CN104695343B - Long-distance jacking construction method based on back wall pushing technology - Google Patents
Long-distance jacking construction method based on back wall pushing technology Download PDFInfo
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- CN104695343B CN104695343B CN201510023558.6A CN201510023558A CN104695343B CN 104695343 B CN104695343 B CN 104695343B CN 201510023558 A CN201510023558 A CN 201510023558A CN 104695343 B CN104695343 B CN 104695343B
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Abstract
The invention belongs to the technical field of jacking and pushing construction in bridge engineering construction, particularly relates to a long-distance jacking construction method based on a back wall pushing technology, and solves the problems that jacking blocks lose stability easily, box culvert postures are skew and construction occupies large space during long-distance jacking construction. The method comprises steps as follows: (1) a box culvert is jacked for a distance by using an original back wall; (2) a prestressed concrete pipe pile part is adopted to be connected with the original back wall, the upper part of the prestressed concrete pipe pile part is covered with a soil layer, a new back wall is formed, and the box culvert is jacked continuously; (3) a jacking block and a jack are removed, a new prestressed concrete pipe pile part is adopted to be connected with the new back wall, the new back wall is formed, and the box culvert is jacked continuously; (4) Step (3) is repeated, and the box culvert is jacked sequentially until arriving at the design position. With the adoption of the method, the stability of the jacking block is guaranteed, the jacked box culvert posture is effectively controlled, and the method has the better application value in long-distance box culvert jacking construction.
Description
Technical field
The invention belongs to incremental launching method technical field in science of bridge building construction, and in particular to a kind of to be advanced based on rear parados
The long range jacking construction method of technology.
Background technology
In modern traffic system, track plan intersects brought problem and increasingly protrudes, in consideration of it, under existing line
Side is widely adopted with heading into box culvert engineering method and build viaduct.Conventional box culvert jacking construction jacking is pushed up over long distances apart from limited
Entering construction top iron needs specific customization, and input cost is high, secondary utilization rate is low and jacking is apart from the easy unstability of long top iron, causes
Box culvert advancing is difficult and attitude is crooked, does not reach jacking standard, and the process occupied ground space of jacking is big, other constructions are had compared with
It is big to affect.
For traditional jacking construction, a kind of pile tube is invented, has been banketed and is quickly set up new rear parados, and advanced rear parados
Method, efficiently, environmental protection, economically solve various problems in long range jack-in process.
The content of the invention
The present invention in order to solve long range jacking construction in push up that the easy unstability of iron, box culvert attitude be crooked, construction takes up room
Big problem, it is proposed that a kind of prestressed concrete pipe pile sets up new rear parados with banketing, and makes rear parados push ahead skill
Art.
The present invention adopts the following technical scheme that realization：A kind of long range jacking construction side based on rear parados Push Technology
Method, step is as follows：(1) using parados after original, using top iron and jack, by the segment distance of box culvert advancing one；(2) prestressing force is adopted
Parados after concrete tubular pile part connection original, prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressing force is mixed
Solidifying soil pile tube part and earthing constitute new rear parados, install top iron and jack, and box culvert continues jacking；（3）Remove top iron and
Jack, using new prestressed concrete pipe pile part spigot-and-socket lateral connection beam Connection Step is used（2）In it is new after
Parados, new prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing
The new rear parados of composition, installs spigot-and-socket back distribution beam, top iron, jack, and box culvert continues jacking,（4）Repeat step（3）,
Successively jacking is until design attitude.
Comprise the following steps that：
（1）Using reinforced concrete pile as back stake, back stake top portion is connected by back coupling beam, before back stake bottom
Side is connected by the back distribution beam of armored concrete, and the gap between back stake and back stake is blocked with sandbag, forms back
Wall, back distribution beam is connected as one by the reinforcing bar for stretching out with slide plate；
（2）Top iron and jack are installed between back distribution beam and box culvert, by box culvert advancing, jacking length is used pre-
The length of prestressed concrete pile tube part；
（3）Top iron and jack are removed, using one end of prestressed concrete pipe pile part back distribution beam is withstood, in advance should
Power concrete tubular pile part arranges one group and more than one group, and adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection
Beam connects, the compacting of prestressed concrete pipe pile partial hierarchical earthing, and prestressed concrete pipe pile and earthing constitute new rear parados,
The other end of prestressed concrete pipe pile part links together with spigot-and-socket back distribution beam, installs top iron and jack, top
Enter box culvert；
（4）Top iron and jack are removed, is laterally connected using spigot-and-socket using new prestressed concrete pipe pile part one end
Connect beam and step（3）The exposed junction of prestressed concrete pipe pile part be connected, then repeat step（3）Remaining step；
（5）Repeat step（4）, until box culvert advancing is to design attitude；
（6）Pile for prestressed pipe top earthing is removed, prestressed concrete pipe pile part is removed section by section, is reused.
