CN102121317A - Unloading reinforcing structure for steel frame beam - Google Patents
Unloading reinforcing structure for steel frame beam Download PDFInfo
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- CN102121317A CN102121317A CN2010103001953A CN201010300195A CN102121317A CN 102121317 A CN102121317 A CN 102121317A CN 2010103001953 A CN2010103001953 A CN 2010103001953A CN 201010300195 A CN201010300195 A CN 201010300195A CN 102121317 A CN102121317 A CN 102121317A
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Abstract
The invention relates to a reinforcing method for a steel frame beam. A reinforcing structure comprises a steel frame column (1) and a steel frame beam (2). In the method, bending moment and tension in the steel frame beam are reduced by an unloading structure (3) to meet the requirement on the margin of in-situ reinforced bearing capacity, so that the steel frame beam (2) can be reinforced in situ; the unloading structure (3) consists of an unloading force transferring rod (4), an unloading support (5) and an unloading weight (6); the position where the force transferring rod (4) contacts the steel frame beam is the midspan of the steel frame beam; the unloading support (5) is positioned in the middle of the force transferring rod (4); the material of the unloading support (5) can be selected according to actual conditions on site; the unloading support (5) can be made of steel materials or train crossties; the unloading force transferring rod (4) can be made of joist steel or channel steel with a large cross section; and the weight of the unloading weight (6) can be calculated according to the lever principle, and the unloading weight (6) can be made of a steel ingot. When the method is used, production halt or the influence on structure use due to the disassembly of structural members is prevented, so the loss can be reduced to the minimum; and the method has a simple principle and low required cost and is convenient to operate, and an unloading mechanism can be used repeatedly, so the efficiency is obvious.
Description
Technical field
The invention belongs to technical field of buildings, particularly a kind of structure of steel-frame beam.
Background technology:
Steel-frame beam is a kind of important primary structure member in the steel building, it is mainly used in bears vertical load, and it is passed to frame column, therefore its stress morphology mainly shows as and is bent, be subjected to pressure, can its bearing capacity satisfy instructions for use, the safety of total system will directly be had influence on, sometimes because design, artificial deviation appears in the construction, or the load that design is finished in the actual use in back significantly improves, broken through the degree of safety of design, or comparatively serious damage in use appears, and when finding these problems, girder steel has often been constructed and has been finished, and just must to girder steel carry out reinforcing and handle for guaranteeing girder steel safety in use this moment.Traditional method, a kind of is that this steel-frame beam is reinforced and then reinstalled after structure is removed, this certainly will have influence on the secondary beam and the floor that are attached thereto and also will remove together.The installation that again it resetted after reinforcement and strengthening is finished must have influence on normal use or cause stopping production, will cause bigger economic loss; Carry out consolidation process by enlarging section under the situation about can certainly not remove in position, but if will under load condition, reinforce, original structure and node are connected in the strengthening construction process, for the safety that guarantees structure just requires the original structure bearing of component bigger surplus capacity (requiring to have 20% surplus capacity usually) is arranged, this requirement often all is beyond one's reach, and particularly just more seems very difficult for the member after the structural failure.
Summary of the invention:
The technical problem to be solved in the present invention is:
To the reinforcing of steel-frame beam, must after structure is removed, reinforce, and then reinstall in the prior art.This certainly will have influence on related with it floor and secondary beam, must have influence on normal use or cause stopping production, will cause bigger economic loss.The invention provides a kind of ruggedized construction of steel-frame beam, solved the problems referred to above.
The present invention is achieved in that
The present invention takes following technical scheme:
Comprise Steel Frame Column, steel-frame beam, dowel bar places on the off-load bearing, and one adds the loading and unloading counterweight, and the other end peaks at the steel-frame beam bottom.
Dowel bar and steel-frame beam contact position are the span centre of steel-frame beam.
The position of off-load bearing is in the dowel bar center.
The material selection steel material of off-load bearing or train sleeper.
The off-load dowel bar adopts bigger i iron or the channel-section steel in cross section.
