, adopt mould single prefabricated, hang in maintenance in curing pool, this manufacturing process investment is large, work efficiency is low, and stake type complexity, distributing bar steel using amount is large, and main muscle adopts two-sided arrangement of reinforcement, the manufacturing speed of the high stake of cost of stake is difficult to meet construction speed requirement, agitation pile is as water-stop curtain in addition, its degree of depth only need enter foundation ditch certain depth, without arranging with dark with soldier pile.A kind of without pile pulling, without mud emission, stake is easily manufactured, cost is low replaces combined support structure and the construction method of H shaped steel have not been reported with binodal preformed pile.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency of above-mentioned prior art, provide a kind of without pile pulling, without mud emission, stake is easily manufactured, cost is low replaces combined support structure and the construction method of H shaped steel with binodal preformed pile.
According to a kind of combined support structure provided by the invention, comprise agitation pile and prefabricated reinforced concrete soldier pile, described agitation pile solid matter overlap joint is connected, described prefabricated reinforced concrete soldier pile is rectangle or inverted T-shaped, prefabricated reinforced concrete soldier pile comprises epimere stake and hypomere stake, the main muscle of epimere stake longitudinally arranges by foundation ditch one side in stake, the main muscle of hypomere stake is in a side setting contrary to the main muscle of epimere stake, epimere stake and hypomere stake are at oppositely pile extension of vertical middle part, steel bar concrete soldier pile is at every or arrange in an agitation pile, and the lower native degree of depth of described agitation pile is shallower than steel bar concrete soldier pile.
Also there is following attached technical characterictic according to a kind of combined support structure provided by the invention:
Described steel bar concrete soldier pile top or upper-end part of driving are provided with cast-in-situ reinforced concrete grit in foundation ditch one side.
The epimere stake lower end of described steel bar concrete soldier pile and hypomere stake upper end are all embedded with shaped steel built-in fitting, two built-in fitting welded connections or with the welded connection of steel plate or angle steel overlap joint.
The rectangular pile of described prefabricated reinforced concrete soldier pile is longitudinally interval with through hole, has crossed shearing-resistant member in through hole, and shearing-resistant member stretches out a side certain length.
The shaped steel built-in fitting of described steel bar concrete soldier pile is inclined mouth type built-in fitting, inclined mouth type built-in fitting comprises pile extension angle steel, anti-shear steel plate bar, connects steel plate and anchor bar, anti-shear steel plate bar length is coupled between pile extension angle steel to weldering, connecting the weldering of steel plate short is coupled between pile extension angle steel, anchor bar is U-shaped, and two is welded respectively and is associated on corresponding pile extension angle steel.
The shaped steel built-in fitting of described steel bar concrete soldier pile is step built-in fitting, step built-in fitting comprises pile extension angle steel, bending resistance angle steel, anti-shear steel plate, connect steel plate and anchor bar, described pile extension angle steel is located at peripheral four jiaos, described bending resistance angle steel is located between pile extension angle steel, described anti-shear steel plate comprises, in, Xia San road horizontal bar steel plate, the weldering of bar steel plate is coupled to the outside of pile extension angle steel and bending resistance angle steel, described anchor bar weldering is coupled to the lower end of pile extension angle steel, the pile extension angle steel upper end of described step pile extension built-in fitting one side flushes with bending resistance angle steel, the pile extension angle steel top of opposite side is lower than bending resistance angle steel certain altitude.
According to the construction method of a kind of combined support structure provided by the invention, construction according to the following steps:
A, with mixing pile machine construction agitation pile slip casting
B, insert hypomere stake and by a support clamp section of staying with loop wheel machine
C, lifting epimere stake and with hypomere stake Jointing
D, removal support, sink to stake at the bottom of agitation pile
E, the soldier pile basseting is depressed into design elevation with vibrating hammer and pile follower bar
According to a kind of combined support structure provided by the invention and construction method compared with prior art tool have the following advantages:
1, the rectangle or the oppositely pile extension technology of inverted T-shaped preformed pile combination that adopt one-way reinforcement, stake cost of manufacture is low, steel using amount is economized, and cost significantly reduces.
2, solid matter agitation pile sealing performance is good, and can greatly simplify process for sinking, piling cost, and speed of application is accelerated.
