CN102605722A - Method for seismic reinforcement of pier by the aid of reinforced concrete cover - Google Patents
Method for seismic reinforcement of pier by the aid of reinforced concrete cover Download PDFInfo
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- CN102605722A CN102605722A CN2012100814212A CN201210081421A CN102605722A CN 102605722 A CN102605722 A CN 102605722A CN 2012100814212 A CN2012100814212 A CN 2012100814212A CN 201210081421 A CN201210081421 A CN 201210081421A CN 102605722 A CN102605722 A CN 102605722A
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Abstract
The invention discloses a method for seismic reinforcement of a pier by means of increasing a section. The method includes: performing surface treatment for a pier reinforcing area; paying off and drilling in the reinforcing area; removing powder in holes, washing the holes and drying the holes; implanting tensile main bars and transverse structure bars into the holes via bar implanting glue; placing hooped reinforcements for binding the bars; erecting a template and casting concrete; and detaching the template for maintenance. By the aid of the method, the seismic resistance effect of the reinforced pier is extremely obvious, working procedures are simple, large construction tools are omitted, labor is less, professional staff are not needed, a novel structure and an old structure are perfectly combined by the aid of the transverse structure bars, the service life of the pier is longer than that of a CFRP (carbon fiber reinforced plastic) reinforcement and a steel plate, the cost is low, and the environmental adaptability of the method is much higher than that of other methods.
Description
Technical field
The present invention relates to a kind of method of encased steel reinforced concrete seismic hardening bridge pier.This method can obviously improve the shock resistance of bridge pier, belongs to earthquake resistant engineering reinforcing technique field.
Background technology
At present, domestic existing reinforcing technique or method are mostly based on the reparation of bridge pier, and there are serious problems in the combination of the old and new's structure; Such as the steel bonding method; Steel and concrete are solidly more sticking, but because steel and concrete modulus of elasticity differ greatly, hold very much and go wrong; Steel and concrete take place peel off, bridge pier is reduced by force intensity.In case when violent earthquake took place, bridge heavy damage possibly take place and collapses, cause whole traffic system paralysis.
Summary of the invention
In view of above-mentioned; The object of the invention aims to provide a kind of method of outsourcing steel bar concrete reinforcement bridge pier antidetonation; This method not only can comprehensively provide the shock resistance of bridge pier; Can also carry out preventative reinforcing to the low arrangement of reinforcement bridge pier of the not enough railway of existing anti-seismic performance, also can repair all types of reinforced concrete bridge piers at the shake post-reinforcing.
The present invention solves the technical guarantee scheme that its technical problem adopts:
A kind of method of outsourcing steel bar concrete reinforcement bridge pier antidetonation, its step comprises:
A. to adding processings of polishing of Guyuan bridge pier zone concrete, cutter mao then;
B. confirm the bar planting position, on former pier cap, confirm the location point of good boring respectively;
C. remove the powder in the boring, and rinse well, with high-pressure pump moisture in the hole is dried up then with giant;
D. boring is implanted into epoxy resin adhesive;
E. boring is implanted into resistance to plucking master muscle and reinforcing place transversary muscle;
F. colligation hoop stirrup on the resistance to plucking master muscle;
G. shuttering, and cast reinforcing place concrete;
H. form removal, maintenance.
The beneficial effect that the present invention produces is:
(1) compare before bridge pier is reinforced with after reinforcing, effect is very obvious after reinforcing, and supporting capacity had improved 50% before the stressed strength ratio of bridge pier was reinforced.
(2) technology is simple, and the situ wet workload is few, and construction rapidly.Do not hinder communications and transportation;
(3) less with the data by MoM and MEI investment, cost is lower, reinforces bridge pier efficient height.
(4) vertically pulling-resistant master muscle, the transversary muscle of footing and reinforcing place, contact with former bridge pier pier stud master muscle with former bridge pier pier stud hoop stirrup; Footing and former bridge pier all are steel concrete in essence, and after the reinforcing, with respect to other reinforcement means, the two can combine together preferably, has strengthened the supporting capacity of bridge pier.Can prolong bridge application life to greatest extent.
