CN103437304B - A kind of method increasing pier section replacing pot bearing - Google Patents
A kind of method increasing pier section replacing pot bearing Download PDFInfo
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- CN103437304B CN103437304B CN201310398029.5A CN201310398029A CN103437304B CN 103437304 B CN103437304 B CN 103437304B CN 201310398029 A CN201310398029 A CN 201310398029A CN 103437304 B CN103437304 B CN 103437304B
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Abstract
The present invention relates to technical field of bridge engineering, particularly relate to a kind of method increasing pier section replacing pot bearing, comprise the following steps: step one, within the scope of the certain altitude of pier top, increase pier top section; Step 2, Dun Ding after increasing section places jack jack up girder, then takes out jack with steel cushion block temporary support beam body; Step 3, remove the pot bearing of Dun Ding, the bottom surface of leveling beam body, with concrete in conjunction with glue wedge-shaped steel plate, and fixes spacing around with angle steel; Step 4, builds pinner in pier top casting; Step 5, is set up in parallel two laminated rubber bearings at Dun Ding, and jack holds up beam body, and remove the steel cushion block of temporary support, fall beam, removes jack, completes replacing.The present invention does not need to set up temporary support girder, again changes simply very convenient after replacing, constructing without the need to suspending traffic, greatly reducing social influence, good economy performance, minimum to the injury of original structure, further increases the supporting capacity of respective members.
Description
Technical field
The present invention relates to technical field of bridge engineering, particularly relate to a kind of method increasing pier section replacing pot bearing.
Background technology
The Main Function of bearing is the bearing reaction transmitting superstructure, comprises vertical force and horizontal force, ensures the Free Transform of structure under the factor effects such as mobile load, variations in temperature, concrete shrinkage and creep simultaneously.On existing many bridges, due to product quality, design select, the factor of the aspect such as construction and installation and maintenance, there is serious problem and hidden danger in a large amount of pot bearing, and pot bearing all needs to be connected with concrete by reinforcing bar or crab-bolt due to upper and lower steel plate, change relative sheet-type support comparatively difficulty.
Existing conventional replacing options:
Method one: directly jacking is replaced by new pot bearing.
According to the construction technology changing pot bearing, more than jacking 5cm is needed just to have construction operation space with changing, and the independent jack-up of general bridge Dun Ding highly only allows that jacking is no more than 1.5cm, cannot change by carrying out the independent jack-up of Dun Ding, this just needs to be changed by synchronization of jacking up one, such construction is got up very difficult, and this method replacing cost is high.
Method two: replace with steel plate
Bearing lower steel plate is motionless, is laid down after beam body jack-up 0.5-1.0cm by upper steel plate, and by levelling for beam body, then by upper steel plate by concrete in conjunction with glue at Liang Tishang.The method is intact to bearing, just because the pot bearing of leveling non-at the bottom of beam is applicable, but the bearing of a lot of bridge is not because construction and installation error causes, but can not use completely due to problems such as quality, must change, so the method scope of application is quite limited, not be suitable for the pot bearing that disease is serious, and due to steel plate be by being combined with concrete in conjunction with this organic material of glue, whether its durability can support carriers also need to be proved service life.
Summary of the invention
It is low that technical problem to be solved by this invention is to provide a kind of operating expenses, and be suitable for the method that wide increase pier section changes pot bearing.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of method increasing pier section replacing pot bearing, comprises the following steps:
Step one, pier top section is increased by the method for bar planting, concreting within the scope of the certain altitude of pier top, the pre-buried spacer bars of pier stud augmenting portion of Dun Ding, a described spacer bars part is inserted in described pier stud augmenting portion, and a part stretches out the upper surface of described pier stud augmenting portion;
Step 2, the pier top plane after increasing section places jack jack up girder, then takes out jack with steel cushion block temporary support beam body;
Step 3, removes the pot bearing of Dun Ding, the bottom surface of leveling beam body, at the bottom surface concrete of beam body in conjunction with glue wedge-shaped steel plate, and fixes spacing around with angle steel;
Step 4, builds the pinner of laminated rubber bearing in pier top casting;
Step 5, the position being provided with pot rubber bearing at Dun Dingyuan is set up in parallel two laminated rubber bearings, and jack holds up beam body, and remove the steel cushion block of temporary support, fall beam, removes jack, completes replacing.
The invention has the beneficial effects as follows: do not need newly to set up temporary support girder, after being replaced by laminated rubber bearing, next time is changed simply very convenient again, Dun Ding after direct utilization increases does supporting surface jack-up beam body and easily can replace laminated rubber bearing, without the need to suspending traffic, facilitates vehicle to occur, greatly reduce social influence and indirectly add economic benefit, better economy, minimum to the injury of original structure, whole construction technology further increases the supporting capacity of respective members.
The beneficial effect that in described step one, the cross section of Dun Ding is increased by the method for bar planting, concreting is: bar planting, concreting are the technology of comparative maturity in construction work, effectively can ensure the quality of constructing.
