CN101603290A - The job practices of concrete used for reinforcing underwater pier - Google Patents
The job practices of concrete used for reinforcing underwater pier Download PDFInfo
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- CN101603290A CN101603290A CNA2009100597492A CN200910059749A CN101603290A CN 101603290 A CN101603290 A CN 101603290A CN A2009100597492 A CNA2009100597492 A CN A2009100597492A CN 200910059749 A CN200910059749 A CN 200910059749A CN 101603290 A CN101603290 A CN 101603290A
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- concrete
- steel cofferdam
- reinforcing underwater
- underwater pier
- pier
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Abstract
The invention belongs to bridge and build technical field, what be particularly related to is a kind of job practices of concrete used for reinforcing underwater pier, this method is that foam rubber, rubber tile and guide locating device provided are installed on steel cofferdam, finishes the construction of concrete used for reinforcing underwater pier under water with concrete under the alternative light water of the concrete of not emanating.The construction sequence of this method is as follows: on its bottom face foam rubber is installed before the entry of A. steel cofferdam; B. install on the wall guide locating device provided before the steel cofferdam entry within it; C. in its base plate, on the edge rubber tile is installed before the steel cofferdam entry; D. steel cofferdam sink in place after, concrete cast conduit is installed; E. depositing funnel is installed and is poured into a mould the concrete of not emanating under water in concrete cast catheter tip; F. remove depositing funnel and concrete cast conduit, finish the construction of concrete used for reinforcing underwater pier.The present invention has successfully solved time bridge pier and has reinforced with concrete this difficult problem of constructing, and has created a kind of not only safe and reliable but also the economy job practices of concrete used for reinforcing underwater pier easily.
Description
Technical field:
The invention belongs to bridge and build technical field, particularly be a kind of job practices of concrete used for reinforcing underwater pier.
Background technology:
Owing to reasons such as design defect, construction quality accident, earthquake or other natural calamity, ship collision and overburden uses, the bridge that builds up that needs reinforcement gets more and more.Crack or other diseases partly appear if built up the pier shaft under water of the bridge pier of bridge, preferably adopt and install steel cofferdam earlier in the bridge pier neighboring certain limit that goes wrong, the cast concrete used for reinforcing underwater pier comes it is reinforced in the basic end face certain altitude scope between bridge pier outer wall and steel cofferdam inwall then.In the highway bridge construction field, traditional cast of concrete under water mainly is the construction that is used to carry out the bridge foundation engineering.Though traditional pouring procedure of concrete under water its to continue to use the time longer because the uncertain factor of subaqueous construction is numerous, in practice of construction, the possibility that goes wrong in the concrete casting process is still higher under water.The concrete used for reinforcing underwater pier construction is bigger than concrete difficulty of construction under the traditional water, and the necessary especially assurance of its work progress is perfectly safe, in case because go wrong in the work progress, consequence will be very serious.The main difficult point of concrete used for reinforcing underwater pier construction is: 1, the problem of leak stopping how.Steel cofferdam used for reinforcing underwater pier generally places on the basis or cushion cap end face of underwater foundation, after the depth of water surpasses certain degree of depth, cleaning and cleaning to basis or cushion cap end face before steel cofferdam sinks can not be accomplished very thorough mostly, this will cause steel cofferdam to sink to have certain clearance between its bottom surface, back in place and basis or cushion cap end face, and the good this gap of not shutoff just certainly will cause that a large amount of leakages because of concrete used for reinforcing underwater pier cause can't finish the serious consequence that concrete is first poured into a mould.2, how to reduce the problem of concrete over pressure.In the traditional casting and constructing of concrete under water process, reach the back cover effect and just must reach the concrete under water of several cubic metres even tens of cubic metres in very short time continuous pouring quantity as the back cover concrete.The uninterrupted cast at a high speed under deep water conditions of the concrete under water of good fluidity is enough to cause being positioned over the over pressure that weir body deformability even the whole displacement of weir body take place for steel cofferdam on the underwater foundation cushion cap end face with generation, does not manage to reduce the construction that this over pressure just can not begin concrete used for reinforcing underwater pier.This shows that traditional concrete construction method under water all can't be implemented in the construction concrete used for reinforcing underwater pier.How safety, this difficult problem of construction of finishing concrete used for reinforcing underwater pier efficiently need to be resolved hurrily.
