CN106593006A - Strengthening method for resisting progressive collapse through steel frame structure - Google Patents
Strengthening method for resisting progressive collapse through steel frame structure Download PDFInfo
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- CN106593006A CN106593006A CN201611126719.5A CN201611126719A CN106593006A CN 106593006 A CN106593006 A CN 106593006A CN 201611126719 A CN201611126719 A CN 201611126719A CN 106593006 A CN106593006 A CN 106593006A
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- Prior art keywords
- steel
- rib
- progressive collapse
- post
- pillar
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Classifications
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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
- E04G23/00—Working measures on existing buildings
- E04G23/04—Propping of endangered or damaged buildings or building parts, e.g. with respect to air-raid action
Abstract
The invention provides a strengthening method for resisting progressive collapse through a steel frame structure. Through the design method for resisting progressive collapse in the standard, the position of a key pillar is determined. After the key pillar is chosen and determined, the key pillar is assumed as a destroyed steel pillar, and single oblique ribs or double oblique ribs are additionally arranged on joist steel of the two sides of the destroyed steel pillar. The pressure arching effect of the key pillar position is reinforced, and the redundancy degree and the progressive collapse resistance property of a newly-built building are improved. Or after a weak pillar or a destroyed pillar is known through exploration and observation, the weak pillar or the destroyed pillar is assumed as the destroyed steel pillar. According to the arrangement conditions of building components and site conditions of construction, the single oblique ribs or the double oblique ribs are chosen for strengthening, and strengthening for progressive collapse resistance is achieved. The strengthening method for resisting progressive collapse through the steel frame structure is simple in design and mounting and good in economic benefits. Oblique ribs and regular stress components are not superimposed, so that the strengthening method for resisting progressive collapse through the steel frame structure is applied to a newly-built structure, strengthening reconstruction of an existing structure, a full welding beam pillar joint point, and an end plate connecting beam pillar joint point.
Description
Technical field
The invention belongs to building structure technology field, and in particular to one kind adopts steel frame construction progressive collapse-resisting reinforcing side
Method.
Background technology
Steel construction has the advantages that deadweight is light, construction is fast and anti-seismic performance is superior.Tie compared to xoncrete structure and masonry
Structure has more preferable deformability and Hysteresis Behavior, has more superior performance under geological process and percussion.But phase
Than in concrete frame structure, Fire Resistance of Steel Frames is poor, the safety stock under special load effect is relatively low, once receive
To the special load such as blast, earthquake or vehicle crash effect when, easily cause crucial post or key node bearing capacity
Forfeiture, and then cause Progressive Collapse.In the progressive collapse-resisting design of structure, after vertical supporting member is destroyed, no matter
It is to focus on " drawknot intensity method " that overall performance " alternative route method " is still conceived to Local Members, girder steel and steel column node are all
The highly important role of performer.Whether inside configuration there is enough effective internal force to fill distribution path, determines and is becoming greatly
Whether " catenary action " can effectively form under shape, therefore to existed building and the progressive collapse-resisting reinforcement measure of new building
Become particularly significant.When common reinforcement measure is often through damaged structure generation moderate finite deformation after post failure is conceived to, to " modeling
Property hinge mechanism "（Replace path method）" catenary mechanism "（Drawknot intensity method）Reinforced, and often have ignored concrete frame
The structural column destruction initial stage is distinctive " pressure arching " in frame and steel-concrete group frame.When crucial post failure in frame structure
Afterwards, the active phase of " pressure arching " prior to " plastic hinge mechanism ", therefore will be wanted in terms of the initial deformation of control damaged structure
Advantageously, the extra time can be provided for evacuating personnel, advantageously reduces the panic sense of personnel.
The content of the invention
It is an object of the invention to provide a kind of adopt steel frame construction progressive collapse-resisting reinforcement means, to solve steel-frame structure
Cannot be formed " pressure arching ", improve existing traditional progressive collapse-resisting reinforcement measure at present and initial damage structure is destroyed to structural column
The problem of Deformation control.
