CN102900241A - Integrated construction method for nodes of 'new beam and old column' in reconstruction of concrete structure - Google Patents
Integrated construction method for nodes of 'new beam and old column' in reconstruction of concrete structure Download PDFInfo
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- CN102900241A CN102900241A CN2012104162877A CN201210416287A CN102900241A CN 102900241 A CN102900241 A CN 102900241A CN 2012104162877 A CN2012104162877 A CN 2012104162877A CN 201210416287 A CN201210416287 A CN 201210416287A CN 102900241 A CN102900241 A CN 102900241A
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Abstract
The invention relates to an integrated construction method for nodes of 'new beam and old column' in reconstruction of a concrete structure, which comprises the following steps: firstly, calculating and confirming the size of a latticed column required by stress replacement according to a load endured by an existing structural column; secondly, performing stress conversion on a beam bottom mounted latticed column connected with the existing structural column in each layer from a to-be reconstructed added floor to the upper layer till reaching a roof, temporarily replacing the existing structural column by the latticed column, thereby forming a new vertical stress system; and lastly, chiseling away the concrete at a joint of the existing structural column and the new beam, anchoring a new beam reinforcing bar into the existing structural column, and then wholly pouring and smashing the concrete again. According to the integrated construction method provided by the invention, after the sizing latticed column is used for temporarily replacing the existing structural column and forming the stress system, the local old column concrete is chiseled away, and the nodes of the 'new beam and old column' are integrally poured after the new beam reinforcing bar is anchored into the old column, and the existing structure, such as the beam and plate originally passing by the old column on the upper part of a reconstructed area, need not be detached in advance. During the structure reconstruction process, the existing structure beyond the reconstructed area can be normally used all the time.
Description
Technical field
The present invention relates to a kind of construction technology of reinforced concrete structure alteration work, be specially adapted to integral body and add layer or the local Multi-Storey Reinforced Concrete Structures alteration work that adds layer, solve the bean column node construction difficult problem of newly-built beam slab and existing structure post.
Background technology
Add in layer or the local concrete structure alteration work that adds layer in integral body, need newly-built concrete beam plate is connected with the existing concrete structure post.In work progress, as why not affecting the normal use of existing structure and satisfy newly-built bean column node shockproof requirements, become the construction difficult problem that the restriction alteration work is carried out smoothly.
Summary of the invention
The present invention solves " the new old post of beam " node construction difficult problem in the reinforced concrete structure alteration work, and existing structure keeps normally using during guaranteeing reconstruction, and the node integral construction method of " the new old post of beam " in a kind of concrete structure reconstruction is provided.
For solving technical problem of the present invention, the technical scheme that adopts is as follows:
The node integral construction method of " the new old post of beam " in a kind of concrete structure reconstruction, key step is as follows:
1) load conversion: according to the specification of transforming regional beam slab load and service load calculative determination lattice column, lattice column is installed in 1 end of existing structure beam that links to each other with the existing structure post, connect with horizontal connector between lattice column, replace the existing structure post and form the vertical applied force system;
2) " new the old post of beam " node integrated construction: cut existing structure post and Xin Liang junction concrete, new beam steel is anchored into disturbing concrete behind the existing structure post, newly water after the structure of smashing reaches design strength, remove the lattice column recycling.
When the non-structure bottom of storey-adding reconstruction floor, existing structure is not produced when guaranteeing interim vertical applied force system going down load that lattice column forms and destroy, add carriage at 1 end of existing structure beam of transforming one deck under the floor and reinforce as interim according to calculating.
, top existing structure post higher when floor conducted oneself with dignity when not satisfying the loadometer calculation, adds interim bracket and reinforce between the last layer lattice column of transforming floor and existing structure post, and bracket adopts electric welding to be connected with lattice column, fixes with existing structure post employing chemical anchor bolts.
The invention has the beneficial effects as follows:
The present invention adopts " the new old post of beam " node integrated construction technique to carry out the job practices of structure reconstruction, utilize the typing lattice column substitute temporarily the existing structure post as the load system after, directly cut local old post concrete, new beam steel is anchored into integrated building behind the old post " the new old post of beam " node, and need not to remove in advance the existing structures such as the beam transforming regional top and originally pass old post, plate.During the structure of modification, can continue to keep normal the use except transforming extra-regional existing structure.
Description of drawings
Fig. 1 is interim load system floor map;
Fig. 2 is interim load system generalized section;
Fig. 3 changes the post generalized section;
Fig. 4 adds carriage at the bottom of the existing structure beam as the interim schematic diagram of reinforcing;
Fig. 5 adds interim bracket to reinforce schematic diagram between last layer lattice column and the existing structure post.
The specific embodiment
Such as Fig. 1, shown in 2,3, the node integral construction method of " the new old post of beam " in the reconstruction of a kind of concrete structure, at first, the load calculative determination of bearing according to the existing structure post carries out the lattice column specification of stressed replacement needs; Secondly, the floor that adds layer from the need reconstruction is all installed lattice column for every layer and is carried out the load conversion up to top board at the bottom of the beam that connects the existing structure post so that lattice column temporarily alternative existing structure post form new vertical applied force system; At last, cut the existing structure post at the concrete of Xin Liang junction, new beam steel is anchored into behind the existing structure post again whole disturbing concrete.
Adopt " the new old post of beam " node integrated construction technique to carry out structure reconstruction construction, key step is as follows:
1) load conversion: according to the specification of transforming regional beam slab load and service load calculative determination lattice column 3, lattice column 3 is installed in 1 end of existing structure beam that links to each other with existing structure post 2,3 of lattice columns connect with horizontal connector 4, replace existing structure post 2 and form the vertical applied force systems.
