CN105839920A - Construction method for station-end temporary steel support replacement - Google Patents
Construction method for station-end temporary steel support replacement Download PDFInfo
- Publication number
- CN105839920A CN105839920A CN201610377579.2A CN201610377579A CN105839920A CN 105839920 A CN105839920 A CN 105839920A CN 201610377579 A CN201610377579 A CN 201610377579A CN 105839920 A CN105839920 A CN 105839920A
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- support
- cast
- bearing
- situ continuous
- support system
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G25/00—Shores or struts; Chocks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a construction method for station-end temporary steel support replacement. A second supporting system is arranged on one side of a first supporting system which bears cast-in-situ continuous beams; jacks on the first supporting system jack up the cast-in-situ continuous beams to realize arrangement of temporary supporting seats on the second supporting system, gaps between the temporary supporting seats and the cast-in-situ continuous beams are filled by steel plates, and the beams are descended slowly to complete first-time supporting system replacement; a third supporting system on a bearing platform is constructed, jacks on the third supporting system jack up the cast-in-situ continuous beams to realize arrangement of supporting seats on the third supporting system, steel plates are placed to fill gaps between the supporting seats and the cast-in-situ continuous beams, and the beams are descended slowly to complete second-time supporting system replacement. By the construction method, twice stress conversion in a steel support replacement process can be guaranteed, safety in the steel support replacement process is guaranteed, and accordingly stability and reliability of station ends after replacement are further guaranteed.
Description
Technical field
The invention belongs to end temporary steel support support replacement technical field of standing, be specifically related to the construction method of a kind of end temporary steel support support replacement of standing.
Background technology
When closing on the in-situ beam casting at station, station structure has to construction to station hall layer, end, station is positioned at above station hall layer for the bracket supporting Cast-in-situ Beam, miss the stop needs according to beam car, in the case of bracket is not constructed, beam body is held up by the bracing members that Cast-in-situ Beam temporarily uses arrangement form to be single nine, after prefabricated box beam is all transported and set up, station end position is constructed bracket component again, is then fallen within the bracket that station is stretched out the end of continuous beam.
In order to ensure beam car stablizing through temporary steel support beam body stress, and can there be reliable and stable temporary support beam body end during construction in later period bracket, the arrangement form of single nine bracing members is changed to double 10, but lack the construction method of bracing members support replacement at present, it is impossible to complete more reliable and more stable bracing members.
Summary of the invention
In view of this, present invention is primarily targeted at the construction method of a kind of end temporary steel support support replacement of standing is provided.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The embodiment of the present invention provides the construction method of a kind of end temporary steel support support replacement of standing, and the method is realized by following steps:
Step one: the second support system is set in the side of the first support system bearing cast-in-situ continuous beam weight；
Step 2: prop up cast-in-situ continuous beam by the jack on the first support system, then temporary support is set on described second bearing system, and place steel plate for the space filling up between temporary support and cast-in-situ continuous beam, now, slowly fall beam body after rise, the load-bearing making described cast-in-situ continuous beam is positioned on described second support system, completes bearing system conversion for the first time；
Step 3: remove described first support system and be excavated to be positioned at the cushion cap face of platform drilled pile, afterwards, carrying out the construction of the 3rd support system on described cushion cap face；
Step 4: after described 3rd support system construction, cast-in-situ continuous beam is propped up by the jack on described 3rd support system, then bearing is set on described 3rd bearing system, and place steel plate for the space filling up between bearing and cast-in-situ continuous beam, now, slowly fall beam body after rise so that the load-bearing of described cast-in-situ continuous beam is positioned on described 3rd support system, complete second time bearing system conversion；
Step 5: remove described second support system.
In such scheme, described first support system is nine steel support structures of single setting.
In such scheme, described second support system is 2 steel support structures of single setting and reinforces diagonal brace.
In such scheme, described 3rd support system is ten steel support structures of double setting.
In such scheme, 2 steel support structures of described second support system are arranged on original ground and extend to 40 meters, underground.
In such scheme, described jack is four groups of 200t jack, is laid in both sides of the edge 20cm at the bottom of the beam of distance cast-in-situ continuous beam.