To achieve these goals, the technical solution used in the present invention is：
One kind adopts steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that comprise the following steps：
For new building, the position of crucial post is determined by the progressive collapse-resisting method for designing in specification first, select key post
Afterwards, by it is assumed that destruction steel column, welding increase monocline rib or diclinic rib on the both sides joist steel of destruction steel column, strengthen crucial post
Pressure arching at position, improves the redundancy and progressive collapse-resisting ability of new building；
For existed building, after the post by reconnoitring the weak post of observation understanding or to there is breakoff phenomenon, by it is assumed that destruction
Steel column, depending on building member situation and job site situation are arranged, select monocline rib reinforcement or diclinic rib reinforcement, are realized to existing
The progressive collapse-resisting of building is reinforced.
The pressure arching at key post locations is closed in described enhancing, implement structure by do not destroy steel column, destruction steel column, diagonal rib,
Ribbed stiffener and girder steel are constituted on post, are not destroyed steel column and are connected by girder steel with destruction steel column, and ribbed stiffener and steel column is not destroyed on post
Connect with destruction steel column, diagonal rib is connected with girder steel, diagonal rib inner side is connected with the web of girder steel, and the two ends of diagonal rib should be right with girder steel
Lower flange connection at position is answered, and near girder steel and steel column junction, it is to avoid participate in early stage stress.
The inner side of described diagonal rib is connected with the web of girder steel using welding manner, tilting section and the bottom wing on girder steel of diagonal rib
Edge contact site is fixed using welding manner.
The pressure arching at key post locations is closed in described enhancing, it is characterised in that implement structure by not destroying steel column, destruction
Ribbed stiffener and girder steel are constituted on steel column, diclinic rib, post, are not destroyed steel column and are connected by girder steel with destruction steel column, ribbed stiffener on post
It is connected with not destroying steel column and destroying steel column, diclinic rib is connected with girder steel, the strong weld such as the inner side of diclinic rib and the web of girder steel,
The two ends of diclinic rib respectively with the strong weld such as the upper lower flange of girder steel.
Described steel column, girder steel, diagonal rib, end plate and diclinic rib using Q235 steel or Q345 steel or Q390 steel or
Q420 steel are made.
Described diagonal rib can be made up of steel plate, angle steel or channel-section steel.
Described steel column is attached with girder steel by full welding or end plate and high-strength bolt.
The invention has the beneficial effects as follows：
1）Girder steel inner side is provided with after diagonal rib reinforcement, and under the effect of normal working load, diagonal rib is not involved in work.When steel column failure
Afterwards, in the presence of vertical load above exhaustion column, the diagonal rib in girder steel forms " pressure arching ", increases the initial stage of damaged structure
Rigidity, delays structure vertical deformation.
2）Reinforcing is designed different from changing scantling or increasing the modes such as primary structure member quantity, is reinforced using diagonal rib
Mode design and installation it is simple, reduce cost, it is good in economic efficiency.
3）The design of diagonal rib and reinforcing position be not overlap with node routine stress component, therefore can be not only used for newly-built structure,
The strengthening reconstruction of existing structure is can also be used for, can be not only used for welding bean column node entirely, it can also be used to end plate connection bean column node.
Description of the drawings
Fig. 1 is one of enforcement structure of the present invention.
Fig. 2 is the two of the enforcement structure of the present invention.
Wherein, 1 is steel column；2 are destruction steel column；3 is diagonal rib；4 is ribbed stiffener on post；5 is girder steel；6 is diclinic rib.
Specific embodiment
The present invention is further discussed below below in conjunction with accompanying drawing.
One kind adopts steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that comprise the following steps：
For new building, the position of crucial post is determined by the progressive collapse-resisting method for designing in specification first, select key post
Afterwards, by it is assumed that destruction steel column, welding increase monocline rib or diclinic rib on the both sides joist steel of destruction steel column, strengthen crucial post
Pressure arching at position, improves the redundancy and progressive collapse-resisting ability of new building；
For existed building, after the post by reconnoitring the weak post of observation understanding or to there is breakoff phenomenon, by it is assumed that destruction
Steel column, depending on building member situation and job site situation are arranged, select monocline rib reinforcement or diclinic rib reinforcement, are realized to existing
The progressive collapse-resisting of building is reinforced.
