CN205347957U - Steel case purlin combination continuous bridge - Google Patents
Steel case purlin combination continuous bridge Download PDFInfo
- Publication number
- CN205347957U CN205347957U CN201521131392.1U CN201521131392U CN205347957U CN 205347957 U CN205347957 U CN 205347957U CN 201521131392 U CN201521131392 U CN 201521131392U CN 205347957 U CN205347957 U CN 205347957U
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- pier
- steel
- girder
- bridge
- stiffened portion
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Abstract
The utility model discloses a steel case purlin combination continuous bridge, steel case purlin combination continuous bridge including the side block, the 2nd side block who is equipped with the 2nd side block basis that are equipped with side block basis, be equipped with mound in first mound basis first, be equipped with the second in the second on mound basis mound and bridge deck, the utility model discloses with steel case - ingenious putting together of steel purlin structure, the full -bridge adopts the subregion section to adopt individual layer or double -layer steel purlin to put more energy into and puts more energy into to the girder, can reduce the full -bridge structure height, improves steel case roof beam the stress performance. End bay and main span adoption steel longeron are put more energy into, and the girder adopts steel case roof beam, can satisfy under the atress requirement condition, and girder wholeness ability is improved to the reinforcing main span ability of strideing across, increases structural stiffness, reduces the noise, saves engineering cost. Bridge type elegant appearance, the function is complete, has good technical economy.
Description
Technical field
This utility model relates to bridge technology field, is specially a kind of steel case purlin composite continuous bridge.
Background technology
In existing bridge structure, continuous truss bridge has stronger span ability, and for making structure accept rationally, general span is more big, and structure height is more high.But, when the work point that bridge structure height is restricted, existing general continuous truss bridge is just difficult to meet require that.
Utility model content
For solving above-mentioned technical problem, utility model one reduces full bridge structure height, improves the steel case purlin composite continuous bridge of steel box-girder holistic resistant behavior, and it is achieved through the following technical solutions:
A kind of steel case purlin composite continuous bridge, including the first abutment pier 1 being provided with the first abutment pier basis 2, it is provided with second abutment pier 9 on the second abutment pier basis 10, pier 3 in be provided with in first pier foundation 4 first, pier 11 and bridge deck in be provided with in second pier foundation 12 second, described first abutment pier 1 and the second abutment pier 9 lay respectively at pontic two ends, in described first, in pier 3 and second, pier 11 is respectively positioned between the first abutment pier 1 and the second abutment pier 9, described bridge deck is steel box-girder 5, described steel box-girder 5 and the first abutment pier 1 and first are provided with first lower floor's steel truss stiffened portion 7 between pier 3, described steel box-girder 5 and the second abutment pier 9 and second are provided with second lower floor's steel truss stiffened portion 8 between pier 11, the upper surface of described steel box-girder 5 is provided with upper strata steel truss stiffened portion 6, described upper strata steel truss stiffened portion 6 is in first in pier 3 and second between pier 11, and two ends are respectively facing the bridge deck direction, outside of each middle pier and extend.
Further, described first lower floor's steel truss stiffened portion 7 and second lower floor's steel truss stiffened portion 8 are respectively arranged at the lower surface at steel box-girder 5 two ends.
Further, described upper strata steel truss stiffened portion the 6, first lower floor steel truss stiffened portion 7 and second lower floor's steel truss stiffened portion 8 are steel truss girder, and the upper surface of described upper strata steel truss stiffened portion 6 is circular arc.
Further, one end of described first lower floor's steel truss stiffened portion 7 is provided with first time truss cut-off section 71, and in described lower truss cut-off section 71 using first, pier 3 extends as starting point to pier 11 direction in second；One end of described second lower floor's steel truss stiffened portion 8 is provided with second time truss cut-off section 81, and in described second time truss cut-off section 81 using second, pier 11 extends as starting point to pier 3 direction in first.
Steel case-steel truss structure is combined by this utility model cleverly, and full-bridge adopts sectional to adopt monolayer or double-deck steel truss to put more energy into and girder is put more energy into, it is possible to decrease full bridge structure height, improves steel box-girder holistic resistant behavior.End bay and main span adopt steel truss girder to put more energy into, and girder adopts steel box-girder, under meeting force request situation, can strengthen main span span ability, improve girder overall performance, increase the rigidity of structure, reduce noise, save construction costs.Bridge type is elegant in appearance, complete function, has good Technical Economy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 illustrates across steel box-girder cross section in this utility model.