At the pre-buried spacer bars of pier stud augmenting portion of Dun Ding in described step one, a described spacer bars part is inserted in described pier stud augmenting portion, the beneficial effect that a part stretches out the upper surface of described pier stud augmenting portion is: embedded bar on the cross section increased, and the pinner of the pouring in subsequent step can be avoided to be moved.
On the basis of technique scheme, the present invention can also do following improvement.
Further, in described step 2, the height of jack jack up girder is 0.5cm-1.0cm.
The beneficial effect of above-mentioned further scheme is adopted to be: beam body jacking 0.5cm-1.0cm is avoided the too high secondary injury to beam body of jack-up.
Further, the angle steel in described step 3 can be connected with beam body by crab-bolt having the position of construction space.
Adopt the beneficial effect of above-mentioned further scheme to be: the position of stationary wedge steel plate, be moved in the process avoiding wedge-shaped steel plate to operate in construction and later stage bridge.
Further, in described step 4, the height of the pinner of laminated rubber bearing deducts rear plan by the height of former pot bearing and adopts the height of laminated rubber bearing and the height of wedge shape leveling bloom to determine.
The beneficial effect of above-mentioned further scheme is adopted to be: to ensure to change pot bearing and complete the height of back rest body and collimation does not change on original basis.
Further, the pinner of described laminated rubber bearing adopts epoxy concrete pouring to form.
Adopt the beneficial effect of above-mentioned further scheme to be: epoxy concrete hardness is large, and wear-resisting, cost performance is high, use epoxy concrete effectively can improve the application life of pinner.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart increasing the method for pier section replacing pot bearing of the present invention;
The schematic diagram of the spacing angle steel of leveling wedge shape bloom that Fig. 2 increases pier section replacing pot bearing method for the present invention is a kind of uses;
Fig. 3 is that a kind of pier section that increases of the present invention is changed the method for pot bearing and to have been constructed the superstructure schematic diagram of rear abutment.
In accompanying drawing, the list of parts representated by each label is as follows:
1, former pier stud, 2, pier stud augmenting portion, 3, angle steel, 4, wedge-shaped steel plate, 5, crab-bolt, 6, pinner, 7, laminated rubber bearing, 8, spacer bars, 9, steel form.
Detailed description of the invention
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
As shown in Figure 1, a kind of method increasing pier section replacing pot bearing of the present invention, comprises the following steps:
Step one S01, pier top section is increased within the scope of the pier top certain altitude of original pier stud 1, the pier stud augmenting portion 2 of Dun Ding is increased by the method for bar planting, concreting, pre-buried spacer bars 8 in pier stud augmenting portion, described spacer bars 8 part is inserted in described pier stud augmenting portion, a part stretches out the upper surface of described pier stud augmenting portion, is moved for avoiding the pinner 6 of the pouring in subsequent step;
Step 2 S02, the pier top plane of the pier stud augmenting portion 2 after increasing section places jack, by beam body jacking 0.5cm-1.0cm, then takes out jack with steel cushion block temporary support beam body;
Step 3 S03, removes the pot bearing of Dun Ding, the bottom surface of leveling beam body, and at the bottom surface concrete of beam body in conjunction with glue wedge-shaped steel plate 4, and fix spacing with angle steel 3 around, angle steel 3 can be connected with beam body by crab-bolt 5 having the position of construction space;
Step 4 S04, deducting rear plan by the height of former pot bearing adopts the height of laminated rubber bearing and the height of wedge shape leveling bloom to determine the height of the pinner 6 of laminated rubber bearing 7, utilize steel form 9 pairs of pinner 6 limit types, and adopt epoxy concrete to build pinner 6;
Step 5 S05, the position being provided with pot rubber bearing at Dun Dingyuan is set up in parallel two laminated rubber bearings 7, described two laminated rubber bearings 7 lay respectively at the both sides of the center line of former pot bearing, and the center line of two former pot bearings of laminated rubber bearing 7 is symmetrical, hold up beam body about jack, remove the steel cushion block of temporary support, fall beam, remove jack, complete replacing.
The present invention has following advantage compared to prior art:
(1) do not need newly to set up temporary support girder, save economical and construct simple.
(2) beam body only needs jack-up about 0.5cm to take out former pot bearing, avoids the too high secondary injury to beam body of jack-up.
(3) bearing all has certain service life, and after being replaced by laminated rubber bearing, next time is changed simply very convenient again, directly utilizes the Dun Ding after increasing to be supporting surface jack-up beam body 0.5cm and easily can replace laminated rubber bearing.
(4) without the need to suspending traffic, facilitating vehicle to occur, greatly reducing social influence and indirectly adding economic benefit; Owing to being to bridge pier but not beam body carries out increasing section reinforcing, on bridge, vehicle is current negligible to newly-increased concrete disturbance; The top lifting height of beam body also only 0.5cm own, can construct completely under the prerequisite be open to traffic.
(5) better economy, and the more economy of the longer number of bridge and benefit better.