As shown in figure 1, the pressure arching at key post locations is closed in described enhancing, it is characterised in that implement structure by not breaking
Ribbed stiffener 4 and girder steel 5 are constituted on bad steel column 1, destruction steel column 2, diagonal rib 3, post, are not destroyed steel column 1 and are passed through girder steel with destruction steel column 2
5 connections, ribbed stiffener 4 is connected with not destroying steel column 1 and destroying steel column 2 on post, and diagonal rib 3 is connected with girder steel 5, on the inside of diagonal rib 3 and steel
The web connection of beam 5, the two ends of diagonal rib 3 should be connected with lower flange on the corresponding position of girder steel 5, and near girder steel 5 and steel column
Junction, it is to avoid participate in early stage stress.
The inner side of described diagonal rib 3 is connected with the web of girder steel 5 using welding manner, on the tilting section and girder steel 5 of diagonal rib 3
Lower flange contact site is fixed using welding manner.It is welded to connect convenient direct, it is easy to execute-in-place, it is adaptable to existed building
Reinforce.
As shown in Fig. 2 the pressure arching at key post locations is closed in described enhancing, it is characterised in that implement structure by not breaking
Ribbed stiffener 4 and girder steel 5 are constituted on bad steel column 1, destruction steel column 2, diclinic rib 6, post, are not destroyed steel column 1 and are passed through steel with destruction steel column 2
Beam 5 connects, and ribbed stiffener 4 is connected with not destroying steel column 1 and destroying steel column 2 on post, and diclinic rib 6 is connected with girder steel 5, diclinic rib 6
The strong welds such as inner side and the web of girder steel 5, the two ends of diclinic rib 6 respectively with the strong weld such as the upper lower flange of girder steel 5.Diclinic rib adds
Gu arrangement is flexible, it is adaptable to the strengthening reconstruction of existed building.
On described steel column 1, girder steel 5, diagonal rib 3, post ribbed stiffener 4 and diclinic rib 6 using Q235 steel or Q345 steel or
Q390 steel or Q420 steel are made.The bearing capacity deposit of component can be improved using high-strength steel.
Described diagonal rib 3 can be made up of steel plate, angle steel or channel-section steel." pressure arch can be helped using the bigger diagonal rib 3 in cross section
The formation of effect ", improves the early stage rigidity and bearing capacity of damaged structure.
Described steel column 1 is attached with girder steel 5 by full welding or end plate and high-strength bolt.
Claims (7)
1. it is a kind of to adopt steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that to comprise the following steps：
For new building, the position of crucial post is determined by the progressive collapse-resisting method for designing in specification first, select key post
Afterwards, by it is assumed that destruction steel column, welding increase monocline rib or diclinic rib on the both sides joist steel of destruction steel column, strengthen crucial post
Pressure arching at position, improves the redundancy and progressive collapse-resisting ability of new building；
For existed building, after the post by reconnoitring the weak post of observation understanding or to there is breakoff phenomenon, by it is assumed that destruction
Steel column, depending on building member situation and job site situation are arranged, select monocline rib reinforcement or diclinic rib reinforcement, are realized to existing
The progressive collapse-resisting of building is reinforced.
2. it is according to claim 1 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Strengthen and close pressure arching at key post locations, it is characterised in that implement structure by not destroying steel column（1）, destruction steel column（2）, tiltedly
Rib（3）, ribbed stiffener on post（4）And girder steel（5）Composition, does not destroy steel column（1）With destruction steel column（2）By girder steel（5）Connection, post
Upper ribbed stiffener（4）With do not destroy steel column（1）With destruction steel column（2）Connection, diagonal rib（3）With girder steel（5）Connection, diagonal rib（3）Inner side
With girder steel（5）Web connection, diagonal rib（3）Two ends should be with girder steel（5）Corresponding position on lower flange connection, and near steel
Beam（5）With steel column junction, it is to avoid participate in early stage stress.
3. it is according to claim 1 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Diagonal rib（3）Inner side and girder steel（5）Web using welding manner connect, diagonal rib（3）Tilting section and girder steel（5）Upper lower flange
Contact site is fixed using welding manner.
4. it is according to claim 1 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Strengthen and close pressure arching at key post locations, it is characterised in that implement structure by not destroying steel column（1）, destruction steel column（2）, it is double
Diagonal rib（6）, ribbed stiffener on post（4）And girder steel（5）Composition, does not destroy steel column（1）With destruction steel column（2）By girder steel（5）Connection,
Ribbed stiffener on post（4）With do not destroy steel column（1）With destruction steel column（2）Connection, diclinic rib（6）With girder steel（5）Connection, diclinic rib
（6）Inner side and girder steel（5）The strong weld such as web, diclinic rib（6）Two ends respectively with girder steel（5）Upper lower flange etc. it is fierce
Connect.
