CN102242540A - Large-span steel-structure box beam and collision-prevention wall integrated construction technology - Google Patents
Large-span steel-structure box beam and collision-prevention wall integrated construction technology Download PDFInfo
- Publication number
- CN102242540A CN102242540A CN2011100401785A CN201110040178A CN102242540A CN 102242540 A CN102242540 A CN 102242540A CN 2011100401785 A CN2011100401785 A CN 2011100401785A CN 201110040178 A CN201110040178 A CN 201110040178A CN 102242540 A CN102242540 A CN 102242540A
- Authority
- CN
- China
- Prior art keywords
- crashproof wall
- construction
- collision
- box beam
- prevention wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a large-span steel-structure box beam and collision-prevention wall integrated construction technology, belonging to the technical field of municipal bridge and road engineering construction technologies. Spare parts are generally fed and are assembled on site for the construction of a steel-structure bridge collision-preventing wall all the time. Subsequently, the disadvantages of large field construction area, large workload and more butting joints are caused, so that neither inner quality nor appearance quality can be ensured. Aiming at the disadvantages, a great improvement is made on the construction process of the collision-prevention wall of Beizhai road bridge, the collision-prevention wall is pre-assembled with a steel box beam in a factory, the collision-prevention wall and the steel box beam are integrally hoisted on site, and in such a way, the disadvantages are eliminated.
Description
Technical field
Municipal administration bridge and highway construction steel-structure box girder and crashproof wall integrated construction technology.
Background technology
Along with China's constant development of economy, elevated bridge and road are in the high speed development stage, and on the construction quality of engineering, people not only pay attention to the inherent quality of engineering construction, and pay attention to presentation quality more, therefore also just the engineering construction presentation quality is had higher requirement.Crashproof wall is as a kind of safety prevention measure of highway bridge, to buffering vehicular impact power, guarantees traffic safety, protection the people's lives and property and the equal tool important function in aspect such as attractive in appearance that becomes the bridge line style.On the grade separation bridge project construction of northern Zhai Lu Middle Ring Line, because this project construction cycle is short, big (about 10663 tons of steel work weight) the job site heavy traffic of engineering quantity, visitors flowrate is big, linear complexity of steel bridge and large span (three cross a rivers, secondary is crossed over Middle Ring Line, 98 meters of maximum spans), the quality requirement height, therefore the improved requirement of crashproof wall construction technology is to guarantee inherent quality and presentation quality; Satisfy the construction speed requirement; Reduce field erected workload.We pass through technician's research and technological demonstration at above difficulty, proposed the notion of box beam and crashproof wall integrated construction, and adopted this technology in northern Zhai's road and bridge construction.The steel structure bridge section is seen Fig. 1.
Summary of the invention
Steel structure bridge is because span is big, its vertical camber value is also bigger, but also the form of structure of oriented direction of traffic bending, particularly component volume is huge, also to consider the problem of transportation, therefore the construction to its crashproof wall has brought very big difficulty, and horizontal horizontal wall inscription should be arranged, and more will guarantee camber and radian longitudinally; Being space three-dimensional structure, is that difficulty is very big.The construction of the crashproof wall of steel structure bridge always generally all is to adopt loose mail blanking, assembled on site (perhaps be processed into 2～3 meters of standard paragraphs length, arrive assembled on site then).Shi Gong defective is that on-the-spot working face is big like this; Workload is big; Banjo fixing butt jointing is many; Because on-the-spot limitation of construction, inherent quality and presentation quality all are difficult to guarantee; Particularly construct above the intensive road of people's car, the potential safety hazard of work high above the ground is very big.At above disadvantage, we have done bold improvement on the crashproof wall construction technology of northern Zhai Lu engineering, originally changed the whole processing and fabricating of factory into and by the whole pre-assembly unit of design elevation at the loose mails of site construction a large amount of, received fabulous effect, thoroughly solved above disadvantage, promote the quality of engineering, accelerated construction speed, guaranteed safe construction.
