CN102191776A - Structure for underpinning reinforced concrete inner support by profile steels and construction method for same - Google Patents
Structure for underpinning reinforced concrete inner support by profile steels and construction method for same Download PDFInfo
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- CN102191776A CN102191776A CN 201110120733 CN201110120733A CN102191776A CN 102191776 A CN102191776 A CN 102191776A CN 201110120733 CN201110120733 CN 201110120733 CN 201110120733 A CN201110120733 A CN 201110120733A CN 102191776 A CN102191776 A CN 102191776A
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Abstract
The invention belongs to the technical field of building construction, and relates to a structure for underpinning a reinforced concrete inner support by profile steels and a construction method for the same, in particular to a design technology of a building construction method. The structure is characterized in that: four parallel profile steels to bear a force instead of the inner support, so that the purposes of ensuring the normal construction of a primary structure and ensuring the safety and reliability of an inner supporting system are realized. The construction method has the following active effects that: a series of problems (for example, the primary structure cannot be in normal construction until the whole inner support must be removed) caused by the collision of the reinforced concrete inner support and the main structure components are avoided; as the four profile steels bear the force instead of the inner support, the construction can be developed smoothly; and the construction method has the advantages of simplicity, safety, reliably, low cost and practicability.
Description
Technical field
Belong to technical field of building construction, exactly relate to the designing technique of building operations job practices.
Background technology
Along with the increase of skyscraper quantity and height, embedded depth of foundation is also along with increase.Deep basal pit adopts large-span steel-reinforced concrete inner support beam or the supporting of annulus arch reinforced concrete inner support, because they have the correctness aspect calculating, the economy of earthwork construction and the security reliability of Construction practices, so increasing application is arranged in construction.Yet in underground main structure construction, tend to run into the collide problem of resistance of agent structure (post, wall) and interior support.Should guarantee the agent structure normal construction, guarantee that again inner supporting body is safe and reliable, be the difficult problem of construction.
Summary of the invention
The invention provides when resistance is collided in the main structure construction meeting of post, wall and interior support, should guarantee the agent structure normal construction, guarantee that again inner supporting body is safe and reliable a kind ofly to underpin the structure that supports in the steel concrete and its job practices with shaped steel.
The technical scheme that the present invention takes:
A kind of structure with underpinning reinforced concrete inner support by profile steels comprises inner support, and its organization plan is: two piece the be arranged shaped steel parallel with inner support, its parallel aperture for greater than and wrap up the cross-sectional area that the structural column of resistance appears and bump in the inner support place; Above the vertical range of two shaped steel that be arranged in parallel, second group of two shaped steel that be arranged in parallel is set again; Each parallel weldering is put and is connected connection shaped steel with vertical welding between four shaped steel at both ends; The both ends weldering is put four shaped steel that connect shaped steel and all is embedded in the armored concrete buttress; The shaped steel that is embedded in armored concrete buttress place arranges crab-bolt with the surface that is connected shaped steel; Be embedded in the surperficial bar planting of the inner support at armored concrete buttress place; And local explosion prescinds this place's inner support that occurs and bump the resistance structural column.
A kind of construction method with underpinning reinforced concrete inner support by profile steels, according to the following steps operation is implemented:
1) determine can occur and bump in this place that hinders structural column and support,
2) above this inner support, two piece the be arranged shaped steel parallel with this inner support are set, its parallel aperture for greater than and wrap up on the inner support cross-sectional area of the structural column that can occur;
3) above the vertical distance of two shaped steel that be arranged in parallel, second group of two shaped steel that be arranged in parallel is set again;
4) each parallel weldering is put to put with vertical welding and is connected shaped steel between four of both ends shaped steel;
5) both ends welderings is put four shaped steel that connect shaped steel and all is embedded in the steel concrete buttress;
6) shaped steel that is embedded in armored concrete buttress place arranges crab-bolt with the surface that is connected shaped steel;
7) be embedded in the interior stayed surface bar planting at steel concrete buttress place;
8) local explosion cuts this place's inner support that the resistance structural column can occur and bump.
Implementing good effect of the present invention is:
By enforcement of the present invention, guaranteed that under the prerequisite of main component normal construction, four shaped steel have substituted the transmission of reinforced concrete inner support power, have guaranteed its safety.Avoided the series of problems that produces because reinforced concrete inner support collides resistance with the agent structure member, must wait until that such as agent structure inner support integral body abolishes the ability normal construction; Now stressed with four shaped steel replacement inner supports, that just can guarantee to construct carries out smoothly, and method is simple, and is safe and reliable, and cost is low, is the construction method of a practicality.