5. it is according to claim 2 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Steel column（1）, girder steel（5）, diagonal rib（3）, ribbed stiffener on post（4）With diclinic rib（6）Using Q235 steel or Q345 steel or Q390
Steel or Q420 steel are made.
6. it is according to claim 2 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Diagonal rib（3）Can be made up of steel plate, angle steel or channel-section steel.
7. it is according to claim 2 a kind of using steel frame construction progressive collapse-resisting reinforcement means, it is characterised in that described
Steel column（1）With girder steel（5）It is attached by full welding or end plate and high-strength bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126719.5A CN106593006B (en) | 2016-12-09 | 2016-12-09 | It is a kind of to use steel frame construction progressive collapse-resisting reinforcement means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611126719.5A CN106593006B (en) | 2016-12-09 | 2016-12-09 | It is a kind of to use steel frame construction progressive collapse-resisting reinforcement means |
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|---|---|
| CN106593006A true CN106593006A (en) | 2017-04-26 |
| CN106593006B CN106593006B (en) | 2019-10-18 |
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| CN201611126719.5A Active CN106593006B (en) | 2016-12-09 | 2016-12-09 | It is a kind of to use steel frame construction progressive collapse-resisting reinforcement means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894424A (en) * | 2018-06-26 | 2018-11-27 | 周焱春 | A kind of manufacturing method of house floor |
| CN108979196A (en) * | 2018-08-27 | 2018-12-11 | 西安建筑科技大学 | Utilize the ruggedized construction with fill plate prevention steel-frame structure continuous collapse in R-joining |
| CN109629844A (en) * | 2019-01-09 | 2019-04-16 | 西安建筑科技大学 | A kind of ruggedized construction system using interior fill plate prevention steel-frame structure continuous collapse |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158484B (en) * | 1984-05-09 | 1987-04-01 | Pynford Ltd | Stool |
| CN201581507U (en) * | 2009-12-30 | 2010-09-15 | 北京工业大学 | Steel structure beam-column reinforcement joint for resisting progressive collapse |
| CN203569695U (en) * | 2013-09-30 | 2014-04-30 | 中国建筑东北设计研究院有限公司 | Beam-column joint reinforced by bent-up steel plate and angle steel wrapping column |
| CN105256892A (en) * | 2015-10-19 | 2016-01-20 | 河北工业大学 | Framework beam column capable of enhancing anti-shearing bearing force and manufacturing method of framework beam column |
-
2016
- 2016-12-09 CN CN201611126719.5A patent/CN106593006B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158484B (en) * | 1984-05-09 | 1987-04-01 | Pynford Ltd | Stool |
| CN201581507U (en) * | 2009-12-30 | 2010-09-15 | 北京工业大学 | Steel structure beam-column reinforcement joint for resisting progressive collapse |
| CN203569695U (en) * | 2013-09-30 | 2014-04-30 | 中国建筑东北设计研究院有限公司 | Beam-column joint reinforced by bent-up steel plate and angle steel wrapping column |
| CN105256892A (en) * | 2015-10-19 | 2016-01-20 | 河北工业大学 | Framework beam column capable of enhancing anti-shearing bearing force and manufacturing method of framework beam column |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894424A (en) * | 2018-06-26 | 2018-11-27 | 周焱春 | A kind of manufacturing method of house floor |
| CN108894424B (en) * | 2018-06-26 | 2019-11-26 | 福建永东南建设集团有限公司 | A kind of manufacturing method of house floor |
| CN108979196A (en) * | 2018-08-27 | 2018-12-11 | 西安建筑科技大学 | Utilize the ruggedized construction with fill plate prevention steel-frame structure continuous collapse in R-joining |
| CN109629844A (en) * | 2019-01-09 | 2019-04-16 | 西安建筑科技大学 | A kind of ruggedized construction system using interior fill plate prevention steel-frame structure continuous collapse |
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| Publication number | Publication date |
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| CN106593006B (en) | 2019-10-18 |
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