Summary of the invention
The objective of the invention is provides a kind of job practices of concrete used for reinforcing underwater pier for overcoming the difficult problem of above-mentioned existence.
The job practices of concrete used for reinforcing underwater pier of the present invention is installed foam rubber, rubber tile and guide locating device provided on steel cofferdam, finish the construction of concrete used for reinforcing underwater pier under water with concrete under the alternative light water of the concrete of not emanating.
The job practices of above-mentioned concrete used for reinforcing underwater pier, its construction sequence is as follows:
On its bottom face, foam rubber is installed before A, the steel cofferdam entry;
Install on the wall guide locating device provided before B, the steel cofferdam entry within it;
In its base plate, on the edge rubber tile is installed before C, the steel cofferdam entry;
D, steel cofferdam sink in place after, concrete cast conduit is installed;
E, depositing funnel and the cast concrete of not emanating is installed under water in concrete cast catheter tip;
F, dismounting depositing funnel and concrete cast conduit are finished the construction of concrete used for reinforcing underwater pier.
The job practices of above-mentioned concrete used for reinforcing underwater pier is finished whole used for reinforcing underwater pier concrete once-cast of not emanating or divide casting complete two～ten times under water.
The job practices of above-mentioned concrete used for reinforcing underwater pier, behind the steel cofferdam installation in position, the foam rubber that is installed in its bottom surface on the basis or the cushion cap end face have the protrusion place or relatively higher position compressed significantly, on the basis or the cushion cap end face has pit or relative position lower then not to be compressed or only by small amplitude compression to block the gap between steel cofferdam bottom surface and basis or cushion cap end face.
The job practices of above-mentioned concrete used for reinforcing underwater pier, rubber tile one end that is installed in edge in the steel cofferdam base plate is fixed on the steel cofferdam, forms fixed end, and the other end then is a free end.After beginning under water the concrete cast, the rubber tile free end is pressed to by concrete under water is close to basis or cushion cap end face.Along with being on the increase of the concrete of being poured into a mould under water, the free end of rubber tile is pressed tighter and tighter, its position also is fixed, and this just makes rubber tile form an end and is fixed in the steel cofferdam base plate along the other end and is pressed solidly the division board that certain intensity is arranged on basis or the cushion cap end face.Rubber tile plays good plugging action in the gap between the steel cofferdam inboard is to the steel cofferdam bottom surface that may exist and basis or cushion cap end face.
Above-mentioned foam rubber that is installed in the steel cofferdam bottom surface and the rubber tile that is installed in edge in the steel cofferdam base plate, constituted twice shutoff measure jointly, prevented the leakage of concrete used for reinforcing underwater pier effectively gap between the steel cofferdam bottom surface that may exist and basis or cushion cap end face.
The job practices of above-mentioned concrete used for reinforcing underwater pier, the locating guide device that is installed in the steel cofferdam inwall is made of shaped steel and roller bearing, this guide locating device provided not only can opposing effectively reaches the suffered drag force in back in place in the steel cofferdam sinking process, realize accurately transferring and preventing that steel cofferdam from sinking back in place because the displacement that the drag force effect is produced of steel cofferdam, can also prevent that under water concrete builds in the process off normal because the suffered unequal steel cofferdam that causes of lateral pressure by concrete generation under water of steel cofferdam all directions inwall transfinites.
The job practices of above-mentioned concrete used for reinforcing underwater pier, substitute concrete under the light water with concrete under the separating water not, bring into play the superpower anti-dispersive property of the concrete of not emanating under water, realized the big quantity back cover of the discontinuous cast concrete concrete under water of constructing under the prerequisite of concrete performance under water not influencing, avoided influence or the damage of over pressure that the continuous pouring of big quantity back cover concrete caused steel cofferdam.
