CN103334451A - Underneath-passing channel formed between high-speed rail piers through secant pile walls and method thereof - Google Patents
Underneath-passing channel formed between high-speed rail piers through secant pile walls and method thereof Download PDFInfo
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- CN103334451A CN103334451A CN2013102877583A CN201310287758A CN103334451A CN 103334451 A CN103334451 A CN 103334451A CN 2013102877583 A CN2013102877583 A CN 2013102877583A CN 201310287758 A CN201310287758 A CN 201310287758A CN 103334451 A CN103334451 A CN 103334451A
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Abstract
The invention discloses an underneath-passing channel formed between high-speed rail piers through secant pile walls and a method thereof. According to the method, firstly, two parallel and symmetrical guide girders are constructed on a flat land between the high-speed rail piers, each guide girder is used as a work platform, and an all casting drill and the super-delayed-coagulation type concrete technology are used for constructing a pile A and a pile B from the guide girders in an alternating mode from front to back in the direction perpendicular to a rail to form the secant pile walls. Then, cross arms and bottom plates are arranged, and finally a closed square-shaped entire supporting structure is formed, and the underneath-passing channel is formed. According to the construction method, the piers can not be pressed in a bias mode due to elimination of soil bodies in the channel, and meanwhile a high-speed rail bridge pile foundation soil body is damaged. Therefore, loss of soil body frictional resistance of the high-speed rail pile foundation soil body can be avoided, and foundation bearing capacity can not be affected.
Description
Technical field
The present invention relates to the Extra-Deep Foundation Pit technical field of structures, be specifically related to utilize the interlock stake to form down break-through road and method thereof between a kind of high ferro bridge.
Background technology
Continuous increase along with the high ferro operating line, the high ferro transportation network progressively forms, the situation of excavating formation flood discharge or traffic aisle between high-speed railway two pier footings is more and more runing, and has following problem but excavate the formation passage between operation high-speed railway two pier footings:
1, influence the normal operation of high ferro, the passage construction process easily influences the high ferro safe operation;
May destroy bridge pier structure safety when 2, next-door neighbour's bridge pier excavates, refer to that mainly the supporting capacity of pile foundation and the rigidity of bridge pier are affected because of excavation;
3, the bridge headroom is limited, and the working space that provides under the beam is not suitable for large-scale engineering machinery and moves into construction;
4, may form unbalance loading to bridge pier in the work progress, mainly refer to excavate and side direction unbalanced pressure that preloading forms;
5, do not reach effective protection after passage forms, make current infiltrate the abutment soil body by space enclosing structure, influence the ground performance of the soil body arround the abutment.
Excavation forms passage between operation high-speed railway two pier footings, does not still have mature technique scheme or engineering measure at present at home.The general engineering proposal that adopts jacking framework (with native jacking) in similar engineering, but jacking framework scheme work progress complexity, the engineering scale of construction are big.This scheme needs the foundation ditch of construction jacking earlier, and jacking reserve and slideway are installed, and (such as silt clay, sand etc.) are prone to the soil body and cave in when jacking is fetched earth under the relatively poor situation of geological conditions, directly influence bridge pier and use safety.
Often ran into the engineering problem in the other deep pit excavation of adjacent existing building in recent years in the city underground construction, interlock stake Extra-Deep Foundation Pit structure has obtained the good engineering effect." all casing drill+super retardation setting type concrete " worker's method is adopted in boring interlock stake, and the plant equipment volume is little, can transplant the method that the interlock stake is gone along with sb. to guard him between operation high-speed railway two pier footings.
Summary of the invention
The objective of the invention is at an above-mentioned difficult problem, provide between a kind of high ferro bridge and utilized the interlock stake to form down break-through road and method thereof, guarantee high ferro safe operation in passage construction and the Years Of Service.
For achieving the above object, the invention provides the following break-through road that utilizes the interlock stake to form between a kind of high ferro bridge, this time break-through road is between the bridge pier of high ferro bridge; This time break-through road comprises nose girder, occluding pile wall, stull, base plate; Be provided with the nose girder of the parallel symmetry of two row between described bridge pier along channel direction, described each nose girder is arranged with occluding pile wall, is provided with stull between the described two row occluding pile wall tops, is provided with continuous base plate under the described stull.