Description of drawings
Fig. 1 is the present invention's top view of constructing
Fig. 2 is the 1-1 sectional drawing among Fig. 1
Fig. 3 is the 2-2 sectional drawing among Fig. 1
The specific embodiment
Now the invention will be further described by reference to the accompanying drawings
A kind of structure with underpinning reinforced concrete inner support by profile steels comprises inner support 1, and its formation is: two piece the be arranged shaped steel 2 parallel with inner support 1, its parallel aperture for greater than and wrap up the cross-sectional area that the structural column 3 of resistance appears and bump in the inner support place; Above the vertical range of two shaped steel that be arranged in parallel, second group two shaped steel 4 that be arranged in parallel are set again; Each parallel weldering is put to be connected with vertical welding and is connected shaped steel 5 between four shaped steel at both ends; The both ends weldering is put four shaped steel that connect shaped steel and all is embedded in the armored concrete buttress 6; The shaped steel 2 that is embedded in armored concrete buttress 6 places arranges crab-bolt 7 with the surface that is connected shaped steel 5; Be embedded in the surperficial bar planting 8 of the inner support 1 at armored concrete buttress 6 places; And local explosion prescinds this place's inner support 9 that occurs and bump resistance structural column 3.
Described shaped steel is the shaped steel that the surface is provided with the shearing resistance crab-bolt.
A kind of construction method with underpinning reinforced concrete inner support by profile steels, according to the following steps operation is implemented:
1) determine can occur and bump in this place that hinders structural column and support,
2) above this inner support, two piece the be arranged shaped steel parallel with this inner support are set, its parallel aperture for greater than and wrap up on the inner support cross-sectional area of the structural column that can occur;
3) above the vertical distance of two shaped steel that be arranged in parallel, second group of two shaped steel that be arranged in parallel is set again;
4) each parallel weldering is put to put with vertical welding and is connected shaped steel between four of both ends shaped steel;
5) both ends welderings is put four shaped steel that connect shaped steel and all is embedded in the steel concrete buttress;
6) shaped steel that is embedded in armored concrete buttress place arranges crab-bolt with the surface that is connected shaped steel;
7) be embedded in the interior stayed surface bar planting at steel concrete buttress place;
8) local explosion cuts this place's inner support that the resistance structural column can occur and bump.
Embodiment
Square, greenery patches, Zhengzhou (exhibitions hotel, Zhengzhou)
Square, greenery patches (exhibitions hotel, Zhengzhou) engineering is positioned at the CBD of Zhengzhou City central plaza, and inner ring road north, arts center east are that collection commerce, office, deluxe hotel, sightseeing tour etc. are multi-functional is the comprehensive building of one.Underground 4 layers of engineering, 61 layers on the ground, 3 layers on the ground of podiums, 280 meters of total heights, overall floorage 240000m
2Main building except that the partial bottom absolute altitude be-22.6m and dell at the bottom of absolute altitude-26.5m ,-27.5m, all the other are-21.4m.
Foundation pit supporting system selects support pile to add the inner support scheme of reinforced concrete circle beam and brace summer, foundation ditch inherence-6.8 meter, and-11.7 meters ,-16.6 meters absolute altitude places establish three road reinforced concrete inner supports.
Inner support had been constructed and has been finished when this engineering went out the main building drawing owing to designing institute, finished at big construction of bottom plates, had produced the problem that main building exterior frame column and inner support are collided and hindered during the construction basement structure.In order to ensure the engineering construction progress, the main building main body must partly be constructed prior to podium, can not abolish and podium is not finished inner support.For guaranteeing project progress and inner support system safety, determine to adopt shaped steel that local inner support is reinforced, abolish then reinforcing place concrete inner support, make main building structure housing trestle can pass inner support and follow the Core Walls Structure construction closely.