The job practices of concrete used for reinforcing underwater pier of the present invention, simple and practical, safe and reliable, the efficiency of construction height, working continuously property is strong, and it is little to take construction area, the ancillary service that needs is few, the making of home-built equipment and installation are very convenient, and use and method of operating are easy to learn, and the preparatory period that needs is short.In sum, the job practices of concrete used for reinforcing underwater pier of the present invention has solved time bridge pier and has reinforced construction this difficult problem with concrete, has created a kind of not only safe and reliable but also the economy job practices of concrete used for reinforcing underwater pier easily.
Description of drawings
Fig. 1 is that the master behind the steel cofferdam installation in position of the inventive method looks schematic diagram.
Fig. 2 is the schematic top plan view behind the steel cofferdam installation in position of the inventive method.
Fig. 3 is that the A--A behind the steel cofferdam installation in position of the inventive method looks schematic diagram.
Fig. 4 is that the B--B behind the steel cofferdam installation in position of the inventive method looks schematic diagram.
Fig. 5 is a C full-page proof schematic diagram of implementing the inventive method.
Fig. 6 is an operating principle schematic diagram of implementing the rubber tile of the inventive method.
Fig. 7 is the Construction Arrangement schematic diagram of the inventive method.
The specific embodiment
The Ming River bridge general arrangement of sub-level ground, speedway mausoleum, Dujiang weir, Sichuan to Wenchuan is: 2 * 50m (freely-supported T beam)+(125+220+125) m continuous rigid frame+17 * 50m (freely-supported T beam), overall length of bridge 1440.22m.Sub-level ground, mausoleum Ming River bridge design basic earthquake intensity is the VII degree.The 8.0 grades of violent earthquakes in Wenchuan took place on May 12nd, 2008, and the maximum earthquake intensity in earthquake centre reaches the XI degree, about 7 kilometers apart from the earthquake centre of sub-level ground, mausoleum Ming River bridges.On the whole, sub-level ground, mausoleum Ming River bridge has withstood the test of the 8.0 grades of violent earthquakes in Wenchuan, but because earthquake intensity is excessive, the bridge location place is about the X degree, duration of earthquake is greater than 80s, the first road diaphragm (68m under water) of finding after testing after the shake to make progress at the bottom of above 2m place (80m under water), bridge 5# pier pier bottom and the pier locates all to have occurred crackle, need implement repairing and reinforcement to it.After crossing repeatedly demonstration in many ways, adopt and in the 5# bridge pier neighboring certain limit that goes wrong, installs steel cofferdam earlier, between bridge pier outer wall and steel cofferdam inwall, pour into a mould under water concrete then and come it is reinforced and add.Adopted the job practices of concrete used for reinforcing underwater pier of the present invention in the actual strengthening construction of this bridge.
The job practices of concrete used for reinforcing underwater pier of the present invention is installed foam rubber 2, rubber tile 3 and guide locating device provided 4 on steel cofferdam 1, substitute construction that light waters under concrete finish concrete used for reinforcing underwater pier with the concrete 5 of not emanating under water.
The job practices of above-mentioned concrete used for reinforcing underwater pier, its construction sequence is as follows:
Install guide locating device provided 4 on the wall within it before B, steel cofferdam 1 entry;
D, steel cofferdam 1 sink in place after, concrete cast conduit 12 is installed;
E, depositing funnel 13 and the cast concrete 5 of not emanating is installed under water on concrete cast conduit 12 tops;
F, dismounting depositing funnel 13 and concrete cast conduit 12 are finished the construction of concrete used for reinforcing underwater pier.
The job practices of above-mentioned concrete used for reinforcing underwater pier is with whole used for reinforcing underwater pier 5 minutes four times casting completes of concrete of not emanating under water.
The job practices of above-mentioned concrete used for reinforcing underwater pier, foam rubber 2 usefulness marine glues stick on the base plate 6 of steel cofferdam 1.