Further, described occluding pile wall alternately is made of A stake and B stake A-P, and the diameter of A stake and B stake is 1.0 ~ 2.0m.Described stull is connected with the B stake usually.
Again further, described occluding pile wall and bridge drilling stake clear distance are less than 5 times of high ferro pile foundation stake footpaths.
The present invention also provides between a kind of high ferro bridge and utilizes the interlock stake to form down the method in break-through road, may further comprise the steps:
1) smooth place between the high ferro bridge pier at first, construction arranges the nose girder of two parallel symmetries;
2) be job platform with each nose girder, utilize all casing drill and super retardation setting type concrete technology along channel direction alternately construct from front to back A stake and B stake, form occluding pile wall;
3) the desurfacing soil body is arranged the stull that connects two row occluding pile wall at interval on occluding pile wall stake top;
4) along channel direction, retaining structure set by step 1) ~ the step 3) construction, form " door " font integral body retaining structure;
5) remove the soil body between the two row occluding pile wall to design altitude, cast-in-place base plate between two row occluding pile wall forms the whole retaining structure of closed " mouth " font, but formation not only can have been supported but also the following break-through road of antiseepage.
Further, in the described work progress, the diameter of A stake and B stake is 1.0 ~ 2.0m, and described stull is connected with the B stake usually.
Again further, in the described work progress, occluding pile wall and bridge drilling stake clear distance are not less than 5 times of high ferro pile foundation stake footpaths, the soil body arround the former bridge foundation of assurance interlock not disturbance of pile driving construction, and pier footing is not caused uneven bias voltage, thereby do not influence the normal safe operation of high ferro.
Again further, the break-through road is traffic aisle instantly, cuts a hole the hair piling wall and is aided with waterproof technology at cast-in-place base plate and occluding pile wall link position.
Operating principle:
" all casing drill+super retardation setting type concrete " worker's method of employing, the first order plain concrete pile (A stake) and the second order reinforced concrete pile (B stake) are arranged at interval, the A pile concrete adopts super retardation setting type concrete, before the initial set of A type pile concrete, finish the construction of B stake, make its common final set, form seamless, continuous " piling wall ", during the B pile driving construction, utilize the cutting power of drill machine with casing to cut away the part concrete of adjacent A stake, realize interlock.
Usefulness of the present invention:
1, the present invention is by all casing drill pile foundation of constructing, and because steel sleeve pipe retaining wall is arranged, the imperforate wall problem that collapses of collapsing can not make the high ferro bridge pier produce bias voltage because of boring;
2, the present invention forms the before first symmetrical construction A+B series of passage interlock stake, take down topsoil body construction stake top stull, after forming gate-type integrated support system, excavation forms passage between two row interlock stakes again, the floor crossmember of constructing then, form the whole retaining structure of closed " mouth " font, can not cause the bridge pier bias voltage because taking down the soil body in the passage like this, the uneven soil pressure that produces is born by the piling wall of finishing of constructing, do not destroy simultaneously the high ferro bridge pile foundation soil body yet, it is produced disturbance, and cause the soil body frictional resistance of high ferro pile foundation to cause damage, so that influence basic supporting capacity;
3, the present invention finishes the campshed space enclosing structure that cutting interlock process forms with drill machine with casing under pile concrete is in plastic state, anti-seepage effect is good, need not to be aided with measures such as waterproof of man, extraneous current can not carry out interior exosmosis by piling wall, and the lithology of the pile foundation soil body is not produced destruction.
Description of drawings
Fig. 1 utilizes the interlock stake to form down the structural representation in break-through road between high ferro bridge of the present invention;
Fig. 2 utilizes the interlock stake to form down break-through road job step figure between high ferro bridge of the present invention;
Among the figure, 1. beam portion, 2. bridge pier, 3. cushion cap, 4. drilled pile, 5. nose girder, 6. occluding pile wall,
7. stull, 8. base plate.
The specific embodiment
Below in conjunction with the drawings and specific embodiments detailed description of the invention.