When prestressed concrete pipe pile partial hierarchical earthing is compacted, ground floor bankets earthing 70cm, and the second layer bankets earthing
30cm, compactness reaches 95%.
Described spigot-and-socket lateral connection beam includes I-steel, I-steel both sides connection steel plate, the welding of both sides steel plate
The socket component of insertion prestressed concrete pipe pile endoporus.
Described spigot-and-socket back distribution beam includes I-steel, I-steel both sides connection steel plate, the welding of side steel plate
The socket component of insertion prestressed concrete pipe pile endoporus.
By the present invention in that with prestressed concrete pipe pile, spigot-and-socket back distribution beam, spigot-and-socket lateral connection beam, and point
Layer earthing compacting limits the lateral movement of prestressed concrete pipe pile, forms new rear parados, shortens top iron length, it is ensured that top
The stability of iron, effective control jacking box culvert attitude, in long range jacking box culvert construct has preferable using value.
Description of the drawings
Fig. 1 is, as back stake, to install jack and top iron schematic diagram using reinforced concrete pile,
Fig. 2 is the box culvert advancing schematic diagram as back stake using reinforced concrete pile,
Fig. 3 be using prestressed concrete pipe pile partial replacement top iron schematic diagram,
Fig. 4 is to banket in prestressed concrete pipe pile part higher slice and be compacted to form new rear parados schematic diagram,
Fig. 5 is that box culvert continues jacking schematic diagram,
Fig. 6 be reinforced concrete pile as back stake, the schematic diagram of the rear parados of formation,
Fig. 7 is the side view of Fig. 6,
Fig. 8 is spigot-and-socket lateral connection beam schematic diagram,
Fig. 9 is spigot-and-socket back distribution beam schematic diagram,
In figure：1- original grounds, 2- back bankets, 3- back stakes, 4- jack, 5- back distribution beams, 6- box culverts, and 7- is slided
Plate, 8- tops iron, 9- earthing, 10- prestressed concrete pipe piles, 11- spigot-and-socket back distribution beams, 12- spigot-and-socket lateral connection beams,
13- back coupling beams, the cylindric pins of 14-, 15- steel plates, 16- I-steel.
Specific embodiment
With reference to accompanying drawing, the present invention will be further described.
A kind of long range jacking construction method based on rear parados Push Technology, (1) utilizes parados after original, using top iron
And jack, by the segment distance of box culvert advancing one；(2) using parados after prestressed concrete pipe pile part connection original, prestressing force is mixed
Solidifying soil pile tube part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing constitute new rear parados, peace
Dress top iron and jack, box culvert continues jacking；（3）Top iron and jack are removed, using new prestressed concrete pipe pile part
Connection Step（2）In new rear parados, new prestressed concrete pipe pile part top overlying soil, compaction in layers in advance should
Power concrete tubular pile part and earthing constitute new rear parados, install top iron and jack, and box culvert continues jacking,（4）Repeat to walk
Suddenly（3）, successively jacking is until design attitude.
It is comprised the following steps that：
（1）Using reinforced concrete pile as back stake, back stake top portion is connected by back coupling beam, before back stake bottom
Side is connected by the back distribution beam of armored concrete, and the gap between back stake and back stake is blocked with sandbag, forms back
Wall, back distribution beam is connected as one by the reinforcing bar for stretching out with slide plate；
（2）Top iron and jack are installed between back distribution beam and box culvert, by box culvert advancing, jacking length is used pre-
The length of prestressed concrete pile tube part；
（3）Top iron and jack are removed, using one end of prestressed concrete pipe pile part back distribution beam is withstood, in advance should
Power concrete tubular pile part arranges one group and more than one group, and adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection
Beam connects, the compacting of prestressed concrete pipe pile partial hierarchical earthing, and prestressed concrete pipe pile and earthing constitute new rear parados,
The other end of prestressed concrete pipe pile part links together with spigot-and-socket back distribution beam, installs top iron and jack, inspection
Check road, hydraulic system, Operation switch, instrument element, back it is in good condition after, jacking box culvert；
（4）Top iron and jack are removed, is laterally connected using spigot-and-socket using new prestressed concrete pipe pile part one end
Connect beam and step（3）The exposed junction of prestressed concrete pipe pile part be connected, then repeat step（3）Remaining step；
（5）Repeat step（4）, until box culvert advancing is to design attitude；
（6）Pile for prestressed pipe top earthing is removed, prestressed concrete pipe pile part is removed section by section, is reused.