Fig. 3 is pier fulcrum box section signal in this utility model.
Fig. 4 is the selected structural representation of the panel length of this bridge type.
Fig. 5 is this bridge dead load moment of flexure schematic diagram.
Detailed description of the invention
This utility model is further illustrated below in conjunction with drawings and Examples.
A kind of steel case purlin composite continuous bridge, including the first abutment pier 1 being provided with the first abutment pier basis 2, it is provided with second abutment pier 9 on the second abutment pier basis 10, pier 3 in be provided with in first pier foundation 4 first, pier 11 and bridge deck in be provided with in second pier foundation 12 second, described first abutment pier 1 and the second abutment pier 9 lay respectively at pontic two ends, in described first, in pier 3 and second, pier 11 is respectively positioned between the first abutment pier 1 and the second abutment pier 9, described bridge deck is steel box-girder 5, described steel box-girder 5 and the first abutment pier 1 and first are provided with first lower floor's steel truss stiffened portion 7 between pier 3, described steel box-girder 5 and the second abutment pier 9 and second are provided with second lower floor's steel truss stiffened portion 8 between pier 11, the upper surface of described steel box-girder 5 is provided with upper strata steel truss stiffened portion 6, described upper strata steel truss stiffened portion 6 is in first in pier 3 and second between pier 11, and two ends are respectively facing the bridge deck direction, outside of each middle pier and extend.Described first lower floor's steel truss stiffened portion 7 and second lower floor's steel truss stiffened portion 8 are respectively arranged at the lower surface at steel box-girder 5 two ends.Described upper strata steel truss stiffened portion the 6, first lower floor steel truss stiffened portion 7 and second lower floor's steel truss stiffened portion 8 are steel truss girder, and the upper surface of described upper strata steel truss stiffened portion 6 is circular arc.One end of described first lower floor's steel truss stiffened portion 7 is provided with first time truss cut-off section 71, and in described lower truss cut-off section 71 using first, pier 3 extends as starting point to pier 11 direction in second；One end of described second lower floor's steel truss stiffened portion 8 is provided with second time truss cut-off section 81, and in described second time truss cut-off section 81 using second, pier 11 extends as starting point to pier 3 direction in first.
The construction method of described steel case purlin composite continuous bridge comprises the following steps:
Step 1, pier foundation 12 in pier foundation 4 and second in the 2, second abutment pier basis, the first abutment pier basis 10, first of constructing；
Step 2, temporary steel buttress of constructing, pier 11 in pier 3 and second in first abutment pier the 1, second abutment pier 9, first of then constructing；
Step 3, the first lower floor's steel truss stiffened portion 7 and second lower floor's steel truss stiffened portion 8 of constructing, adopt Bridge Erector burst lifting end bay end steel truss, the splicing carrying out steel truss after having lifted assembles, and lifts steel truss by cross, and assembles；
Step 4, slings whole for steel box-girder 5 hole with lifting means, removes temporary steel buttress, assembled upper strata steel truss stiffened portion 6, carries out deck paving Cheng Qiao.
Described step 3 uses crane Bridge Erector is installed, carry out the erection of truss of top with Bridge Erector, and continue to direction, middle of the river cantilever erection.Before described step 4, first with boats and ships, the steel box-girder 5 of span centre is transported to design attitude place.Calculate first time truss cut-off section 71 and the length of second time truss cut-off section 81 before first lower floor's steel truss stiffened portion 7 and the second lower floor's steel truss stiffened portion 8 of constructing in described step 3, namely determine first time truss cut-off point 711 and second time truss cut-off point 811.Determine that first time truss cut-off point 711 and second time truss cut-off point 811 comprise the following steps: step 31, the panel length according to existing similar span ground continuous steel girder, the panel length of this bridge type selected；Step 32, the continuous beam moment of flexure according to girder, choose the equivalent point of positive and negative moment as theoretic first time truss cut-off point 711 and second time truss cut-off point 811；Step 33, according to the panel length chosen, first time truss cut-off point 711 in theory and second time truss cut-off point 811 is arranged and selected actual cutoff；Step 34, sets up FEM (finite element) model, and said structure is calculated, it is determined that trussmember sectional dimension so that it is stress meets code requirement.Step 35, the lower truss position of fine setting, and adjusting tank beam slab is thick, makes stress under box beam dead load tend to uniform, and positive and negative stress intensity is close to equal.
