CN101413249B - Method for positioning and mounting large-scale bridge support - Google Patents
Method for positioning and mounting large-scale bridge support Download PDFInfo
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- CN101413249B CN101413249B CN2008101801425A CN200810180142A CN101413249B CN 101413249 B CN101413249 B CN 101413249B CN 2008101801425 A CN2008101801425 A CN 2008101801425A CN 200810180142 A CN200810180142 A CN 200810180142A CN 101413249 B CN101413249 B CN 101413249B
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Abstract
The invention provides a method for positioning and installing large-sized bridge supports, which relates to large-sized bridge construction. The method concretely comprises the following: 1. a step of manufacturing a steel baseplate; 2. a step of accurately positioning the steel baseplate of a support; 3. a step of grouting an anchor bolt hole; 4. pouring cushion stone concrete; and 5. maintaining pressure and blocking a vent hole. The method for positioning and installing large-sized bridge supports can ensure that gas is smoothly discharged when the cushion stone concrete is poured, ensurethe close contact between the steel baseplate of the support and a cushion stone, and improve integral stress property.
Description
Technical field
The present invention relates to large bridge and build, specifically a kind of location of large-scale bridge support and mounting method.
Background technology
Traditional bridge pad is reserved anchor hole when pinner is constructed, bearing is installed the post-grouting anchoring, and the anchor hole of reserving when only needing accurate location pinner just can make the bearing location, by anchor hole grouting anchoring crab-bolt, gets final product fixed bearing.But, now general large-scale bridge support is the orthotropic plate steel work, from as subregion independence enclosed construction, the steel baseplate of bearing is with synchronous anchoring construction of pinner and positioning accuracy request height, gas was difficult to discharge when this just caused pinner concreting, accumulate in the pinner end face and form a large amount of bubbles, the steel baseplate that makes bearing is with producing the gap between the pinner, and influence is whole stressed.
Summary of the invention
At the defective that exists in the prior art, the object of the present invention is to provide a kind of location and mounting method of large-scale bridge support, gas is discharged smoothly in the time of can guaranteeing pinner concreting, and the steel baseplate of guaranteeing bearing improves whole stressed property with closely contact between the pinner.
For reaching above purpose, the technical scheme that the present invention takes is:
A kind of location of large-scale bridge support and mounting method is characterized in that: its concrete steps are:
The steel baseplate of step 2, accurate positioning support: utilize the locating rack structural framing 21 that constitutes by level, vertical adjustable locating support, the steel baseplate 24 of bearing is accurately located, said level, vertical adjustable locating support are adjusted bolt 22 by some screw rods and plane or are vertically adjusted bolt 23 and cooperate, be anchored on the pre-embedded steel slab of pier top pedestal, utilize the spinning in and out of bolt, adjust spiro rod length, be arranged on the plan-position and the elevation of the steel baseplate 24 of the bearing above the locating rack structural framing 21 with adjustment, make crab-bolt 2 stretch in the anchor hole 34 of pier top pedestal;
Step 4, build the pinner concrete: pinner template 43 is placed in around the steel baseplate 24, adopt C50 not have contraction, microdilatancy, self-leveling concrete then and build pinner, pinner is built in the process concrete is slightly vibrated, and is beneficial to the closely knit of position, pinner corner; Slow down when building and build, building the back that finishes and inserting by the bamboo chip level and smashes, gas is discharged by venthole apart from the about 10cm of end face;
Step 5, pressurize and shutoff venthole: pressurize that height 1m diameter is at least 30cm is set with steel pipe 41 building the concrete feed opening of pinner place, pressurize is carried out pressurize by the concrete discrepancy in elevation to steel baseplate 24 interior concrete with filling concrete in the steel pipe 41; Because the pressure effect, venthole 3 can pulps, and shutoff is carried out to venthole 3 in the pulp for the treatment of venthole 3 back that meets the requirements.
On the basis of technique scheme, the spacing of two adjacent ventholes 3 is 10cm～20cm, and the diameter of venthole 3 is Φ 25mm.
On the basis of technique scheme, the front end of said bamboo chip and middle part at an angle, middle part and rear end are level.
The location of large-scale bridge support of the present invention and mounting method, gas is discharged smoothly in the time of can guaranteeing pinner concreting, and the steel baseplate of guaranteeing bearing improves whole stressed property with closely contact between the pinner.Therefore, the method that the present invention provides has the following advantages: bridge pad is active controllable in accurate location, installation process, and the pinner concrete is built with the steel baseplate of bearing and is integral, and the closely connected no gap of its contact surface; The steel baseplate of bearing is adjusted convenient reliably in the work progress, and the pinner concreting method is simple.