When prestressed concrete pipe pile partial hierarchical earthing is compacted, ground floor bankets earthing 70cm, and the second layer bankets earthing
30cm, compactness reaches 95%.
Described spigot-and-socket lateral connection beam includes I-steel, I-steel both sides connection steel plate, the welding of both sides steel plate
The socket component of insertion prestressed concrete pipe pile endoporus, as shown in Figure 8.
Described spigot-and-socket back distribution beam includes I-steel, I-steel both sides connection steel plate, the welding of side steel plate
The socket component of insertion prestressed concrete pipe pile endoporus, as shown in Figure 9.
Further illustrate by taking a certain engineering as an example：
（1）Rear parados is formed using the reinforced concrete pile of diameter 1.25m, pile spacing 1.25m, the long 14.5m of stake, is guarantee
Jack top power is evenly transferred in back stake, the back distribution of armored concrete is set between rear parados and jack
Beam, is stretched out using back distribution beam and connects batch reinforcing bar back distribution beam is connected with slide plate.
（2）After the completion of back pile driving construction, stake is blocked for keeping off soil with the gap sandbag of stake.Then in situ Mian Shangan roads
The base standard of filling is banketed compaction in layers, and depth of fill 6.5m, width 15m is shown in Fig. 1.
（3）High pressure pumping station is installed in frame bridge, is checked pipeline, hydraulic system, manipulated switch, instrument element, back shape
After state is good, turn on pump gradually rises oil pressure, and jacking box culvert 10m is consistent with the length of prestressed concrete pipe pile used, sees Fig. 2.
（4）Top iron, jack are removed, rear back beam is withstood using the prestressed concrete pipe pile one end of external diameter for 40cm, separately
One end is connected with spigot-and-socket back distribution beam, and back distribution beam adopts 50 type I-steel, flange plate pad 10mm steel plates, a flank
Listrium welding can insert the socket component of prestressed concrete pipe pile internal diameter（See accompanying drawing 8）, two groups of prestressed concrete pipe pile setting,
Connected using spigot-and-socket lateral connection beam between two groups of prestressed concrete pipe piles, 1m thickness plain fills, layering pressure are covered on pile tube
It is real, see Fig. 3 and Fig. 4.
（5）Jack and top iron are installed, jacking 10m is shown in Fig. 4.
（6）Jack, top iron and spigot-and-socket back distribution beam are removed, is replaced after spigot-and-socket using spigot-and-socket lateral connection beam
Back of the body distribution beam, and spigot-and-socket lateral connection beam is inserted in another batch of prestressed concrete pipe pile one end, the other end is used for socket joint
Formula back distribution beam connects second group of prestressed concrete pipe pile, and earthing compaction in layers is installed jack and top iron, checks pipe
Road, hydraulic system, manipulation switch, instrument element, back rear jacking 10m in good condition.
（7）Circulate the 6th step until box culvert by jacking to design attitude.
Claims (5)
1. a kind of long range jacking construction method based on rear parados Push Technology, it is characterised in that step is as follows：(1) using former
Parados afterwards, using top iron and jack, by the segment distance of box culvert advancing one；(2) it is former using the connection of prestressed concrete pipe pile part
Parados afterwards, prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing group
The rear parados of Cheng Xin, installs top iron and jack, and box culvert continues jacking；（3）Top iron and jack are removed, using new prestressing force
Concrete tubular pile part Connection Step（2）In new rear parados, new prestressed concrete pipe pile part top overlying soil,
Compaction in layers, prestressed concrete pipe pile part and earthing constitute new rear parados, install top iron and jack, and box culvert continues to push up
Enter,（4）Repeat step（3）, successively jacking is until design attitude.