(6) minimum to the injury of original structure, whole construction technology further increases the supporting capacity of respective members.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. increase the method that pier section changes pot bearing, it is characterized in that, comprise the following steps:
Step one, pier top section is increased by the method for bar planting, concreting within the scope of the certain altitude of pier top, the pre-buried spacer bars of pier stud augmenting portion of Dun Ding, a described spacer bars part is inserted in described pier stud augmenting portion, and a part stretches out the upper surface of described pier stud augmenting portion;
Step 2, the pier top plane after increasing section places jack jack up girder, then takes out jack with steel cushion block temporary support beam body;
Step 3, removes the pot bearing of Dun Ding, the bottom surface of leveling beam body, at the bottom surface concrete of beam body in conjunction with glue wedge-shaped steel plate, and fixes spacing around with angle steel;
Step 4, builds the pinner of laminated rubber bearing in pier top casting;
Step 5, the position being provided with pot rubber bearing at Dun Dingyuan is set up in parallel two laminated rubber bearings, and jack holds up beam body, and remove the steel cushion block of temporary support, fall beam, removes jack, completes replacing.
2. a kind of method increasing pier section replacing pot bearing according to claim 1, it is characterized in that, in described step 2, the height of jack jack up girder is 0.5cm-1.0cm.
3. a kind of pier section that increases according to claim 1 changes the method for pot bearing, it is characterized in that, the angle steel in described step 3 is connected with beam body by crab-bolt there being the position of construction space.
4. a kind of method increasing pier section replacing pot bearing according to claim 1, is characterized in that, the pinner of described laminated rubber bearing adopts epoxy concrete pouring to form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310398029.5A CN103437304B (en) | 2013-09-04 | 2013-09-04 | A kind of method increasing pier section replacing pot bearing |
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| CN201310398029.5A CN103437304B (en) | 2013-09-04 | 2013-09-04 | A kind of method increasing pier section replacing pot bearing |
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| CN103437304B true CN103437304B (en) | 2016-04-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108677687A (en) * | 2018-07-02 | 2018-10-19 | 中铁工程设计咨询集团有限公司 | Bent cap, bridge pier, bridge and the bridge assembling constructing method of prefabrication and assembly construction bridge pier |
| CN109629461A (en) * | 2019-01-14 | 2019-04-16 | 中交公局第六工程有限公司 | A method of it does not break off a friendship and carries out cast-in-situ box girder reset and bearing replacement |
| CN110158490A (en) * | 2019-06-04 | 2019-08-23 | 中铁九局集团第七工程有限公司 | Continuous beam synchronization of jacking up construction |
| CN110468725B (en) * | 2019-08-30 | 2021-05-07 | 中铁六局集团太原铁路建设有限公司 | Rear mounting construction method for side pier support of swivel bridge |
| CN114086485B (en) * | 2021-12-30 | 2024-04-23 | 中铁大桥局武汉桥梁特种技术有限公司 | Construction method for replacing large-span high-speed rail continuous beam support |
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| JPH10252016A (en) * | 1997-03-14 | 1998-09-22 | Oriental Constr Co Ltd | Method for replacing bearing device |
| CN201553992U (en) * | 2009-12-17 | 2010-08-18 | 杭州市市政工程集团有限公司 | Device for jacking whole body of box girder |
| CN101906754A (en) * | 2010-07-09 | 2010-12-08 | 清华大学 | Rigid connection method for steel beam and concrete pier |
| CN102518050A (en) * | 2011-12-29 | 2012-06-27 | 江苏华通工程检测有限公司 | Operation platform for replacing support saddle of bridge |
| CN102605722A (en) * | 2012-03-23 | 2012-07-25 | 陈兴冲 | Method for seismic reinforcement of pier by the aid of reinforced concrete cover |
| KR101214531B1 (en) * | 2012-11-12 | 2013-01-09 | (주)우암건설 | A lifting apparatus of upper structure of bridge and lifting method of upper structure of bridge by using |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10252016A (en) * | 1997-03-14 | 1998-09-22 | Oriental Constr Co Ltd | Method for replacing bearing device |
| CN201553992U (en) * | 2009-12-17 | 2010-08-18 | 杭州市市政工程集团有限公司 | Device for jacking whole body of box girder |
| CN101906754A (en) * | 2010-07-09 | 2010-12-08 | 清华大学 | Rigid connection method for steel beam and concrete pier |
| CN102518050A (en) * | 2011-12-29 | 2012-06-27 | 江苏华通工程检测有限公司 | Operation platform for replacing support saddle of bridge |
| CN102605722A (en) * | 2012-03-23 | 2012-07-25 | 陈兴冲 | Method for seismic reinforcement of pier by the aid of reinforced concrete cover |
| KR101214531B1 (en) * | 2012-11-12 | 2013-01-09 | (주)우암건설 | A lifting apparatus of upper structure of bridge and lifting method of upper structure of bridge by using |
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| CN103437304A (en) | 2013-12-11 |
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Inventor after: Zhang Rui Inventor after: Zhou Minghui Inventor after: Zhou Kewen Inventor after: Rui Baodong Inventor before: Zhou Minghui Inventor before: Zhang Rui Inventor before: Zhou Kewen Inventor before: Rui Baodong |
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