Description of drawings
The present invention has following accompanying drawing:
Fig. 1 steel baseplate structural representation
Fig. 2 steel baseplate locating rack schematic diagram
Fig. 3 bearing anchor hole grouting schematic diagram
Fig. 4 builds pinner concrete and pressurize schematic diagram
Reference numeral:
1 blanking hole, 2 anchors are fastened, 3 ventholes, 21 locating rack structural framings, bolt is adjusted on 22 planes, 23 vertical bolt, 24 steel baseplates, 31 grout filler loading heads, 32 grouting hoses, 34 anchor hole, 41 pressurize steel pipes, the 43 pinner templates adjusted.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
The invention provides a kind of location and mounting method of large-scale bridge support, its concrete steps are:
Step 4, build pinner concrete (referring to Fig. 4): pinner template 43 is placed in around the steel baseplate 24, adopt C50 not have contraction, microdilatancy, self-leveling concrete then and build pinner, pinner is built in the process concrete is slightly vibrated, and is beneficial to the closely knit of position, pinner corner; Slow down when building and build, building the back that finishes and inserting by the bamboo chip level and smashes, gas is discharged by venthole apart from the about 10cm of end face;
Step 5, pressurize and shutoff venthole (referring to Fig. 4): pressurize that height 1m diameter is at least 30cm is set with steel pipe 41 building the concrete feed opening of pinner place, pressurize is carried out pressurize by the concrete discrepancy in elevation to the concrete in the steel baseplate 24 with filling concrete in the steel pipe 41; Because the pressure effect, venthole 3 can pulps, and shutoff is carried out to venthole 3 in the pulp for the treatment of venthole 3 back that meets the requirements.
On the basis of technique scheme, the spacing of two adjacent ventholes 3 is 10cm～20cm, the diameter of venthole 3 is Φ 25mm, and for example, spacing can be 10cm, 11cm, 12cm, 13cm, 14cm, 15cm, 16cm, 17cm, 18cm, 19cm or 20cm.
On the basis of technique scheme, said bamboo chip is the bamboo chip of band certain angle.Said certain angle is meant the front end of bamboo chip and middle part at an angle, and middle part and rear end are level, and the angle at front end and middle part can be guaranteed to insert and smashes fully like this, and gas is discharged by venthole as far as possible.
Find that through actual tests the concrete test piece end face and the steel baseplate that adopt said method to build are closely connected, test block end face bubble accounts for 8% of top surface area, and outward appearance do not have defectives such as voids and pits, and inside concrete is closely knit, meets the pinner force request.Steel baseplate setting accuracy height in actual the use, the pinner concrete compaction is seamless, satisfies the instructions for use of bearing pad stone.Therefore, the steel baseplate of method employing anchor hole of the present invention grouting, bearing is left pore, the self-leveling concrete technology matches, realized bridge pad active controllable in accurate location, installation process, the pinner concrete is built with the steel baseplate of bearing and is integral, the closely connected no gap of its contact surface.And the steel baseplate adjustment of bearing is convenient reliable in work progress, and to steel baseplate position control accuracy height, the pinner concreting method is simple, builds the back concrete compaction, and does not have the gap between steel baseplate.Method of the present invention can be carried out according to following step when reality is implemented: colligation pinner reinforcing bar → installation steel baseplate (containing anchor pole) → installing and locating support → adjust the formal bearing of steel baseplate and fixing → bolthole grouting → installation pinner template → inspection steel baseplate position → build pinner concrete → install by locating support.
Claims (3)
1. the location of a large-scale bridge support and mounting method, it is characterized in that: its concrete steps are:
Step 1, making steel baseplate: said steel baseplate is divided into 9 independent closed area structures by 3 * 3, Φ 300mm blanking hole (1) is reserved at the end face middle part of every independent closed area, every independent closed area around apart from the uniform some ventholes in edge 5cm place (3), coarse aggregate size is adaptive in the size of venthole (3) and the concrete, to guarantee that venthole (3) can not stop up, and also is provided with some crab-bolts (2) on the every independent closed area in concreting;
Step 2, the steel baseplate of accurate positioning support: utilize by level, the locating rack structural framing (21) that vertical adjustable locating support constitutes, the steel baseplate (24) of bearing is accurately located, said level, vertical adjustable locating support is adjusted bolt (22) or is vertically adjusted bolt (23) by some screw rods and plane and cooperates, be anchored on the pre-embedded steel slab of pier top pedestal, utilize the spinning in and out of bolt, adjust spiro rod length, be arranged on the plan-position and the elevation of the steel baseplate (24) of the bearing above the locating rack structural framing (21) with adjustment, make crab-bolt (2) stretch in the anchor hole (34) of pier top pedestal;
Step 3, be in the milk at the anchor hole place: the grouting hose (32) of grout filler loading head (31) is stretched in the anchor hole (34) of pier top pedestal, with crab-bolt (2) and anchor hole (34) fixed be one, crab-bolt (2) is cemented on the pedestal of pier top;
Step 4, build the pinner concrete: pinner template (43) is placed in steel baseplate (24) all around, adopt C50 not have contraction, microdilatancy, self-leveling concrete then and build pinner, pinner is built in the process concrete is slightly vibrated, and is beneficial to the closely knit of position, pinner corner; Slow down when building and build, building the back that finishes and inserting by the bamboo chip level and smashes, gas is discharged by venthole apart from the about 10cm of end face;
Step 5, pressurize and shutoff venthole: pressurize that height 1m diameter is at least 30cm is set with steel pipe (41) building the concrete feed opening of pinner place, pressurize is carried out pressurize by the concrete discrepancy in elevation to the concrete in the steel baseplate (24) with filling concrete in the steel pipe (41); Because the pressure effect, venthole (3) can pulp, and shutoff is carried out to venthole (3) in the pulp for the treatment of venthole (3) back that meets the requirements.