Can be during in order to ensure factory process smoothly with crashproof wall and main bridge integral assembly welding, thus guarantee construction quality and progress, therefore need from control following some satisfy.
1) the segmentation control of dispatching from the factory of steel structure bridge
Behind crashproof wall and the main bridge integral assembly welding, must have rodability,, reduce number of fragments as much as possible, reduce field erected butt joint amount, determine that therefore rational segmentation position and size are very crucial with this satisfying under the transportable prerequisite.Design drawing according to steel case beam requires in conjunction with the job site actual conditions, our segmented mode below laterally having adopted, segmentation at direction of traffic, consider the rigidity of two flanks in the transversal sectional mode, we generally control length dimension about 15 meters, in order to avoid member is long, in handling and transportation, cause distortion.
We have also done corresponding computational analysis from two aspects to this:
1. the deflection deformation analysis when lifting: computation model is pressed simply supported beam and is considered that simply supported beam mid-span deflection design formulas is f=5 π l
4/ 384EI has according to the factor of formula show image deflection deformation: span, material, cross section (I).Under the constant situation of span and material, section form is " one " shape, and section form is " L " shape when installing crashproof wall.The second moment of area I=bh of " one " tee section form
3/ 12 (see figure 2)s.Moment of inertia I=1/3 (the By of " L " tee section form
2 3-bs
3+ cy
1 3) (see figure 3).At b=B, the second moment of area I of " L " tee section form is greater than the second moment of area I of " one " tee section form under the situation of h=d=C, so the deflection deformation of obtaining a result when " wing " lifts when installing crashproof wall is little.Rectification workload behind the installation in position is much smaller like this, and is more favourable to the quickening progress.
2. the stiffness analysis of member self: rigidity formula K=p/ δ p is the load that applies, the δ deflection.Having reached a conclusion when " wing " when in front deflection deformation is analyzed is favourable to controlled deformation when installing crashproof wall, when distortion obtains corresponding control, can see that by the rigidity formula drawing member self rigidity will be improved.Because member self rigidity is improved, its deflection when transportation and on-the-spot the stacking will be controlled greatly.Deformation control during to the lifting in later stage and assembling is equally quite favourable.
2) control of crashproof wall camber and direction of traffic bending and absolute altitude drop
Guarantee crashproof wall camber and direction of traffic bending and absolute altitude drop, also to guarantee the vertical requirement greatly of crashproof wall, the most reasonable approach is according to design value, set up and meet the camber value, bending value, the assembling moulding bed of absolute altitude drop value, only the crashproof wall of assembling on this assembling moulding bed could satisfy every requirement.We are in practice of construction, set up the assembling moulding bed by the span between the two axial lines, make every numerical value of main deck all meet design load, then main deck and moulding bed are adopted special anchor clamps fix tightly, reduce the deformation values that crashproof wall produces when assembly welding, begin to assemble crashproof wall at last, the span between the two axial lines is welded as an overall package, carry out segmentation according to length dimension again after to be formed, the interface deviation when guaranteeing on-the-spot the installation with this by about 15 meters.
Description of drawings
Fig. 1 is the steel structure bridge profile.
Fig. 2 is the second moment of area I=bh of " one " tee section form
3/ 12.
Fig. 3 is the moment of inertia I=1/3 (By of " L " tee section form
2 3-bs
3+ cy
1 3).
Fig. 4 is crashproof wall assembling and welding sequence control chart.
The specific embodiment
Crashproof wall assembling and welding sequence control are as follows: (see figure 4)
1) dividing plate and main deck assembling, utilize plumb bob to guarantee divider upright the earth → 2) mounting bedplate → 3) inboard riser → 4 down of assembling) assemble inboard swash plate → 5) welding diaphragm, base plate, riser, swash plate, relevant weld seam between the main deck, polishing cleaning → 6) assembling outer cant board → 7) outer cant board of welding and dividing plate, weld seam between the base plate, the inner paint → 8 in polishing cleaning back) penetrate conduit → 9) assemble inboard upper vertical plate → 10) weld seam between welding riser and the dividing plate, the inner paint → 11 in polishing cleaning back) penetrate conduit → 12) the assembling top board, adopt plug welding between top board and the dividing plate.