3, the supporting and protection structure that adopts inverted T-shaped preformed pile to be combined with agitation pile, easily forms native arching action, prevents cement-soil displacement, can widen the pilespacing of preformed pile simultaneously, gives full play to the advantage that preformed pile bending resistance is strong, can further reduce cost.
Accompanying drawing explanation
Fig. 1 is composition diagram of the present invention
Fig. 2 is A-A sectional drawing of the present invention
Fig. 3 is B-B sectional drawing of the present invention
Fig. 4 is pile extension elevation of the present invention
Fig. 5 is epimere soldier pile C-C sectional drawing of the present invention
Fig. 6 is pile extension step built-in fitting of the present invention
Fig. 7 is pile extension inclined mouth type built-in fitting of the present invention
Fig. 8 is pile sinking of the present invention and pile connection construction process schematic representation
The specific embodiment
Referring to Fig. 1 to Fig. 8, in a kind of combined support structure provided by the invention and construction method, comprise agitation pile 1 and prefabricated reinforced concrete soldier pile 2.Described agitation pile 1 solid matter overlap joint is connected, described prefabricated reinforced concrete soldier pile 2 is rectangle or inverted T-shaped, comprise epimere stake 21 and hypomere stake 22, the main muscle of epimere stake 21 longitudinally arranges by foundation ditch one side in stake, the main muscle of hypomere stake 22 is in a side setting contrary to epimere stake, and epimere stake 21 and hypomere stake 22 be the reverse pile extension at middle part vertically.Prefabricated reinforced concrete soldier pile 2 inserts in agitation pile 1 and every or every an agitation pile setting.Prefabricated reinforced concrete soldier pile 2 is born the moment of flexure that soil pressure produces, and agitation pile 1 is for sealing and leakproof soil, and agitation pile 1 can also plant stake for preformed pile 2 drilling function is provided, and has saved piling machinery; Preformed pile is planted a process without soil compaction in addition, can not exert an influence to surrounding enviroment.Inverted T-shaped stake and agitation pile interlocking are strong, easily form native arching action, and agitation pile can be effectively passed to soil pressure in bending resistance stake; Epimere stake 21 adopts asymmetric reinforcement manner with hypomere stake 22, and adopts reverse pile extension, and the bending moment envelope diagram of arrangement of reinforcement direction and soldier pile is matched; Soldier pile can arrange according to calculating in one or every agitation pile, and the present embodiment be every root setting, a long prefabricated reinforced concrete soldier pile 2 that is shorter than in lower end of described agitation pile 1.More shallow agitation pile just can meet impervious and leakproof soil requirement, therefore, as in conjunction with pile pressing technology, can reduce agitation pile stake long, saving construction cost.
Referring to Fig. 1, in the above-described embodiment providing in the present invention, described steel bar concrete soldier pile 2 tops and upper end are positioned at foundation ditch one side and are provided with cast-in-situ reinforced concrete beam 3.Cast-in-situ reinforced concrete beam 3 unifies prefabricated reinforced concrete soldier pile, makes it jointly stressed, the power transmitting is passed to simultaneously supports on 6 from soldier pile.
Referring to Fig. 1, Fig. 4, Fig. 6, Fig. 7, in the above-described embodiment providing in the present invention, epimere stake 21 lower ends of described prefabricated reinforced concrete soldier pile 2 and hypomere stake 22 upper ends are all embedded with 23, the two built-in fitting welded connections of shaped steel built-in fitting or with the welded connection of steel plate or angle steel overlap joint.Shaped steel built-in fitting 23 can guarantee that pile extension is convenient, size is accurate, power transmission is reliable, particularly can transmit larger shearing, is coupled to overall stake simultaneously and also can bears certain bending moment in joint.
Referring to Fig. 2, Fig. 3, in the above-described embodiment providing in the present invention, described prefabricated reinforced concrete soldier pile 2 is longitudinally interval with through hole 24, has crossed shearing-resistant member 25 in through hole, and shearing-resistant member 25 stretches out certain length between stake.Between rectangular pile and agitation pile, frictional force is little, and power is transmitted poor performance, establishes shearing-resistant member in through hole, can greatly improve its globality and power and transmit performance.