Description of drawings
Fig. 1 bridge pier of the present invention reinforcing place elevation.
Fig. 2 is the lateral view of Fig. 1.
The vertical view of Fig. 3 Fig. 1.
Fig. 4 is the pushover analytical test data and curves of archetype bridge pier
Fig. 5 is that Baogang out of trade reinforced concrete reinforcing highly is 90cmpushover analytical test data and curves.
Among the figure:
The former pier cap 6-of the former bridge pier pier stud of 1-resistance to plucking master muscle 2-hoop stirrup 3-concrete 4-reinforcing place concrete 5-reinforcing place transversary muscle
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
1. remove the laitance on will reinforcing place former pier cap 5 and former bridge pier pier stud concrete 3 surfaces with sander; Stone to be polished in the former pier cap concrete 3 is as the criterion; Then, with surfacing to the uneven cutter hair requirement of checking standard of the position that it is good that chisel or electric hammer will be polished.
2. on the surface of 1. handling well, emit the position in bar planting hole, comprise vertically pulling-resistant master muscle 1 and reinforcing place transversary muscle 6 with measuring apparatus.Calculate the bar planting degree of depth of vertically pulling-resistant master muscle 1 according to " reinforced concrete structural design specification ", the bar planting degree of depth of transversary muscle is with 10---and 20cm is advisable.
3. electricity consumption is drilled in and beats the bar planting hole on the position of putting well; In operation process; To keep the direction in bar planting hole vertical with former bridge pier pier stud concrete 3 surfaces as far as possible; It should be noted that if get in the punching process on the reinforcing bar of former bridge pier pier stud concrete 3, can locate to stagger 2 in situ---3cm continues to accomplish.
4. last at the concrete powder of removing former bridge pier pier stud concrete 3 surfaces, the concrete powder in the bar planting hole will blow clean with high-pressure pump, afterwards, rinses all bar planting holes well with giant, with high-pressure pump it is dried up then.
5. boring is implanted into epoxy resin bar planting glue, is noted that in the bar planting process that bar planting glue is full in the bar planting hole.
6. the vertically pulling-resistant master muscle 1 of waiting the bar planting glue of implanting bond fully firmly afterwards with reinforcing place transversary muscle 6 and former bridge pier pier stud concrete 3 (about 1---2 days); The hoop stirrup 2 that processes is placed on the precalculated position; Tension master's muscle 1 general II level steel that adopts, hoop stirrup 2 adopts I level steel.Accomplish the colligation of reinforcing cage.
7. shuttering is poured into a mould reinforcing place concrete.To notice during shuttering preventing spillage that cast is than the reinforcing place concrete 4 of former bridge pier pier stud concrete 3 high at least one label.In cast reinforcing place concrete 4 processes, note vibration compacting.
8. form removal, maintenance.Reach form removal after the intensity of code requirement, wrap up fully with plastic sheeting immediately after the template of dismantling, and add water curing, it is moistening to be noted that in the maintenance processes that reinforcing place concrete 4 remains concrete surface before reaching the intensity of regulation.
Test Example
The horizontal shear of bridge pier and horizontal movement test
Fig. 4 is the pushover analytical test data and curves of archetype bridge pier, and Fig. 5 outsourcing steel bar concrete reinforcement height is a 90cmpushover analytical test data and curves.Can know from two figure test data analyzers: the maximum, force that unguyed bridge pier can bear is less than 40KN, and after reinforcing 90cm, the maximum horizontal power that bridge pier bore is 60KN, and its supporting capacity has improved 50%.Explain that outsourcing steel bar concrete reinforcement bridge pier is significantly strengthened by force intensity.