The off-load counterweight adopts steel ingot.
The enforcement of unloading mechanism is exactly to adopt lever principle, adding the off-load counterweight by the end at dowel bar makes an other end of dowel bar produce opposite force upwards, this opposite force acts on again at the bottom of the beam of steel-frame beam, thereby make it produce a concentrated force that makes progress, like this, the moment of flexure of steel-frame beam and pulling force all will reduce, thereby play the purpose of giving its off-load.
When adopting the present invention that steel-frame beam is carried out reinforcement and strengthening, can carry out with step as follows:
Dowel bar is placed on the off-load bearing, generally can put middle setting, material can use steel material or train sleeper, the position is set certain its and material also can be according to on-the-spot physical condition flexible, dowel bar generally can adopt bigger i iron in cross section or channel-section steel, so that have bigger rigidity, be unlikely to take place bigger distortion when guaranteeing power transmission, dowel bar and steel-frame beam contact position generally can place the span centre of steel-frame beam, to guarantee to reduce to greatest extent its internal force, after determining, above-mentioned dowel bar length and support position can calculate the weight that to add at dowel bar one end simply, be the weight of off-load counterweight, off-load can be adopted the bigger material of steel ingot isodensity with counterweight;
End at the off-load dowel bar adds the loading and unloading counterweight, so that produce power upwards at its other end, this power will act on the steel-frame beam bottom, behind the load-bearing, moment of flexure and pulling force in the steel-frame beam will reduce, reach the bearing capacity surplus capacity requirement of original position reinforcing, can carry out the constructing operation of reinforcing this moment in position to steel-frame beam;
After reinforcing is finished dealing with, remove this unloading mechanism, this moment, the stressing conditions of steel-frame beam returned to the preceding original state of off-load again, but because reinforcing is finished, and this moment, its bearing capacity met the demands, steel-frame beam has reached the state of trouble free service again.
The present invention compared with prior art has following advantage:
The imposed load that produces by unloading mechanism can produce an opposition to the steel-frame beam bottom that must reinforce, this power can make the moment of flexure of steel-frame beam and pulling force significantly reduce, thereby reach the loading condition requirement of original position reinforcement, so just can under situation about will not remove, carry out reinforcement and strengthening.Avoided the stopping production that causes because of the dismounting structure member or influenced the situation appearance that structure is used after adopting the inventive method, thereby loss is reduced to minimum, and its principle is simple, be convenient to operation, the expense that needs also seldom, unloading mechanism can also be reused, its effect is very remarkable.
Description of drawings:
Fig. 1 is a steel-frame beam and the schematic diagram that connects of Steel Frame Column.
Fig. 2 is a simplified schematic diagram of the present invention.
Fig. 3 is the schematic diagram of unloading mechanism.
The specific embodiment of the present invention:
Embodiment one:
Steel-frame beam 2 is a kind of important primary structure members in the steel building, and it is mainly used in bears vertical load, and it is passed to frame column 1, so its stress morphology mainly shows as and bent, is subjected to pressure.Now, need reinforce to it owing to its overburden.
Make unloading mechanism 3, be about to dowel bar 4 and place between two parties on the off-load bearing 5, material uses steel material, and dowel bar adopts the bigger i iron in cross section, so that have bigger rigidity, is unlikely to take place bigger distortion when guaranteeing power transmission.Dowel bar and steel-frame beam 2 contact positions place the span centre of steel-frame beam, to guarantee to reduce to greatest extent its internal force, after determining, above-mentioned dowel bar length and support position can calculate the weight that to add at dowel bar one end simply, be the weight of off-load counterweight 6, off-load is adopted steel ingot with counterweight;
End at the off-load dowel bar adds loading and unloading counterweight 6, so that produce power upwards at its other end, this power will act on the steel-frame beam bottom, behind the load-bearing, moment of flexure and pulling force in the steel-frame beam will reduce, reach the bearing capacity surplus capacity requirement of original position reinforcing, can carry out the constructing operation of reinforcing this moment in position to steel-frame beam.