2) " the new old post of beam " node integrated construction: cut existing structure post 2 and with new beam 5 junction concrete 6 new beam 5 reinforcing bars are anchored into existing structure post 2 rear disturbing concretes.During the structure of modification, lattice column 3 guarantees use and the security performance of original structure as interim vertical applied force system.Newly water after the structure of smashing reaches design strength, remove lattice column 3 and recycle.
If carry out the non-structure bottom of storey-adding reconstruction floor, existing structure is not produced when guaranteeing interim vertical applied force system going down load that lattice column 3 forms and destroy, add carriage 7 as interim reinforcing, as shown in Figure 4 according to calculating at 1 end of existing structure beam of transforming one deck under the floor.
, top existing structure post higher when floor conducted oneself with dignity when not satisfying the loadometer calculation, as shown in Figure 5, add interim bracket 8 and reinforce between the last layer lattice column 3 of transforming floor and existing structure post 2, bracket 8 adopts electric welding to be connected with lattice column 3, adopts chemical anchor bolts 9 fixing with existing structure post 2.
Claims (3)
1. the node integral construction method of " the new old post of beam " is characterized in that during a concrete structure was reconstructed, and concrete steps are as follows:
1) load conversion: according to the specification of transforming regional beam slab load and service load calculative determination lattice column (3), lattice column (3) is installed in existing structure beam (1) end that links to each other with existing structure post (2), connect with horizontal connector (4) between lattice column (3), replace existing structure post (2) and form the vertical applied force system;
2) " the new old post of beam " node integrated construction: cut existing structure post (2) and new beam (5) junction concrete (6), new beam (5) reinforcing bar is anchored into the rear disturbing concrete of existing structure post (2), newly water after the structure of smashing reaches design strength, remove lattice column (3) and recycle.
2. the node integral construction method of " the new old post of beam " during concrete structure according to claim 1 is reconstructed, it is characterized in that: when the non-structure bottom of storey-adding reconstruction floor, existing structure is not produced when guaranteeing interim vertical applied force system going down load that lattice column (3) forms and destroy, add carriage (7) as reinforce temporarily according to calculating at existing structure beam (1) end of transforming one deck under the floor.
3. the node integral construction method of " the new old post of beam " during concrete structure according to claim 1 is reconstructed, it is characterized in that:, top existing structure post higher when floor conducted oneself with dignity when not satisfying the loadometer calculation, adding interim bracket (8) between the last layer lattice column (3) of transforming floor and existing structure post (2) reinforces, bracket (8) adopts electric welding to be connected with lattice column (3), adopts chemical anchor bolts (9) fixing with existing structure post (2).
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| CN2012104162877A CN102900241A (en) | 2012-10-26 | 2012-10-26 | Integrated construction method for nodes of 'new beam and old column' in reconstruction of concrete structure |
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| CN2012104162877A CN102900241A (en) | 2012-10-26 | 2012-10-26 | Integrated construction method for nodes of 'new beam and old column' in reconstruction of concrete structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675140A (en) * | 2015-02-27 | 2015-06-03 | 攀钢集团工程技术有限公司 | Newly-added bearing column mounting and roof truss load transferring method |
| CN105888278A (en) * | 2015-12-31 | 2016-08-24 | 上海建工七建集团有限公司 | Framework girder dismantling construction method under condition of upper structure building completion |
| CN106401207A (en) * | 2016-10-13 | 2017-02-15 | 浙江杰地建筑设计有限公司 | Superimposed connection structure for additionally arranging column foundation on existing building and construction method of superimposed connection structure |
| CN111041989A (en) * | 2019-12-12 | 2020-04-21 | 上海市基础工程集团有限公司 | Rapid installation method of prefabricated assembled bridge |
| CN112031451A (en) * | 2019-06-03 | 2020-12-04 | 武汉中合元创建筑设计股份有限公司 | Structure reinforcing method |
| CN115538813A (en) * | 2022-12-01 | 2022-12-30 | 北京市第三建筑工程有限公司 | Construction method for installing stand column on existing stand column under condition of not dismantling existing inclined column |
| CN117144977A (en) * | 2023-10-26 | 2023-12-01 | 上海建工集团股份有限公司 | Method for constructing residential building basement by reverse construction method column drawing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675140A (en) * | 2015-02-27 | 2015-06-03 | 攀钢集团工程技术有限公司 | Newly-added bearing column mounting and roof truss load transferring method |
| CN105888278A (en) * | 2015-12-31 | 2016-08-24 | 上海建工七建集团有限公司 | Framework girder dismantling construction method under condition of upper structure building completion |
| CN106401207A (en) * | 2016-10-13 | 2017-02-15 | 浙江杰地建筑设计有限公司 | Superimposed connection structure for additionally arranging column foundation on existing building and construction method of superimposed connection structure |
| CN106401207B (en) * | 2016-10-13 | 2019-04-02 | 浙江杰地建筑设计有限公司 | The overlapping connection structure and its construction method on pillar basis are added for existing building |
| CN112031451A (en) * | 2019-06-03 | 2020-12-04 | 武汉中合元创建筑设计股份有限公司 | Structure reinforcing method |
| CN111041989A (en) * | 2019-12-12 | 2020-04-21 | 上海市基础工程集团有限公司 | Rapid installation method of prefabricated assembled bridge |
| CN115538813A (en) * | 2022-12-01 | 2022-12-30 | 北京市第三建筑工程有限公司 | Construction method for installing stand column on existing stand column under condition of not dismantling existing inclined column |
| CN117144977A (en) * | 2023-10-26 | 2023-12-01 | 上海建工集团股份有限公司 | Method for constructing residential building basement by reverse construction method column drawing |
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Application publication date: 20130130 |