Embodiment 1
As shown in Figure 1: the following break-through road that utilizes the interlock stake to form between a kind of high ferro bridge, this time break-through road is between the bridge pier 2 of high ferro bridge; This time break-through road comprises nose girder 5, occluding pile wall 6, stull, base plate; Be provided with the nose girder of the parallel symmetry of two row between described bridge pier along channel direction, described each nose girder is arranged with occluding pile wall 6, and described two row occluding pile wall are provided with stull 7 between 6 tops, are provided with continuous base plate 8 under the described stull 7.
Occluding pile wall alternately is made of A stake and B stake A-P, and the diameter of A stake and B stake is 1.0 ~ 2.0m.Stull is connected with the B stake.
Drilled pile 4 clear distances of occluding pile wall 6 and bridge are less than 5 times of high ferro pile foundation stakes footpaths.
Stull 7 bottoms are not less than bridge pier 2 cushion caps 3 bottoms.Base plate 8 tops flush with absolute altitude at the bottom of the passage.
As shown in Figure 2: utilize the interlock stake to form down the method in break-through road between its high ferro bridge, may further comprise the steps:
1) at first in 2 smooth places of high ferro bridge pier, construction arranges the nose girder of two parallel symmetries;
2) be job platform with each nose girder 5, utilize all casing drill and super retardation setting type concrete technology along channel direction alternately construct from front to back A stake and B stake, form occluding pile wall 6;
3) the desurfacing soil body is arranged the stull 7 that connects two row occluding pile wall 6 at interval on occluding pile wall stake 6 tops;
4) along channel direction, retaining structure set by step 1) ~ the step 3) construction, form " door " font integral body retaining structure;
5) remove the soil body between the two row occluding pile wall to design altitude, cast-in-place base plate 8 between two row occluding pile wall 6 forms the whole retaining structure of closed " mouth " font, but formation not only can have been supported but also the following break-through road of antiseepage.
In the work progress, the diameter of A stake and B stake is 1.0 ~ 2.0m.Occluding pile wall 6 is not less than 5 times of high ferro pile foundation stake footpaths with bridge drilling stake 4 clear distances.
Instantly the break-through road is traffic aisle, cuts a hole the hair piling wall and is aided with waterproof technology at base plate 8 and occluding pile wall 7 link positions; Whether look geological condition needs base plate sub-surface (as displacement or pile foundation reinforcement) is handled to satisfy the highway driving requirement.
Embodiment 2
The job practices of present embodiment is identical with embodiment 1.Difference is:
When circulation passage was the flood discharge passage instantly, flood discharge channel base plate 8 effect was only for preventing that current scour from causing the loss of occluding pile wall 6 frictional resistances, the also protection against erosion measure replacement such as available mortar flag stone of flood discharge channel base plate.
Although above-described embodiment has been made detailed description to the present invention; but it only is the present invention's part embodiment; rather than whole embodiment, people can also obtain other embodiment according to present embodiment under without creative prerequisite, and these embodiment belong to protection domain of the present invention.
Claims (7)
1. the following break-through road that utilizes the interlock stake to form between a high ferro bridge, this time break-through road is between the bridge pier of high ferro bridge; It is characterized in that: this time break-through road comprises nose girder, occluding pile wall, stull, base plate; Be provided with the nose girder of the parallel symmetry of two row between described bridge pier along channel direction, described each nose girder is arranged with occluding pile wall, is provided with stull between the described two row occluding pile wall tops, is provided with continuous base plate under the described stull.
2. the following break-through road that utilizes the interlock stake to form between high ferro bridge according to claim 1, it is characterized in that: described occluding pile wall alternately is made of A stake and B stake A-P, and the diameter of A stake and B stake is 1.0 ~ 2.0m.
3. the following break-through road that utilizes the interlock stake to form between high ferro bridge according to claim 2 is characterized in that: described occluding pile wall and bridge drilling stake clear distance are less than 5 times of high ferro pile foundation stake footpaths.