After reinforcing is finished dealing with, remove this unloading mechanism, this moment, the stressing conditions of steel-frame beam returned to the preceding original state of off-load again, but because reinforcing is finished, and this moment, its bearing capacity met the demands, steel-frame beam has reached the state of trouble free service again.
Claims (6)
1. the off-load ruggedized construction of a steel-frame beam comprises Steel Frame Column (1), steel-frame beam (2), it is characterized in that: dowel bar (4) places on the off-load bearing (5), and one adds loading and unloading counterweight (6), and the other end peaks at steel-frame beam (2) bottom.
2. the off-load ruggedized construction of steel-frame beam according to claim 1 is characterized in that: dowel bar (4) is the span centre of steel-frame beam with the steel-frame beam contact position.
3. the off-load ruggedized construction of steel-frame beam according to claim 1, it is characterized in that: the position of off-load bearing (5) is in dowel bar (4) center.
4. the off-load ruggedized construction of steel-frame beam according to claim 4 is characterized in that: the material selection steel material of off-load bearing (5) or train sleeper.
5. the off-load ruggedized construction of steel-frame beam according to claim 1 is characterized in that: bigger i iron or the channel-section steel in off-load dowel bar (4) employing cross section.
6. according to the off-load ruggedized construction of the described steel-frame beam of claim 1, it is characterized in that: off-load counterweight (6) adopts steel ingot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103001953A CN102121317A (en) | 2010-01-11 | 2010-01-11 | Unloading reinforcing structure for steel frame beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103001953A CN102121317A (en) | 2010-01-11 | 2010-01-11 | Unloading reinforcing structure for steel frame beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121317A true CN102121317A (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010103001953A Pending CN102121317A (en) | 2010-01-11 | 2010-01-11 | Unloading reinforcing structure for steel frame beam |
Country Status (1)
| Country | Link |
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| CN (1) | CN102121317A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859356A (en) * | 2017-11-30 | 2018-03-30 | 河南省电力勘测设计院 | A kind of cold reinforcement by connection method of simple bending H profile steel beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620156A1 (en) * | 1976-05-07 | 1977-11-24 | Karl Dipl Ing Funk | Vegetable plant powered unit for power generation - utilises plant structure for rotating by alternating drying and wetting |
| CN2103130U (en) * | 1991-11-08 | 1992-04-29 | 中国石油化工总公司一坪化工厂 | Platform scale weight lifting device |
| CN2786591Y (en) * | 2005-01-28 | 2006-06-07 | 祁以元 | Seesaw vibration platform |
| CN1997583A (en) * | 2004-07-21 | 2007-07-11 | I·达兰特 | Door and board lifting device |
-
2010
- 2010-01-11 CN CN2010103001953A patent/CN102121317A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2620156A1 (en) * | 1976-05-07 | 1977-11-24 | Karl Dipl Ing Funk | Vegetable plant powered unit for power generation - utilises plant structure for rotating by alternating drying and wetting |
| CN2103130U (en) * | 1991-11-08 | 1992-04-29 | 中国石油化工总公司一坪化工厂 | Platform scale weight lifting device |
| CN1997583A (en) * | 2004-07-21 | 2007-07-11 | I·达兰特 | Door and board lifting device |
| CN2786591Y (en) * | 2005-01-28 | 2006-06-07 | 祁以元 | Seesaw vibration platform |
Non-Patent Citations (3)
| Title |
|---|
| 刘卫利 等: "厂房改造中的"托梁抽柱"技术", 《工程建设与设计》 * |
| 崔庆源: "用杠杆法顶升简支梁（板）桥", 《公路交通科技》 * |
| 潘健 等: "基于杠杆原理的吊篮式更换桥梁支座新方法", 《湖南交通科技》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859356A (en) * | 2017-11-30 | 2018-03-30 | 河南省电力勘测设计院 | A kind of cold reinforcement by connection method of simple bending H profile steel beam |
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Application publication date: 20110713 |