In such scheme, described cast-in-situ continuous beam is less than or equal to 1cm by jack stand, the settling data of the most static observation beam body, after determining situation without exception, then carries out placing steel plate for filling up the space between temporary support or bearing and cast-in-situ continuous beam and slowly falling beam body after rise.
Compared with prior art, beneficial effects of the present invention:
The present invention is able to ensure that the two times transfer of stress during bracing members support replacement, it is ensured that the security of support replacement process, and then ensures the reliable and stable of the station end after changing into.
Accompanying drawing explanation
Fig. 1 provides the initial schematic diagram of a kind of end temporary steel support support replacement of standing for the embodiment of the present invention；
Fig. 2 provides the schematic diagram of the step one of the construction method of a kind of end temporary steel support support replacement of standing for the embodiment of the present invention；
Fig. 3 provides the schematic diagram of the step 3 of the construction method of a kind of end temporary steel support support replacement of standing for the embodiment of the present invention
Fig. 4 provides the schematic diagram of the step 5 of the construction method of a kind of end temporary steel support support replacement of standing for the embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention provides the construction method of a kind of end temporary steel support support replacement of standing, and as Figure 1-4, the method is realized by following steps:
Step one: the second support system is set in the side of the first support system bearing cast-in-situ continuous beam weight, as shown in Figure 1, 2；
Step 2: prop up cast-in-situ continuous beam by the jack on the first support system, then temporary support is set on described second bearing system, and place steel plate for the space filling up between temporary support and cast-in-situ continuous beam, now, slowly fall beam body after rise, the load-bearing making described cast-in-situ continuous beam is positioned on described second support system, completes bearing system conversion for the first time；
Step 3: remove described first support system and be excavated to be positioned at the cushion cap face of platform drilled pile, afterwards, carries out the construction of the 3rd support system, as shown in Figure 3 on described cushion cap face；
Step 4: after described 3rd support system construction, by described theThreeCast-in-situ continuous beam propped up by jack on support system, then bearing is set on described 3rd bearing system, and place steel plate for the space filling up between bearing and cast-in-situ continuous beam, now, slowly fall beam body after rise, the load-bearing making described cast-in-situ continuous beam is positioned on described 3rd support system, completes second time bearing system conversion；
Step 5: remove described second support system, as shown in Figure 4.
Described first support system is nine steel support structures of single setting.
Described second support system is 2 steel support structures of single setting and reinforces diagonal brace.
Described 3rd support system is ten steel support structures of double setting.
2 steel support structures of described second support system are arranged on original ground and extend to 40 meters, underground.
Described jack is four groups of 200t jack, is laid in both sides of the edge 20cm at the bottom of the beam of distance cast-in-situ continuous beam.
Described cast-in-situ continuous beam, after determining situation without exception then is carried out placing steel plate for filling up the space between temporary support or bearing and cast-in-situ continuous beam and slowly falling beam body after rise less than or equal to 1cm, the settling data of the most static observation beam body by jack stand.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (7)
1. the construction method of an end temporary steel support support replacement of standing, it is characterised in that the method is realized by following steps:
Step one: the second support system is set in the side of the first support system bearing cast-in-situ continuous beam weight；
Step 2: prop up cast-in-situ continuous beam by the jack on the first support system, then temporary support is set on described second bearing system, and place steel plate for the space filling up between temporary support and cast-in-situ continuous beam, now, slowly fall beam body after rise, the load-bearing making described cast-in-situ continuous beam is positioned on described second support system, completes bearing system conversion for the first time；
Step 3: remove described first support system and be excavated to be positioned at the cushion cap face of platform drilled pile, afterwards, carrying out the construction of the 3rd support system on described cushion cap face；
Step 4: after described 3rd support system construction, cast-in-situ continuous beam is propped up by the jack on described 3rd support system, then bearing is set on described 3rd bearing system, and place steel plate for the space filling up between bearing and cast-in-situ continuous beam, now, slowly fall beam body after rise so that the load-bearing of described cast-in-situ continuous beam is positioned on described 3rd support system, complete second time bearing system conversion；
Step 5: remove described second support system.
