CN104695343A - 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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- CN104695343A CN104695343A CN201510023558.6A CN201510023558A CN104695343A CN 104695343 A CN104695343 A CN 104695343A CN 201510023558 A CN201510023558 A CN 201510023558A CN 104695343 A CN104695343 A CN 104695343A
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- pipe pile
- prestressed concrete
- concrete pipe
- box culvert
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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 bridge engineering construction, be specifically related to a kind of long distance jacking construction method based on rear parados Push Technology.
Background technology
In modern traffic system, track plan intersects the problem brought and day by day protrudes, and Given this, builds overpass bridge and is widely adopted below existing line with heading into box culvert engineering method.Conventional box culvert jacking construction jacking is apart from limited, long distance jacking construction top iron needs specific customization, input cost is high, secondary utilization rate is low and jacking apart from the easy unstability of long top iron, cause box culvert advancing difficulty and attitude crooked, do not reach jacking standard, the process occupied ground space of jacking is large, has considerable influence to other constructions.
For traditional jacking construction, invent a kind of pile tube, banketed and set up new rear parados fast, and made the method that rear parados advances, efficient, environmental protection, solve various problem in long distance jack-in process economically.
Summary of the invention
In order to solve in long distance jacking construction, the present invention pushes up that the easy unstability of iron, box culvert attitude are crooked, construction takes up room large problem, propose a kind of prestressed concrete pipe pile and banket and set up new rear parados, and make rear parados push ahead technology.
The present invention adopts following technical scheme to realize: a kind of long distance jacking construction method based on rear parados Push Technology, and step is as follows: (1) utilizes former rear parados, uses top iron and jack, by box culvert advancing one segment distance; (2) prestressed concrete pipe pile part is adopted to connect former rear parados, prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, install top iron and jack, box culvert continues jacking; (3) top iron and jack is removed, adopt the new rear parados in new prestressed concrete pipe pile part use spigot-and-socket lateral connection beam Connection Step (2), new prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, and install spigot-and-socket back distribution beam, top iron, jack, box culvert continues jacking, (4) repeat step (3), jacking is until design attitude successively.
Concrete steps are as follows:
(1) use reinforced concrete pile as back stake, back stake top is connected by back coupling beam, back stake lower front is connected by the back distribution beam of steel concrete, the sandbag shutoff of gap between back stake and back stake, parados after being formed, back distribution beam is connected as one by the reinforcing bar that stretches out and slide plate;
(2) between back distribution beam and box culvert, install top iron and jack, by box culvert advancing, jacking length is the length of prestressed concrete pipe pile part used;
(3) top iron and jack is removed, one end of prestressed concrete pipe pile part is used to withstand back distribution beam, prestressed concrete pipe pile part arranges more than one group and one group, adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection beam to connect, the compacting of prestressed concrete pipe pile partial hierarchical earthing, prestressed concrete pipe pile and earthing form new rear parados, the other end and the spigot-and-socket back distribution beam of prestressed concrete pipe pile part link together, top iron and jack are installed, crest enters box culvert;
(4) remove top iron and jack, use new prestressed concrete pipe pile part one end to adopt spigot-and-socket lateral connection beam to be connected with the exposed junction of the prestressed concrete pipe pile part of step (3), then repeat the remaining step of step (3);
(5) step (4) is repeated, until box culvert advancing is to design attitude;
(6) remove pile for prestressed pipe top earthing, prestressed concrete pipe pile part is removed section by section, recycling.
During the earthing compacting of prestressed concrete pipe pile partial hierarchical, first floor bankets earthing 70cm, and the second layer bankets earthing 30cm, and degree of compaction reaches 95%.
Described spigot-and-socket lateral connection beam comprises i iron, and i iron both sides connect steel plate, and the socket component of prestressed concrete pipe pile endoporus is inserted in steel plate welding in both sides.
Described spigot-and-socket back distribution beam comprises i iron, and i iron both sides connect steel plate, and the socket component of prestressed concrete pipe pile endoporus is inserted in steel plate welding in side.
The present invention is by using prestressed concrete pipe pile, spigot-and-socket back distribution beam, spigot-and-socket lateral connection beam, and the shifted laterally of layering earthing compacting restriction prestressed concrete pipe pile, form new rear parados, shorten top iron length, ensure that the stability of top iron, effectively control crest enters box culvert attitude, in the construction of long distance crest enters box culvert, have good using value.
Accompanying drawing explanation
Fig. 1, for using reinforced concrete pile as back stake, installs jack and top iron schematic diagram,
Fig. 2 uses reinforced concrete pile as back stake, box culvert advancing schematic diagram,
Fig. 3 replaces top iron schematic diagram for using prestressed concrete pipe pile part,
Fig. 4 be prestressed concrete pipe pile part higher slice banket and compacting 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 lateral 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 ground, 2-back bankets, the stake of 3-back, 4-jack, 5-back distribution beam, 6-box culvert, 7-slide plate, 8-pushes up iron, 9-earthing, 10-prestressed concrete pipe pile, 11-spigot-and-socket back distribution beam, 12-spigot-and-socket lateral connection beam, 13-back coupling beam, the cylindric pin of 14-, 15-steel plate, 16-i iron.