2. a kind of long range jacking construction method based on rear parados Push Technology according to claim 1, its feature exists
In comprising the following steps that：
（1）Using reinforced concrete pile as back stake, back stake top portion is connected by back coupling beam, and back stake lower front leads to
The back distribution beam connection of armored concrete is crossed, the gap between back stake and back stake is blocked with sandbag, parados after formation, after
Back of the body distribution beam is connected as one by the reinforcing bar for stretching out with the slide plate of box culvert bottom；
（2）Top iron and jack are installed between back distribution beam and box culvert, by box culvert advancing, jacking length is prestressing force used
The length of concrete tubular pile part；
（3）Top iron and jack are removed, using one end of prestressed concrete pipe pile part back distribution beam is withstood, prestressing force is mixed
Solidifying soil pile tube part arranges one group and more than one group, and longitudinally adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection
Beam connects, the compacting of prestressed concrete pipe pile partial hierarchical earthing, and prestressed concrete pipe pile and earthing constitute new rear parados,
The other end of prestressed concrete pipe pile part is linked together using spigot-and-socket back distribution beam, installs top iron and jack,
Jacking box culvert；
（4）Top iron and jack are removed, using new prestressed concrete pipe pile part one end spigot-and-socket lateral connection beam is adopted
With step（3）The exposed junction of prestressed concrete pipe pile part be connected, then repeat step（3）Remaining step；
（5）Repeat step（4）, until box culvert advancing is to design attitude；
（6）Pile for prestressed pipe top earthing is removed, prestressed concrete pipe pile part is removed section by section, is reused.
3. a kind of long range jacking construction method based on rear parados Push Technology according to claim 2, its feature exists
When prestressed concrete pipe pile partial hierarchical earthing is compacted, ground floor bankets earthing 70cm, and the second layer bankets earthing 30cm, pressure
Solidity reaches more than 95%.
4. a kind of long range jacking construction method based on rear parados Push Technology according to Claims 2 or 3, it is special
Levy is that described spigot-and-socket pile tube lateral connection beam includes I-steel, I-steel both sides connection steel plate, the weldering of both sides steel plate
Patch the socket component into prestressed concrete pipe pile endoporus.
5. a kind of long range jacking construction method based on rear parados Push Technology according to Claims 2 or 3, it is special
Levy is that described spigot-and-socket back distribution beam includes that I-steel, I-steel both sides connection steel plate, the welding of side steel plate are inserted
Enter the socket component of prestressed concrete pipe pile endoporus.
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| CN201510023558.6A CN104695343B (en) | 2015-01-19 | 2015-01-19 | Long-distance jacking construction method based on back wall pushing technology |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105064216B (en) * | 2015-07-29 | 2016-08-24 | 中铁六局集团天津铁路建设有限公司 | Prevent existing line from traversing method occurring during a kind of jacking extra-long frame bridge |
| CN106894350B (en) * | 2017-02-13 | 2022-10-25 | 中交隧道工程局有限公司 | Steel blade angle soil-entering jacking box culvert device and construction method |
| CN107701192B (en) * | 2017-10-19 | 2019-07-19 | 中国建筑工程（香港）有限公司 | Box culvert with pushing frame component relays pushing tow system |
| CN107762526B (en) * | 2017-10-19 | 2019-07-19 | 中国建筑工程（香港）有限公司 | Box culvert with thrustor and box culvert pushing block connection structure relays pushing tow system |
| CN107740694B (en) * | 2017-10-19 | 2019-07-19 | 中国建筑工程（香港）有限公司 | Box culvert relays pushing tow system and its application method |
| CN107747494B (en) * | 2017-10-19 | 2019-07-19 | 中国建筑工程（香港）有限公司 | Box culvert with mobile mechanism relays pushing tow system |
| CN107701197B (en) * | 2017-10-23 | 2019-02-01 | 中铁二十四局集团有限公司 | A kind of box culvert toter for incremental launching construction |
| CN109778905A (en) * | 2019-01-04 | 2019-05-21 | 中铁第四勘察设计院集团有限公司 | Prefabricated assembling type reinforced concrete back block jacking box culvert construct method |
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| CN1202313C (en) * | 2003-07-17 | 2005-05-18 | 沈阳铁路工程建设集团有限公司 | Non cohesire soil thick covering super long large frame stoucture jacking technology |
| CN101935988B (en) * | 2010-08-24 | 2011-08-17 | 攀钢集团冶金工程技术有限公司 | Box culvert structure and jacking method of box culvert for penetrating roadbed |
| CN202359512U (en) * | 2011-12-01 | 2012-08-01 | 上海市基础工程有限公司 | Device for long-distance ejecting of large-sized concrete box culvert |
| CN103089271B (en) * | 2013-02-07 | 2015-06-17 | 中铁三局集团有限公司 | Distributive girder assembly for large scale box culvert top pulling method and construction method thereof |
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