The construction method of station the most according to claim 1 end temporary steel support support replacement, it is characterised in that: described first support system is nine steel support structures of single setting.
The construction method of station the most according to claim 1 and 2 end temporary steel support support replacement, it is characterised in that: described second support system is 2 steel support structures of single setting and reinforces diagonal brace.
The construction method of station the most according to claim 3 end temporary steel support support replacement, it is characterised in that: described 3rd support system is ten steel support structures of double setting.
The construction method of station the most according to claim 4 end temporary steel support support replacement, it is characterised in that: 2 steel support structures of described second support system are arranged on original ground and extend to 40 meters, underground.
The construction method of station the most according to claim 5 end temporary steel support support replacement, it is characterised in that: described jack is four groups of 200t jack, is laid in both sides of the edge 20cm at the bottom of the beam of distance cast-in-situ continuous beam.
The construction method of station the most according to claim 6 end temporary steel support support replacement, it is characterized in that: described cast-in-situ continuous beam is less than or equal to 1cm by jack stand, the settling data of the most static observation beam body, after determining situation without exception, then carry out placing steel plate for filling up the space between temporary support or bearing and cast-in-situ continuous beam and slowly falling beam body after rise.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610377579.2A CN105839920B (en) | 2016-05-31 | 2016-05-31 | The construction method for end temporary steel support support replacement of standing |
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| CN201610377579.2A CN105839920B (en) | 2016-05-31 | 2016-05-31 | The construction method for end temporary steel support support replacement of standing |
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| CN105839920A true CN105839920A (en) | 2016-08-10 |
| CN105839920B CN105839920B (en) | 2017-10-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437157A (en) * | 2016-11-11 | 2017-02-22 | 上海市机械施工集团有限公司 | Axial force grouping and regulating method for steel support structure |
| CN109457708A (en) * | 2018-12-14 | 2019-03-12 | 中冶天工集团有限公司 | The construction method of temporary support in a kind of deep foundation ditch concrete structure construction procedure |
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| JP4191235B1 (en) * | 2007-12-28 | 2008-12-03 | 株式会社Ｊｕｓｔ．Ｗｉｌｌ | Temporary support joint, temporary structure, and multi-story slab construction method |
| CN201762667U (en) * | 2010-09-16 | 2011-03-16 | 中铁十九局集团第二工程有限公司 | Fine adjustment system for moving beam |
| CN103075163A (en) * | 2012-12-28 | 2013-05-01 | 成都中铁隆工程集团有限公司 | Support change process of second liner construction of large-cross-section tunnel |
| CN104141383A (en) * | 2014-07-16 | 2014-11-12 | 北京万兴建筑集团有限公司 | Bailey beam suspension formwork supporting system and construction method thereof |
| CN105507168A (en) * | 2015-12-30 | 2016-04-20 | 中交第三航务工程局有限公司 | Multi-span box girder integral ultrahigh alternate jacking construction system and method |
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| JP2001159232A (en) * | 1999-12-01 | 2001-06-12 | Hitachi Building Systems Co Ltd | Moving scaffold device and installation method using moving scaffold device |
| JP4191235B1 (en) * | 2007-12-28 | 2008-12-03 | 株式会社Ｊｕｓｔ．Ｗｉｌｌ | Temporary support joint, temporary structure, and multi-story slab construction method |
| CN201762667U (en) * | 2010-09-16 | 2011-03-16 | 中铁十九局集团第二工程有限公司 | Fine adjustment system for moving beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106437157A (en) * | 2016-11-11 | 2017-02-22 | 上海市机械施工集团有限公司 | Axial force grouping and regulating method for steel support structure |
| CN106437157B (en) * | 2016-11-11 | 2020-02-21 | 上海市机械施工集团有限公司 | Grouping regulation and control method for axial force of steel support structure |
| CN109457708A (en) * | 2018-12-14 | 2019-03-12 | 中冶天工集团有限公司 | The construction method of temporary support in a kind of deep foundation ditch concrete structure construction procedure |
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| CN105839920B (en) | 2017-10-20 |
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