Detailed description of the invention
The present invention will be further described by reference to the accompanying drawings.
Based on a long distance jacking construction method for rear parados Push Technology, (1) utilizes former rear parados, uses top iron and jack, by box culvert advancing one segment distance; (2) prestressed concrete pipe pile part is adopted to connect former rear parados, prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, install top iron and jack, box culvert continues jacking; (3) top iron and jack is removed, adopt the new rear parados in new prestressed concrete pipe pile part Connection Step (2), new prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, install top iron and jack, and box culvert continues jacking, (4) repeat step (3), jacking is until design attitude successively.
Its concrete steps are as follows:
(1) use reinforced concrete pile as back stake, back stake top is connected by back coupling beam, back stake lower front is connected by the back distribution beam of steel concrete, the sandbag shutoff of gap between back stake and back stake, parados after being formed, back distribution beam is connected as one by the reinforcing bar that stretches out and slide plate;
(2) between back distribution beam and box culvert, install top iron and jack, by box culvert advancing, jacking length is the length of prestressed concrete pipe pile part used;
(3) top iron and jack is removed, one end of prestressed concrete pipe pile part is used to withstand back distribution beam, prestressed concrete pipe pile part arranges more than one group and one group, adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection beam to connect, the compacting of prestressed concrete pipe pile partial hierarchical earthing, prestressed concrete pipe pile and earthing form new rear parados, the other end and the spigot-and-socket back distribution beam of prestressed concrete pipe pile part link together, top iron and jack are installed, check pipeline, hydraulic system, console switch, instrument element, after back is in good condition, crest enters box culvert,
(4) remove top iron and jack, use new prestressed concrete pipe pile part one end to adopt spigot-and-socket lateral connection beam to be connected with the exposed junction of the prestressed concrete pipe pile part of step (3), then repeat the remaining step of step (3);
(5) step (4) is repeated, until box culvert advancing is to design attitude;
(6) remove pile for prestressed pipe top earthing, prestressed concrete pipe pile part is removed section by section, recycling.
During the earthing compacting of prestressed concrete pipe pile partial hierarchical, first floor bankets earthing 70cm, and the second layer bankets earthing 30cm, and degree of compaction reaches 95%.
Described spigot-and-socket lateral connection beam comprises i iron, and i iron both sides connect steel plate, and the socket component of prestressed concrete pipe pile endoporus is inserted in steel plate welding in both sides, as shown in Figure 8.
Described spigot-and-socket back distribution beam comprises i iron, and i iron both sides connect steel plate, and the socket component of prestressed concrete pipe pile endoporus is inserted in steel plate welding in side, as shown in Figure 9.
Further illustrate for a certain engineering:
(1) reinforced concrete pile of diameter 1.25m is adopted to form rear parados, pile spacing 1.25m, the long 14.5m of stake, for ensureing evenly to be delivered in back stake by jack top power, the back distribution beam of steel concrete is set between rear parados and jack, uses back distribution beam to stretch out to connect batch reinforcing bar back distribution beam is connected with slide plate.
(2), after back pile driving construction completes, the gap sandbag shutoff of stake and stake is for keeping off soil.Then to banket compaction in layers by roadbed filling standard on original ground, depth of fill 6.5m, width 15m, is shown in Fig. 1.
(3) installation high-voltage pumping plant in frame bridge, after checking that pipeline, hydraulic system, master cock, instrument element, back are in good condition, turn on pump raises oil pressure gradually, crest enters box culvert 10m, conforms to, see Fig. 2 with the length of prestressed concrete pipe pile used.
(4) top iron, jack is removed, prestressed concrete pipe pile one end that external diameter is 40cm is used to withstand rear back beam, the other end is connected with spigot-and-socket back distribution beam, back distribution beam adopts 50 type i iron, frange plate pad 10mm steel plate, side frange plate welding can insert the socket component (see accompanying drawing 8) of prestressed concrete pipe pile internal diameter, prestressed concrete pipe pile arranges two groups, spigot-and-socket lateral connection beam is adopted to connect between two groups of prestressed concrete pipe piles, pile tube covers the thick plain fill of 1m, compaction in layers, is shown in Fig. 3 and Fig. 4.
(5) install jack and top iron, jacking 10m, is shown in Fig. 4.