Referring to Fig. 6, Fig. 7, in the above-described embodiment providing in the present invention, the inclined mouth type built-in fitting 23 of described soldier pile comprises pile extension angle steel 231, anti-shear steel plate bar 235, connects steel plate 233 and anchor bar 234, anti-shear steel plate bar 235 is long is coupled to 231, pile extension angle steel to weldering, connect steel plate 233 short welderings and be coupled to 231, pile extension angle steel, anchor bar 234 is U-shaped, and two is welded respectively and is associated on corresponding pile extension angle steel.The step built-in fitting 23 of described soldier pile comprises pile extension angle steel 231, bending resistance angle steel 232, anti-shear steel plate 235, connects steel plate 233 and anchor bar 234; Pile extension angle steel 231 is located at peripheral four jiaos, bending resistance angle steel 232 is located between pile extension angle steel, anti-shear steel plate 235 comprises upper, middle and lower three road horizontal bar steel plates, and the weldering of bar steel plate is coupled to the outside of pile extension angle steel 231 and bending resistance angle steel 232, and anchor bar 234 welderings are coupled to the lower end of pile extension angle steel 231; Pile extension angle steel 231 upper ends of step pile extension built-in fitting one side flush with bending resistance angle steel 232, and pile extension angle steel 231 tops of opposite side are lower than bending resistance angle steel 232 certain altitudes.After four jiaos of angle steel weldering connection of shaped steel built-in fitting, can bear certain moment of flexure, and horizontal steel plate and tiltedly steel plate are mainly born shearing, U-shaped dowel anchoring property is good, can unify with pile body concrete.
Referring to Fig. 8, in the above-described embodiment providing in the present invention, described combined support structure is to construct according to the following steps: A, with mixing pile machine construction agitation pile 1; B, insert hypomere stake 22 and clamp hypomere stake 22 with support 5 with loop wheel machine 4; C, lifting epimere stake 21 and with hypomere stake 22 Jointings; D, removal support 5, sink to whole pile; E, the soldier pile basseting is depressed into design elevation with vibrating hammer and pile follower bar.The construction technology of piling again after adopting agitation pile drilling pile and planting stake, easy construction, speed of application are fast, and little on surrounding enviroment impact, operating expenses is low.
Claims (7)
1. a combined support structure, comprise agitation pile and prefabricated reinforced concrete soldier pile, it is characterized in that described agitation pile solid matter overlap joint is connected, described prefabricated reinforced concrete soldier pile is rectangle or inverted T-shaped, prefabricated reinforced concrete soldier pile comprises epimere stake and hypomere stake, the main muscle of epimere stake longitudinally arranges by foundation ditch one side in stake, the main muscle of hypomere stake is in a side setting contrary to the main muscle of epimere stake, epimere stake and hypomere stake are at oppositely pile extension of vertical middle part, steel bar concrete soldier pile is at every or arrange in an agitation pile, and the lower native degree of depth of described agitation pile is shallower than steel bar concrete soldier pile.
2. combined support structure as claimed in claim 1, is characterized in that described steel bar concrete soldier pile top or upper-end part of driving are provided with cast-in-situ reinforced concrete grit in foundation ditch one side.
3. combined support structure as claimed in claim 1, is characterized in that the epimere stake lower end of described steel bar concrete soldier pile and hypomere stake upper end are all embedded with shaped steel built-in fitting, two built-in fitting welded connections or with steel plate or the welded connection of angle steel overlap joint.
4. combined support structure as claimed in claim 1, is characterized in that the rectangular pile of described prefabricated reinforced concrete soldier pile is longitudinally interval with through hole, has crossed shearing-resistant member in through hole, and shearing-resistant member stretches out a side certain length.
5. combined support structure as claimed in claim 1, the shaped steel built-in fitting that it is characterized in that described steel bar concrete soldier pile is inclined mouth type built-in fitting, inclined mouth type built-in fitting comprises pile extension angle steel, anti-shear steel plate bar, connects steel plate and anchor bar, anti-shear steel plate bar length is coupled between pile extension angle steel to weldering, connecting the weldering of steel plate short is coupled between pile extension angle steel, anchor bar is U-shaped, and two is welded respectively and is associated on corresponding pile extension angle steel.
6. combined support structure as claimed in claim 1, the shaped steel built-in fitting that it is characterized in that described steel bar concrete soldier pile is step built-in fitting, step built-in fitting comprises pile extension angle steel, bending resistance angle steel, anti-shear steel plate, connect steel plate and anchor bar, described pile extension angle steel is located at peripheral four jiaos, described bending resistance angle steel is located between pile extension angle steel, described anti-shear steel plate comprises, in, Xia San road horizontal bar steel plate, the weldering of bar steel plate is coupled to the outside of pile extension angle steel and bending resistance angle steel, described anchor bar weldering is coupled to the lower end of pile extension angle steel, the pile extension angle steel upper end of described step pile extension built-in fitting one side flushes with bending resistance angle steel, the pile extension angle steel top of opposite side is lower than bending resistance angle steel certain altitude.