Steel case-steel truss structure is combined by this utility model cleverly, and full-bridge adopts sectional to adopt monolayer or double-deck steel truss to put more energy into and girder is put more energy into, it is possible to decrease full bridge structure height, improves steel box-girder holistic resistant behavior.End bay and main span adopt steel truss girder to put more energy into, and girder adopts steel box-girder, under meeting force request situation, can strengthen main span span ability, improve girder overall performance, increase the rigidity of structure, reduce noise, save construction costs.Bridge type is elegant in appearance, complete function, has good Technical Economy.
Claims (4)
1. a steel case purlin composite continuous bridge, including the first abutment pier (1) being provided with the first abutment pier basis (2), it is provided with second abutment pier (9) of the second abutment pier basis (10), pier (3) in be provided with in first pier foundation (4) first, pier (11) and bridge deck in be provided with in second pier foundation (12) second, described first abutment pier (1) and the second abutment pier (9) lay respectively at pontic two ends, in described first, in pier (3) and second, pier (11) is respectively positioned between the first abutment pier (1) and the second abutment pier (9), described bridge deck is steel box-girder (5), it is characterized in that: described steel box-girder (5) and be provided with first lower floor's steel truss stiffened portion (7) in the first abutment pier (1) and first between pier (3), described steel box-girder (5) and the second abutment pier (9) and second are provided with between pier (11) second lower floor's steel truss stiffened portion (8), the upper surface of described steel box-girder (5) is provided with upper strata steel truss stiffened portion (6), described upper strata steel truss stiffened portion (6) is arranged in the first pier (3) and second between pier (11), and two ends are respectively facing the bridge deck direction, outside of each middle pier and extend.
2. steel case purlin according to claim 1 composite continuous bridge, it is characterised in that: described first lower floor's steel truss stiffened portion (7) and second lower floor's steel truss stiffened portion (8) are respectively arranged at the lower surface at steel box-girder (5) two ends.
3. steel case purlin according to claim 1 and 2 composite continuous bridge, it is characterized in that: described upper strata steel truss stiffened portion (6), first lower floor's steel truss stiffened portion (7) and second lower floor's steel truss stiffened portion (8) are steel truss girder, and the upper surface of described upper strata steel truss stiffened portion (6) is circular arc.
4. steel case purlin according to claim 1 and 2 composite continuous bridge, it is characterized in that: one end of described first lower floor's steel truss stiffened portion (7) is provided with first time truss cut-off section (71), described lower truss cut-off section (71) extends to pier (11) direction in second using pier (3) in first as starting point；One end of described second lower floor's steel truss stiffened portion (8) is provided with second time truss cut-off section (81), and described second time truss cut-off section (81) extends to pier (3) direction in first using pier (11) in second as starting point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131392.1U CN205347957U (en) | 2015-12-30 | 2015-12-30 | Steel case purlin combination continuous bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521131392.1U CN205347957U (en) | 2015-12-30 | 2015-12-30 | Steel case purlin combination continuous bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205347957U true CN205347957U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521131392.1U Withdrawn - After Issue CN205347957U (en) | 2015-12-30 | 2015-12-30 | Steel case purlin combination continuous bridge |
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| Country | Link |
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| CN (1) | CN205347957U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484147A (en) * | 2015-12-30 | 2016-04-13 | 中铁第四勘察设计院集团有限公司 | Steel box truss combined continuous beam bridge and construction method thereof |
| CN107740338A (en) * | 2017-10-23 | 2018-02-27 | 中国铁路设计集团有限公司 | Curve chord steel truss is put more energy into continuous beam |
| CN110777680A (en) * | 2019-11-13 | 2020-02-11 | 广西恒正建设工程质量检测有限公司 | Method for reinforcing, lifting and transforming beam bridge |
-
2015
- 2015-12-30 CN CN201521131392.1U patent/CN205347957U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484147A (en) * | 2015-12-30 | 2016-04-13 | 中铁第四勘察设计院集团有限公司 | Steel box truss combined continuous beam bridge and construction method thereof |
| CN105484147B (en) * | 2015-12-30 | 2017-06-20 | 中铁第四勘察设计院集团有限公司 | Steel case purlin composite continuous bridge and its construction method |
| CN107740338A (en) * | 2017-10-23 | 2018-02-27 | 中国铁路设计集团有限公司 | Curve chord steel truss is put more energy into continuous beam |
| CN110777680A (en) * | 2019-11-13 | 2020-02-11 | 广西恒正建设工程质量检测有限公司 | Method for reinforcing, lifting and transforming beam bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20170620 |