Claims (1)
1. the method for an outsourcing steel bar concrete reinforcement bridge pier antidetonation, its step comprises:
A. to reinforcing processings of polishing of the former pier cap of reinforcing place (5) and former bridge pier pier stud concrete (3), cut a hole then mao;
B. confirm the bar planting position, go up the location point of confirming good boring at former pier cap (5) respectively;
C. remove the powder in the boring, and rinse well, with high-pressure pump moisture in the hole is dried up then with giant;
D. boring is implanted into epoxy resin adhesive;
E. boring is implanted into resistance to plucking master muscle (1) and reinforcing place transversary muscle (6);
F. resistance to plucking master muscle (1) is gone up colligation hoop stirrup (2);
G. shuttering, and cast reinforcing place concrete (4);
H. form removal, maintenance.
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CN2012100814212A CN102605722A (en) | 2012-03-23 | 2012-03-23 | Method for seismic reinforcement of pier by the aid of reinforced concrete cover |
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CN2012100814212A CN102605722A (en) | 2012-03-23 | 2012-03-23 | Method for seismic reinforcement of pier by the aid of reinforced concrete cover |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808420A (en) * | 2012-08-23 | 2012-12-05 | 江苏建华管桩有限公司 | Bearing platform and construction method for connection between bearing platform and foundation pile |
CN103306219A (en) * | 2013-06-25 | 2013-09-18 | 福州大学 | Method for quickly repairing and reinforcing post-earthquake damaged pier |
CN103437304A (en) * | 2013-09-04 | 2013-12-11 | 北京中交桥宇科技有限公司 | Method for changing pot bearing by enlarging pier section |
CN103590616A (en) * | 2013-11-08 | 2014-02-19 | 湖南大兴加固改造工程有限公司 | Reactive powder fiber concrete reinforced concrete column and reinforcement method |
CN104805775A (en) * | 2015-05-07 | 2015-07-29 | 福州大学 | Construction method for RC (Reinforced Concrete) bridge pier post-earthquake restoration technology |
CN104831641A (en) * | 2015-05-19 | 2015-08-12 | 福州大学 | Bridge pier consolidation and restoration structure based on super-high-performance concrete and construction method thereof |
CN105178202A (en) * | 2015-07-24 | 2015-12-23 | 华东交通大学 | Method for reinforcing concrete pier through combination of corrugated steel pipes and fiber reinforced powder concrete |
CN107268461A (en) * | 2017-08-24 | 2017-10-20 | 中建五局土木工程有限公司 | The reinforcement means and ruggedized construction of a kind of existing elevated bridge |
CN108589515A (en) * | 2018-05-10 | 2018-09-28 | 长安大学 | A method of shake rear abutment is reinforced using ultra-tough fiber concrete |
CN109487700A (en) * | 2018-12-27 | 2019-03-19 | 东南大学 | Rectangular section bridge pier uses the quake-proof reinforcing structure and construction method of UHPC |
CN111648256A (en) * | 2020-05-26 | 2020-09-11 | 中铁六局集团有限公司 | Pier body reinforcing construction method |
CN111663460A (en) * | 2020-06-28 | 2020-09-15 | 中国十九冶集团有限公司 | Construction method for repairing defects of bridge pad stone |
CN112458908A (en) * | 2020-11-12 | 2021-03-09 | 北京城建道桥建设集团有限公司 | Construction method for steel hoops of pier anti-seismic facility in two-step accurate-in-place mode |
CN112593480A (en) * | 2020-12-18 | 2021-04-02 | 中冶南方工程技术有限公司 | Plant-growing concrete assembled bridge pier |
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CN1584264A (en) * | 2004-06-16 | 2005-02-23 | 李国雄 | Fastening method for high-strength concrete epibolic thin-layer and coupled columns |
CN1851202A (en) * | 2006-05-26 | 2006-10-25 | 上海大学 | Steel reinforced concrete rectangular column reinforcing method |
CN1978843A (en) * | 2005-12-09 | 2007-06-13 | 湖南大学 | Construction method for reinforcing steel-bar net mortar thin layer |
CN102121236A (en) * | 2010-12-20 | 2011-07-13 | 北京金孚佳润公路特种工程有限公司 | Reinforcement method for single column type pier column for supporting main beam of circular arc curve ramp bridge |