7. a construction method for combined support structure, is characterized in that constructing according to the following steps:
A, with mixing pile machine construction agitation pile slip casting
B, insert hypomere stake and by a support clamp section of staying with loop wheel machine
C, lifting epimere stake and with hypomere stake Jointing
D, removal support, sink to stake at the bottom of agitation pile
E, the soldier pile basseting is depressed into design elevation with vibrating hammer and pile follower bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163406.1A CN103898918A (en) | 2014-04-22 | 2014-04-22 | Combined supporting structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410163406.1A CN103898918A (en) | 2014-04-22 | 2014-04-22 | Combined supporting structure and construction method |
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| CN103898918A true CN103898918A (en) | 2014-07-02 |
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| CN201410163406.1A Pending CN103898918A (en) | 2014-04-22 | 2014-04-22 | Combined supporting structure and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862856A (en) * | 2016-05-18 | 2016-08-17 | 江苏鼎达建筑新技术有限公司 | Reinforced concrete support pile and pile splicing structure thereof |
| CN111779025A (en) * | 2020-06-19 | 2020-10-16 | 中国一冶集团有限公司 | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method |
| CN112922014A (en) * | 2021-04-09 | 2021-06-08 | 中信国安建工集团有限公司 | Continuous multi-span plant foundation structure and construction method |
| CN113882654A (en) * | 2021-10-27 | 2022-01-04 | 中国建筑第八工程局有限公司 | Wall connecting device capable of being buckled with outer scaffold through turnover disc |
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| CN101078216A (en) * | 2007-04-25 | 2007-11-28 | 严平 | Method for embedding cement purdah into prefabricated reinforced concrete anti-lateral-force pile |
| CN201031389Y (en) * | 2007-04-25 | 2008-03-05 | 严平 | Prefabricated reinforced concrete T shaped I-shaped anti-side-force pile |
| CN101570968A (en) * | 2008-12-15 | 2009-11-04 | 安徽省建设工程勘察设计院 | Combination stiffening filling pile |
| CN103205974A (en) * | 2013-04-17 | 2013-07-17 | 杨众 | Supporting structure with combination of preheated groove-shaped piles and mixing piles |
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2014
- 2014-04-22 CN CN201410163406.1A patent/CN103898918A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078216A (en) * | 2007-04-25 | 2007-11-28 | 严平 | Method for embedding cement purdah into prefabricated reinforced concrete anti-lateral-force pile |
| CN201031389Y (en) * | 2007-04-25 | 2008-03-05 | 严平 | Prefabricated reinforced concrete T shaped I-shaped anti-side-force pile |
| CN101570968A (en) * | 2008-12-15 | 2009-11-04 | 安徽省建设工程勘察设计院 | Combination stiffening filling pile |
| CN103205974A (en) * | 2013-04-17 | 2013-07-17 | 杨众 | Supporting structure with combination of preheated groove-shaped piles and mixing piles |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862856A (en) * | 2016-05-18 | 2016-08-17 | 江苏鼎达建筑新技术有限公司 | Reinforced concrete support pile and pile splicing structure thereof |
| CN111779025A (en) * | 2020-06-19 | 2020-10-16 | 中国一冶集团有限公司 | In-situ protection structure crossing foundation pit municipal pipe network box culvert and construction method |
| CN112922014A (en) * | 2021-04-09 | 2021-06-08 | 中信国安建工集团有限公司 | Continuous multi-span plant foundation structure and construction method |
| CN113882654A (en) * | 2021-10-27 | 2022-01-04 | 中国建筑第八工程局有限公司 | Wall connecting device capable of being buckled with outer scaffold through turnover disc |
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Address after: Jiangdong District Baizhang road 315000 in Zhejiang province Ningbo City Exhibition Center No. 168 28C Applicant after: Yang Zhong Applicant after: Yang Feng Address before: 315000 Zhejiang city of Ningbo province Yinzhou District South Street Tai Hui Lane 99, building 1505 Jian Chen Applicant before: Yang Zhong Applicant before: Yang Feng |
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Application publication date: 20140702 |
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