2. the location of large-scale bridge support as claimed in claim 1 and mounting method, it is characterized in that: the spacing of two adjacent ventholes (3) is 10cm～20cm, the diameter of venthole (3) is Φ 25mm.
3. the location of large-scale bridge support as claimed in claim 1 and mounting method is characterized in that: the front end of said bamboo chip and middle part at an angle, middle part and rear end are level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101801425A CN101413249B (en) | 2008-12-01 | 2008-12-01 | Method for positioning and mounting large-scale bridge support |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101801425A CN101413249B (en) | 2008-12-01 | 2008-12-01 | Method for positioning and mounting large-scale bridge support |
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| Publication Number | Publication Date |
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| CN101413249A CN101413249A (en) | 2009-04-22 |
| CN101413249B true CN101413249B (en) | 2010-09-15 |
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| CN2008101801425A Active CN101413249B (en) | 2008-12-01 | 2008-12-01 | Method for positioning and mounting large-scale bridge support |
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| CN101922141B (en) * | 2010-07-16 | 2012-05-23 | 中交第一公路工程局有限公司 | Structure and construction method of bearing pad stone |
| CN101985824B (en) * | 2010-08-23 | 2016-03-30 | 重庆城建控股(集团)有限责任公司 | For the embedded part installation device of bridge pad |
| CN102286926A (en) * | 2011-08-25 | 2011-12-21 | 重庆新科建设工程有限公司 | Mounting process of cast-in-place bridge pot rubber bearing |
| CN102392540B (en) * | 2011-10-24 | 2013-10-16 | 上海城建市政工程（集团）有限公司 | High-precision method and structure for positioning high-precision precast beam |
| CN103161123A (en) * | 2013-03-11 | 2013-06-19 | 浙江海天建设集团有限公司 | Installation structures of piled layer rubber support and flat plate sliding support |
| CN103174234A (en) * | 2013-03-11 | 2013-06-26 | 浙江海天建设集团有限公司 | Construction method of construction damping device |
| CN104179191B (en) * | 2013-05-28 | 2016-08-10 | 中广核工程有限公司 | Nuclear power plant's main equipment basement construction method |
| CN103485539B (en) * | 2013-09-23 | 2015-08-19 | 中国五冶集团有限公司 | The construction control method of large-scale direct burial steel anchor fluke built-in fitting |
| CN104712061B (en) * | 2015-01-22 | 2017-03-15 | 中交第二航务工程局有限公司 | A kind of installation method of large-tonnage spherical bearing |
| CN105200915B (en) * | 2015-07-14 | 2017-05-17 | 中铁大桥勘测设计院集团有限公司 | Bridge deck or rail non-lifting longitudinal movable spherical support for railway bridge and construction method thereof |
| CN105386531A (en) * | 2015-12-01 | 2016-03-09 | 中国建筑第八工程局有限公司 | Locating device used between buttress and vibration insulation support and construction method thereof |
| CN107642035A (en) * | 2017-10-31 | 2018-01-30 | 中铁第四勘察设计院集团有限公司 | A kind of bearing embedded board for large-tonnage support grouting |
| CN107858926B (en) * | 2017-10-31 | 2020-07-24 | 中铁第四勘察设计院集团有限公司 | Large-tonnage support positioning grouting method |
| CN108755395B (en) * | 2018-02-12 | 2019-09-20 | 浙江大学城市学院 | A kind of spherical bearing installation method |
| CN110230259B (en) * | 2018-08-21 | 2021-05-28 | 中铁十八局集团有限公司 | Bridge cantilever casting pier top beam section and rapid construction method thereof |
| CN110485284A (en) * | 2019-08-29 | 2019-11-22 | 苏州交通工程集团有限公司 | A kind of novel base for supporting installation method |
| CN114108447A (en) * | 2021-11-05 | 2022-03-01 | 中国一冶集团有限公司 | Vase pier ball steel support embedded bolt framework and construction method |
| CN114319092A (en) * | 2022-01-14 | 2022-04-12 | 中国铁建大桥工程局集团有限公司 | Connecting device, bridge and mounting method of connecting device |
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Owner name: GROUP CO., LTD., ZHONGTIE DAQIAO BUREAU Free format text: FORMER OWNER: CHINA ZHONGTIE MAJOR BRIDGE ENGINEERING CO., LTD. Effective date: 20150212 |
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Effective date of registration: 20150212 Address after: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 430050 Hanyang Road, Hanyang District, Hubei, No. 38, No. Patentee before: China Zhongtie Major Bridge Engineering Co., Ltd. |