According to above sequence of fitting and welding, both convenient construction can guarantee the linear drawing requirement that meets again; Both saved artificial, quality that again can the crashproof portion within the walls of fine assurance.
Claims (3)
1. in the construction technology of the crashproof wall of steel structure bridge, it is characterized in that: the notion of proposition box beam and crashproof wall integrated construction changes a large amount of original loose mails at site construction the whole processing and fabricating of factory into and delivers to the building site after the assembly unit in advance by design elevation is whole.
2. crashproof wall construction technology according to claim 1, it is characterized in that: in the segmentation of direction of traffic, consider the rigidity of two flanks in the transversal sectional mode, the control length dimension is about 15 meters, in order to avoid member is long, in handling and transportation, cause distortion.
3. crashproof wall construction technology according to claim 1, it is characterized in that: set up the assembling moulding bed by the span between the two axial lines, make every numerical value of main deck all meet design load, then main deck and moulding bed are adopted special anchor clamps fix tightly, reduce the deformation values that crashproof wall produces when assembly welding, begin to assemble crashproof wall at last, guarantee crashproof wall camber and direction of traffic bending and absolute altitude drop and the vertical requirement greatly of the crashproof wall of assurance with this.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100401785A CN102242540A (en) | 2011-02-18 | 2011-02-18 | Large-span steel-structure box beam and collision-prevention wall integrated construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100401785A CN102242540A (en) | 2011-02-18 | 2011-02-18 | Large-span steel-structure box beam and collision-prevention wall integrated construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102242540A true CN102242540A (en) | 2011-11-16 |
Family
ID=44960767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100401785A Pending CN102242540A (en) | 2011-02-18 | 2011-02-18 | Large-span steel-structure box beam and collision-prevention wall integrated construction technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102242540A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680384A (en) * | 2014-11-16 | 2016-06-15 | 任丘市永基建筑安装工程有限公司 | Steel bridge lighting wiring method |
| CN107245949A (en) * | 2017-05-17 | 2017-10-13 | 沈阳市政集团有限公司 | Anti-collision wall application construction method in Urban Bridge in assembled |
| CN107687130A (en) * | 2017-09-27 | 2018-02-13 | 中铁第四勘察设计院集团有限公司 | Across the bridge steel anticollision wall construction of high-speed railway on a kind of highway |
| CN109137711A (en) * | 2017-06-28 | 2019-01-04 | 中国二十冶集团有限公司 | A kind of bridge ultra-wide steel box-girder component and its joining method waterborne |
| CN110306436A (en) * | 2019-06-11 | 2019-10-08 | 中国建筑第六工程局有限公司 | A kind of super large segmentation across pier erection construction method of two ship through transport of steel structure bridge |
| CN110306435A (en) * | 2019-06-11 | 2019-10-08 | 中国建筑第六工程局有限公司 | A kind of super large segmentation more ship through transport construction methods of steel structure bridge |
| CN113005904A (en) * | 2021-02-09 | 2021-06-22 | 浙江交工集团股份有限公司 | Synchronous integral hoisting construction process for precast beam top anti-collision wall |
-
2011
- 2011-02-18 CN CN2011100401785A patent/CN102242540A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 朱志强: "大跨度钢结构箱梁和防撞墙整体施工技术", 《中国市政工程》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680384A (en) * | 2014-11-16 | 2016-06-15 | 任丘市永基建筑安装工程有限公司 | Steel bridge lighting wiring method |
| CN107245949A (en) * | 2017-05-17 | 2017-10-13 | 沈阳市政集团有限公司 | Anti-collision wall application construction method in Urban Bridge in assembled |