CN202543787U (en) * | 2012-03-01 | 2012-11-21 | 陈兴冲 | Structure for increasing section, resisting earthquake and strengthening pier |
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JPH10137884A (en) * | 1996-11-06 | 1998-05-26 | Sumikura Kozai Kk | Method for arranging rc structure |
CN1584264A (en) * | 2004-06-16 | 2005-02-23 | 李国雄 | Fastening method for high-strength concrete epibolic thin-layer and coupled columns |
CN1978843A (en) * | 2005-12-09 | 2007-06-13 | 湖南大学 | Construction method for reinforcing steel-bar net mortar thin layer |
CN1851202A (en) * | 2006-05-26 | 2006-10-25 | 上海大学 | Steel reinforced concrete rectangular column reinforcing method |
CN102121236A (en) * | 2010-12-20 | 2011-07-13 | 北京金孚佳润公路特种工程有限公司 | Reinforcement method for single column type pier column for supporting main beam of circular arc curve ramp bridge |
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Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808420B (en) * | 2012-08-23 | 2015-05-13 | 江苏建华管桩有限公司 | Bearing platform and construction method for connection between bearing platform and foundation pile |
CN102808420A (en) * | 2012-08-23 | 2012-12-05 | 江苏建华管桩有限公司 | Bearing platform and construction method for connection between bearing platform and foundation pile |
CN103306219A (en) * | 2013-06-25 | 2013-09-18 | 福州大学 | Method for quickly repairing and reinforcing post-earthquake damaged pier |
CN103306219B (en) * | 2013-06-25 | 2015-07-22 | 福州大学 | Method for quickly repairing and reinforcing post-earthquake damaged pier |
CN103437304B (en) * | 2013-09-04 | 2016-04-13 | 北京中交桥宇科技有限公司 | A kind of method increasing pier section replacing pot bearing |
CN103437304A (en) * | 2013-09-04 | 2013-12-11 | 北京中交桥宇科技有限公司 | Method for changing pot bearing by enlarging pier section |
CN103590616A (en) * | 2013-11-08 | 2014-02-19 | 湖南大兴加固改造工程有限公司 | Reactive powder fiber concrete reinforced concrete column and reinforcement method |
CN103590616B (en) * | 2013-11-08 | 2016-01-06 | 湖南大兴加固改造工程有限公司 | Active powder fiber concrete strengthening concrete column and reinforcement means |
CN104805775B (en) * | 2015-05-07 | 2016-07-06 | 福州大学 | The construction method of recovery technique after the shake of a kind of RC bridge pier |
CN104805775A (en) * | 2015-05-07 | 2015-07-29 | 福州大学 | Construction method for RC (Reinforced Concrete) bridge pier post-earthquake restoration technology |
CN104831641A (en) * | 2015-05-19 | 2015-08-12 | 福州大学 | Bridge pier consolidation and restoration structure based on super-high-performance concrete and construction method thereof |
CN105178202A (en) * | 2015-07-24 | 2015-12-23 | 华东交通大学 | Method for reinforcing concrete pier through combination of corrugated steel pipes and fiber reinforced powder concrete |
CN107268461A (en) * | 2017-08-24 | 2017-10-20 | 中建五局土木工程有限公司 | The reinforcement means and ruggedized construction of a kind of existing elevated bridge |
CN108589515A (en) * | 2018-05-10 | 2018-09-28 | 长安大学 | A method of shake rear abutment is reinforced using ultra-tough fiber concrete |
CN108589515B (en) * | 2018-05-10 | 2019-04-26 | 长安大学 | A method for strengthening post-earthquake bridge piers with super-tough fiber-reinforced concrete |
CN109487700A (en) * | 2018-12-27 | 2019-03-19 | 东南大学 | Rectangular section bridge pier uses the quake-proof reinforcing structure and construction method of UHPC |
CN111648256A (en) * | 2020-05-26 | 2020-09-11 | 中铁六局集团有限公司 | Pier body reinforcing construction method |
CN111663460A (en) * | 2020-06-28 | 2020-09-15 | 中国十九冶集团有限公司 | Construction method for repairing defects of bridge pad stone |
CN112458908A (en) * | 2020-11-12 | 2021-03-09 | 北京城建道桥建设集团有限公司 | Construction method for steel hoops of pier anti-seismic facility in two-step accurate-in-place mode |
CN112593480A (en) * | 2020-12-18 | 2021-04-02 | 中冶南方工程技术有限公司 | Plant-growing concrete assembled bridge pier |
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Application publication date: 20120725 |