The job practices of above-mentioned concrete used for reinforcing underwater pier, 20cm drills through the hole at interval on the interior edge of the base plate 6 of steel cofferdam 1,20cm drills through the hole at interval on rubber tile 3,20cm drills through the hole at interval on press strip band steel 7, rubber tile 3 is placed base plate 6 interior of steel cofferdam 1 along last, press strip band steel 7 is placed on the rubber tile 3, and base plate 6 interior that bolt 8 is passed press strip band steel 7, rubber tile 3 and steel cofferdam 1 is along last corresponding through hole and tighten, and finishes the installation of rubber tile 3 fixed ends.Guarantee that the rubber tile 3 free ends device in place that accurately sinks is made up of steelframe 9 and cord 10, at steel cofferdam 1 inwall near being that steelframe 9 is set at interval on the periphery of bottom with 2.0m, one end of steelframe 9 is fixed on 1 inwall of cofferdam, cord 10 1 ends are connected on the steelframe 9, and the other end is connected with rubber tile 3 free ends.
Above-mentioned cord 10 roles that are used for connecting steelframe 9 and rubber tile 3 are to retrain at the front end of steel cofferdam 1 sinking process to rubber tile 3 temporarily, after steel cofferdam 1 sinking is in place, rubber tile 3 is put in the cushion cap end face, cord 10 is loosened automatically, behind the concrete 5 of not emanating of cast, the free section of rubber tile 3 can be fitted well under water with the cushion cap end face 11 of underwater foundation.
Above-mentioned guide locating device provided 4 are made of shaped steel 14 and roller bearing 15, and an end of shaped steel is fixed on the inwall of steel cofferdam 1, another section installation roller bearing 15.
The job practices of concrete used for reinforcing underwater pier of the present invention, all the other are all identical with embodiment 1 except that concrete 5 once-casts that whole used for reinforcing underwater pier are not emanated are under water finished.
The job practices of concrete used for reinforcing underwater pier of the present invention, all the other are all identical with embodiment 1 except that 5 fens second pourings of concrete that whole used for reinforcing underwater pier are not emanated are under water finished.
The job practices of concrete used for reinforcing underwater pier of the present invention, all the other are all identical with embodiment 1 except that 5 minutes seven times casting completes of concrete that whole used for reinforcing underwater pier are not emanated under water.
The job practices of concrete used for reinforcing underwater pier of the present invention, all the other are all identical with embodiment 1 except that 5 minutes ten times casting completes of concrete that whole used for reinforcing underwater pier are not emanated under water.
Claims (3)
1. the job practices of concrete used for reinforcing underwater pier of the present invention, it is characterized in that going up installation foam rubber (2), rubber tile (3) and guide locating device provided (4), finish the construction of concrete used for reinforcing underwater pier under water with concrete under the alternative light water of the concrete (5) of not emanating at steel cofferdam (1).
2. the job practices of the described concrete used for reinforcing underwater pier of claim 1 is characterized in that construction sequence is as follows:
Foam rubber (2) is installed on its bottom face before A, steel cofferdam (1) entry;
On the wall guide locating device provided (4) are installed within it before B, steel cofferdam (1) entry;
Before the C, steel cofferdam (1) entry in its base plate (6) along last installation rubber tile (3);
D, steel cofferdam (1) sink in place after, concrete cast conduit (12) is installed;
E, depositing funnel (13) and the cast concrete (5) of not emanating is installed under water on concrete cast conduit (12) top;
F, dismounting depositing funnel (13) and concrete cast conduit (12) are finished the construction of concrete used for reinforcing underwater pier.