4. utilize the interlock stake to form down the method in break-through road between the described high ferro bridge of claim 1, it is characterized in that: may further comprise the steps:
1) smooth place between the high ferro bridge pier at first, construction arranges the nose girder of two parallel symmetries;
2) be job platform with each nose girder, utilize all casing drill and super retardation setting type concrete technology along channel direction alternately construct from front to back A stake and B stake, form occluding pile wall;
3) the desurfacing soil body is arranged the stull that connects two row occluding pile wall at interval on occluding pile wall stake top;
4) along channel direction, retaining structure set by step 1) ~ the step 3) construction, form " door " font integral body retaining structure;
5) soil body between the removing two row occluding pile wall is to design altitude, and cast-in-place base plate between two row occluding pile wall forms the whole retaining structure of closed " mouth " font, break-through road under forming.
5. utilize the interlock stake to form down the method in break-through road between high ferro bridge according to claim 4, it is characterized in that: in the described work progress, the diameter of A stake and B stake is 1.0 ~ 2.0m.
6. utilize the interlock stake to form down the method in break-through road between high ferro bridge according to claim 4, it is characterized in that: in the described work progress, occluding pile wall and drilled pile clear distance are not less than 5 times of high ferro pile foundation stake footpaths.
7. utilize the interlock stake to form down the method in break-through road between high ferro bridge according to claim 4, it is characterized in that: the break-through road is traffic aisle instantly, cuts a hole the hair piling wall and is aided with waterproof technology at base plate and occluding pile wall link position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013102877583A CN103334451A (en) | 2013-07-10 | 2013-07-10 | Underneath-passing channel formed between high-speed rail piers through secant pile walls and method thereof |
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| CN2013102877583A CN103334451A (en) | 2013-07-10 | 2013-07-10 | Underneath-passing channel formed between high-speed rail piers through secant pile walls and method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452805A (en) * | 2014-12-15 | 2015-03-25 | 中铁第四勘察设计院集团有限公司 | Roadbed structure of underpass expressway adjacent to bridge pier |
| CN106087701A (en) * | 2016-08-10 | 2016-11-09 | 上海市城市建设设计研究总院 | Elevated bridge and underground pipe gallery build structure jointly |
| CN110528594A (en) * | 2019-07-31 | 2019-12-03 | 浙江杭海城际铁路有限公司 | A kind of tunneling shield causes the guard method of neighbour's high-speed rail deformation of pile foundation |
| CN112323854A (en) * | 2019-08-05 | 2021-02-05 | 张继红 | Forest type excavation construction method for subway station |
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| CN2642829Y (en) * | 2003-09-20 | 2004-09-22 | 何富荣 | Flashboard culvert |
| KR20110024476A (en) * | 2009-09-02 | 2011-03-09 | (주)컴퍼지트솔루션코리아 | Earth anchor, secant pile wall using composite shell pile and construction method thereof |
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| CN2642829Y (en) * | 2003-09-20 | 2004-09-22 | 何富荣 | Flashboard culvert |
| KR20110024476A (en) * | 2009-09-02 | 2011-03-09 | (주)컴퍼지트솔루션코리아 | Earth anchor, secant pile wall using composite shell pile and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452805A (en) * | 2014-12-15 | 2015-03-25 | 中铁第四勘察设计院集团有限公司 | Roadbed structure of underpass expressway adjacent to bridge pier |
| CN106087701A (en) * | 2016-08-10 | 2016-11-09 | 上海市城市建设设计研究总院 | Elevated bridge and underground pipe gallery build structure jointly |
| CN106087701B (en) * | 2016-08-10 | 2017-09-12 | 上海市城市建设设计研究总院（集团）有限公司 | Elevated bridge and underground pipe gallery build structure jointly |
| CN110528594A (en) * | 2019-07-31 | 2019-12-03 | 浙江杭海城际铁路有限公司 | A kind of tunneling shield causes the guard method of neighbour's high-speed rail deformation of pile foundation |
| CN112323854A (en) * | 2019-08-05 | 2021-02-05 | 张继红 | Forest type excavation construction method for subway station |
| CN112323854B (en) * | 2019-08-05 | 2021-10-29 | 张继红 | Forest type excavation construction method for subway station |
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Application publication date: 20131002 |