(6) jack, top iron and spigot-and-socket back distribution beam is removed, spigot-and-socket lateral connection beam is used to replace spigot-and-socket back distribution beam, and spigot-and-socket lateral connection beam is inserted in another batch of prestressed concrete pipe pile one end, the other end uses and connects second group of prestressed concrete pipe pile for spigot-and-socket back distribution beam, earthing compaction in layers, jack and top iron are installed, check pipeline, hydraulic system, master cock, 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., based on a long distance jacking construction method for rear parados Push Technology, it is characterized in that step is as follows: (1) utilizes former rear parados, use top iron and jack, by box culvert advancing one segment distance; (2) prestressed concrete pipe pile part is adopted to connect former rear parados, prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, install top iron and jack, box culvert continues jacking; (3) top iron and jack is removed, adopt the new rear parados in new prestressed concrete pipe pile part Connection Step (2), new prestressed concrete pipe pile part top overlying soil, compaction in layers, prestressed concrete pipe pile part and earthing form new rear parados, install top iron and jack, and box culvert continues jacking, (4) repeat step (3), jacking is until design attitude successively.
2. a kind of long distance jacking construction method based on rear parados Push Technology according to claim 1, is characterized in that concrete steps are as follows:
(1) use reinforced concrete pile as back stake, back stake top is connected by back coupling beam, back stake lower front is connected by the back distribution beam of steel concrete, the sandbag shutoff of gap between back stake and back stake, parados after being formed, back distribution beam is connected as one by the reinforcing bar that stretches out and slide plate;
(2) between back distribution beam and box culvert, install top iron and jack, by box culvert advancing, jacking length is the length of prestressed concrete pipe pile part used;
(3) top iron and jack is removed, one end of prestressed concrete pipe pile part is used to withstand back distribution beam, prestressed concrete pipe pile part arranges more than one group and one group, longitudinally adjacent prestressed concrete pipe pile adopts spigot-and-socket lateral connection beam to connect, the compacting of prestressed concrete pipe pile partial hierarchical earthing, prestressed concrete pipe pile and earthing form new rear parados, the other end of prestressed concrete pipe pile part uses spigot-and-socket back distribution beam to link together, top iron and jack are installed, crest enters box culvert;
(4) remove top iron and jack, use new prestressed concrete pipe pile part one end to adopt spigot-and-socket lateral connection beam to be connected with the exposed junction of the prestressed concrete pipe pile part of step (3), then repeat the remaining step of step (3);
(5) step (4) is repeated, until box culvert advancing is to design attitude;
(6) remove pile for prestressed pipe top earthing, prestressed concrete pipe pile part is removed section by section, recycling.
3. a kind of long distance jacking construction method based on rear parados Push Technology according to claim 2, when it is characterized in that the earthing compacting of prestressed concrete pipe pile partial hierarchical, first floor bankets earthing 70cm, and the second layer bankets earthing 30cm, and degree of compaction reaches more than 95%.
4. a kind of long distance jacking construction method based on rear parados Push Technology according to Claims 2 or 3, is characterized in that the socket component that described spigot-and-socket pile tube lateral connection beam comprises i iron, i iron both sides connect steel plate, prestressed concrete pipe pile endoporus is inserted in steel plate welding in both sides.
5. a kind of long distance jacking construction method based on rear parados Push Technology according to Claims 2 or 3, is characterized in that the socket component that described spigot-and-socket back distribution beam comprises i iron, i iron both sides connect steel plate, prestressed concrete pipe pile endoporus is inserted in steel plate welding in side.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105064216A (en) * | 2015-07-29 | 2015-11-18 | 中铁六局集团天津铁路建设有限公司 | Method for preventing existing line from transversely moving during jacking super-long framed bridge |
| CN106894350A (en) * | 2017-02-13 | 2017-06-27 | 中交隧道工程局有限公司 | A kind of steel basil is buried jacking box culvert device and construction method |
| CN107701197A (en) * | 2017-10-23 | 2018-02-16 | 中铁二十四局集团有限公司 | A kind of box culvert toter for incremental launching construction |
| WO2019076056A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Box culvert relay jacking system having movable mechanism |
| WO2019076057A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Box-culvert relay push system having push apparatus and box-culvert push block connection structure |
| WO2019076053A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Interjack station-based box culvert jacking system and method for using same |
| WO2019076055A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Interjack station-based box culvert jacking system having jacking frame assembly |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105064216A (en) * | 2015-07-29 | 2015-11-18 | 中铁六局集团天津铁路建设有限公司 | Method for preventing existing line from transversely moving during jacking super-long framed bridge |
| 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 |
| CN106894350A (en) * | 2017-02-13 | 2017-06-27 | 中交隧道工程局有限公司 | A kind of steel basil is buried jacking box culvert device and construction method |
| WO2019076056A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Box culvert relay jacking system having movable mechanism |
| WO2019076057A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Box-culvert relay push system having push apparatus and box-culvert push block connection structure |
| WO2019076053A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Interjack station-based box culvert jacking system and method for using same |
| WO2019076055A1 (en) * | 2017-10-19 | 2019-04-25 | 中国建筑工程（香港）有限公司 | Interjack station-based box culvert jacking system having jacking frame assembly |
| CN107701197A (en) * | 2017-10-23 | 2018-02-16 | 中铁二十四局集团有限公司 | A kind of box culvert toter for incremental launching construction |
| 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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