| CN109137711A (en) * | 2017-06-28 | 2019-01-04 | 中国二十冶集团有限公司 | A kind of bridge ultra-wide steel box-girder component and its joining method waterborne |
| CN107687130A (en) * | 2017-09-27 | 2018-02-13 | 中铁第四勘察设计院集团有限公司 | Across the bridge steel anticollision wall construction of high-speed railway on a kind of highway |
| CN110306436A (en) * | 2019-06-11 | 2019-10-08 | 中国建筑第六工程局有限公司 | A kind of super large segmentation across pier erection construction method of two ship through transport of steel structure bridge |
| CN110306435A (en) * | 2019-06-11 | 2019-10-08 | 中国建筑第六工程局有限公司 | A kind of super large segmentation more ship through transport construction methods of steel structure bridge |
| CN110306435B (en) * | 2019-06-11 | 2020-11-10 | 中国建筑第六工程局有限公司 | Multi-ship combined transportation construction method for super-large segmented steel structure bridge |
| CN110306436B (en) * | 2019-06-11 | 2020-11-13 | 中国建筑第六工程局有限公司 | Two-ship combined transportation cross-pier erection construction method for super-large segmented steel structure bridge |
| CN113005904A (en) * | 2021-02-09 | 2021-06-22 | 浙江交工集团股份有限公司 | Synchronous integral hoisting construction process for precast beam top anti-collision wall |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102242540A (en) | Large-span steel-structure box beam and collision-prevention wall integrated construction technology | |
| CN103806660B (en) | Structural Steel Reinforced Concrete beam-column joint construction method | |
| CN102979319B (en) | A kind of method of stiffening frame node | |
| CN102691266B (en) | Construction method for ultrahigh combined support for bridge side span cast-in-situ section | |
| CN202626846U (en) | Ultrahigh combined support for bridge side span cast-in-situ section | |
| CN102011369B (en) | Construction method of steel shells of bridge closure segments striding over various roads | |
| CN115162182B (en) | Cantilever type steel box girder high-precision cable hoisting construction method | |
| CN101759079A (en) | Method for integrally assembling and installing steel structure elevator derrick on the ground | |
| CN102080417A (en) | Construction method for split burying of large T-shaped sleeve bolt | |
| CN103437546A (en) | Aluminum alloy template with composite structure | |
| CN206503233U (en) | Assembled architecture beam-to-column joint structure and steel building | |
| CN206308988U (en) | Tool-type combination construction pylon | |
| CN108086478A (en) | Quadrate steel pipe column and I-beam flat push type dovetail assembling frame Joint design method | |
| CN204126297U (en) | A kind of temporary support of steel truss roof | |
| CN104196150B (en) | A kind of steel plate shear force wall and making method thereof | |
| CN107881914B (en) | Wire-dividing tube type cable saddle back field assembly type positioning device and assembly method | |
| CN106223209A (en) | The buried anchor box of a kind of post-tensioned method prestressed concrete box beam construction and construction method | |
| CN110206167A (en) | A kind of assembly concrete building element tenon riveting formula design and construction method | |
| CN202577158U (en) | Hyperbolic cable tower cross beam adjusting bracket | |
| CN101875163A (en) | Assembling and welding jig frame used for bracket of bridge fabrication machine and method for fabricating bracket by using same | |
| CN215107737U (en) | Prefabricated assembled concrete stand structure of inspection hole in lightweight storehouse | |
| CN202099879U (en) | Box type steel pedestal supporting base with shear key | |
| CN214939178U (en) | Connection structure of assembled steel temporary bridge | |
| CN104318860A (en) | Modularization fast mounted finished product door head and installation technology thereof | |
| CN201744814U (en) | Assembly welding tire frame for brackets of bridge fabrication machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111116 |