Claims (3)
1. one kind underpins the structure that supports in the steel concrete with shaped steel, comprise interior support (1), it is characterized in that: two piece the be arranged shaped steel (2) parallel with interior support (1), its parallel aperture is for the cross-sectional area of the structural column (3) of resistance occurring and bump greater than support place in also wrapping up; Above the vertical distance of two shaped steel that be arranged in parallel, second group two shaped steel that be arranged in parallel (4) are set again; Each parallel weldering is put to put with vertical welding and is connected shaped steel (5) between four shaped steel at both ends; The both ends weldering is put four shaped steel that connect shaped steel and all is embedded in the steel concrete buttress (6); Be embedded in the shaped steel (2) that steel concrete buttress (6) locates and crab-bolt (7) be set with the surface that is connected shaped steel (5); Be embedded in the surperficial bar planting (8) of the interior support (1) that steel concrete buttress (6) locates; And local explosion prescinds appearance and bumps support (9) in this place that hinders structural column (3).
2. according to claim 1ly a kind ofly underpin the structure that supports in the steel concrete with shaped steel, it is characterized in that: described shaped steel is the shaped steel that the surface is provided with the shearing resistance crab-bolt.
3. construction method with underpinning reinforced concrete inner support by profile steels, according to the following steps operation is implemented:
1) determine can occur and bump in this place that hinders structural column and support,
2) above this inner support, two piece the be arranged shaped steel parallel with this inner support are set, its parallel aperture for greater than and wrap up on the inner support cross-sectional area of the structural column that can occur;
3) above the vertical distance of two shaped steel that be arranged in parallel, second group of two shaped steel that be arranged in parallel is set again;
4) each parallel weldering is put to put with vertical welding and is connected shaped steel between four of both ends shaped steel;
5) both ends welderings is put four shaped steel that connect shaped steel and all is embedded in the steel concrete buttress;
6) shaped steel that is embedded in armored concrete buttress place arranges crab-bolt with the surface that is connected shaped steel;
7) be embedded in the interior stayed surface bar planting at steel concrete buttress place;
8) local explosion cuts this place's inner support that the resistance structural column can occur and bump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110120733 CN102191776A (en) | 2011-05-11 | 2011-05-11 | Structure for underpinning reinforced concrete inner support by profile steels and construction method for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110120733 CN102191776A (en) | 2011-05-11 | 2011-05-11 | Structure for underpinning reinforced concrete inner support by profile steels and construction method for same |
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| CN102191776A true CN102191776A (en) | 2011-09-21 |
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| CN 201110120733 Pending CN102191776A (en) | 2011-05-11 | 2011-05-11 | Structure for underpinning reinforced concrete inner support by profile steels and construction method for same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421466A (en) * | 2015-11-26 | 2016-03-23 | 中国建筑第八工程局有限公司 | Underpinning construction method and underpinning device for temporary latticed column |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118036A (en) * | 1991-10-30 | 1993-05-14 | Toda Constr Co Ltd | Waling material |
| KR100841979B1 (en) * | 2007-11-13 | 2008-06-27 | 이태영 | Cydlinder type jack |
| CN101476331A (en) * | 2007-12-12 | 2009-07-08 | 中国二十冶建设有限公司 | Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch |
| CN202055250U (en) * | 2011-05-11 | 2011-11-30 | 中天建设集团有限公司 | Structure replacing reinforced concrete inner support by section steel |
-
2011
- 2011-05-11 CN CN 201110120733 patent/CN102191776A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05118036A (en) * | 1991-10-30 | 1993-05-14 | Toda Constr Co Ltd | Waling material |
| KR100841979B1 (en) * | 2007-11-13 | 2008-06-27 | 이태영 | Cydlinder type jack |
| CN101476331A (en) * | 2007-12-12 | 2009-07-08 | 中国二十冶建设有限公司 | Closed demolition blasting method for internal concrete reinforcement bracing of basement foundation ditch |
| CN202055250U (en) * | 2011-05-11 | 2011-11-30 | 中天建设集团有限公司 | Structure replacing reinforced concrete inner support by section steel |
Non-Patent Citations (2)
| Title |
|---|
| 《建筑施工》 20100731 徐立胜等人 钢筋混凝土内支撑用型钢托换进行局部爆破的施工技术 第32卷, 第7期 * |
| 《施工技术》 20100531 楼永良等人 郑州绿地广场基坑支撑替换技术 第39卷, 第5期 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421466A (en) * | 2015-11-26 | 2016-03-23 | 中国建筑第八工程局有限公司 | Underpinning construction method and underpinning device for temporary latticed column |
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Application publication date: 20110921 |