3. the job practices of the described concrete used for reinforcing underwater pier of claim 1 is characterized in that whole used for reinforcing underwater pier concrete (5) once-cast of not emanating is under water finished or divided casting complete two～ten times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100597492A CN101603290A (en) | 2009-06-25 | 2009-06-25 | The job practices of concrete used for reinforcing underwater pier |
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| CNA2009100597492A CN101603290A (en) | 2009-06-25 | 2009-06-25 | The job practices of concrete used for reinforcing underwater pier |
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| CN101603290A true CN101603290A (en) | 2009-12-16 |
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| CNA2009100597492A Pending CN101603290A (en) | 2009-06-25 | 2009-06-25 | The job practices of concrete used for reinforcing underwater pier |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286941A (en) * | 2011-08-10 | 2011-12-21 | 四川省交通运输厅公路规划勘察设计研究院 | Deepwater pier reinforcing structure and reinforcing method thereof |
| CN102286940A (en) * | 2011-08-09 | 2011-12-21 | 中铁二十四局集团有限公司 | Construction method for remoulding old pier columns of bridges |
| CN104179128A (en) * | 2014-08-15 | 2014-12-03 | 安徽建工集团有限公司 | Concrete bridge pier reinforcement method |
| CN106522234A (en) * | 2016-11-29 | 2017-03-22 | 中交四航局第二工程有限公司 | Underwater grouting template structure with increased cylinder section and construction method thereof |
| CN108457205A (en) * | 2018-03-09 | 2018-08-28 | 中国五冶集团有限公司 | A kind of bridge spanning the river reorganization and expansion construction method |
| CN109056508A (en) * | 2018-08-29 | 2018-12-21 | 中铁大桥局武汉桥梁特种技术有限公司 | The construction method of the bridge pier of basic protection against erosion, bridge and underwater foundation protection against erosion |
| CN109610532A (en) * | 2018-11-15 | 2019-04-12 | 中铁大桥（南京）桥隧诊治有限公司 | The reinforced construction method of bridge foundation protection against erosion |
| CN113529589A (en) * | 2021-08-06 | 2021-10-22 | 交通运输部公路科学研究所 | Plate splicing device applied to reinforcing of underwater bridge piers and reinforcing method thereof |
-
2009
- 2009-06-25 CN CNA2009100597492A patent/CN101603290A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286940A (en) * | 2011-08-09 | 2011-12-21 | 中铁二十四局集团有限公司 | Construction method for remoulding old pier columns of bridges |
| CN102286940B (en) * | 2011-08-09 | 2013-07-24 | 中铁二十四局集团有限公司 | Construction method for remoulding old pier columns of bridges |
| CN102286941A (en) * | 2011-08-10 | 2011-12-21 | 四川省交通运输厅公路规划勘察设计研究院 | Deepwater pier reinforcing structure and reinforcing method thereof |
| CN104179128A (en) * | 2014-08-15 | 2014-12-03 | 安徽建工集团有限公司 | Concrete bridge pier reinforcement method |
| CN104179128B (en) * | 2014-08-15 | 2016-01-20 | 安徽建工集团有限公司 | The reinforcement means of concrete pier |
| CN106522234A (en) * | 2016-11-29 | 2017-03-22 | 中交四航局第二工程有限公司 | Underwater grouting template structure with increased cylinder section and construction method thereof |
| CN106522234B (en) * | 2016-11-29 | 2019-08-02 | 中交四航局第二工程有限公司 | A kind of the underwater grouting formwork structure and its construction method of pole section increasing |
| CN108457205A (en) * | 2018-03-09 | 2018-08-28 | 中国五冶集团有限公司 | A kind of bridge spanning the river reorganization and expansion construction method |
| CN108457205B (en) * | 2018-03-09 | 2019-08-13 | 中国五冶集团有限公司 | A kind of bridge spanning the river reorganization and expansion construction method |
| CN109056508A (en) * | 2018-08-29 | 2018-12-21 | 中铁大桥局武汉桥梁特种技术有限公司 | The construction method of the bridge pier of basic protection against erosion, bridge and underwater foundation protection against erosion |
| CN109610532A (en) * | 2018-11-15 | 2019-04-12 | 中铁大桥（南京）桥隧诊治有限公司 | The reinforced construction method of bridge foundation protection against erosion |
| CN113529589A (en) * | 2021-08-06 | 2021-10-22 | 交通运输部公路科学研究所 | Plate splicing device applied to reinforcing of underwater bridge piers and reinforcing method thereof |
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Open date: 20091216 |