CN112627048A - Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system - Google Patents
Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system Download PDFInfo
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- CN112627048A CN112627048A CN202110017221.XA CN202110017221A CN112627048A CN 112627048 A CN112627048 A CN 112627048A CN 202110017221 A CN202110017221 A CN 202110017221A CN 112627048 A CN112627048 A CN 112627048A
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- prepressing
- comprehensive
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- pressing
- tied
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Abstract
The invention belongs to the field of bridge construction, and provides a comprehensive prepressing method and a comprehensive prepressing device for a tied arch bridge beam suspension construction beam lattice system, wherein the comprehensive prepressing method mainly comprises the steps of dividing a tied beam into a plurality of comprehensive prepressing blocks along the direction of a bridge, and piling concrete cubic prepressing blocks on the tied beam in each comprehensive prepressing block according to corresponding bearing load equivalence or overload according to standard requirements to form a prepressing block stack; installing a Bailey beam on the pre-pressing block stack, and installing pre-pressing blocks corresponding to the corresponding loads of the cross beam on the Bailey beam; and reversely removing all the pre-pressing blocks. The concrete cubic pre-pressing block is used as a pre-pressing material, so that the working conditions of small section of a member and large pre-pressing load can be met, the stacking load is stable, the material volume weight is close to the solid volume weight to the maximum extent, and the concrete cubic pre-pressing block has the advantage of being close to the actual construction condition to the maximum extent and is stable and reliable.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a comprehensive prepressing method and device for a tied arch bridge beam suspension construction beam lattice system.
Background
A tied arch bridge with lattice system is a bridge building widely used in traffic engineering field, the lattice system is composed of tie beams at both sides, end beams and several beams uniformly distributed in the middle, the lattice system has the characteristic that the cross sections of the tie beams and the middle beam are smaller.
The beam lattice system construction sequence is that firstly, a tie rod beam is constructed, then a cross beam is constructed, and according to the relevant construction specifications and construction safety requirements of the building engineering, a support needs to be pre-pressed in the cast-in-place concrete structure before construction, so that the inelastic deformation of the support is eliminated, the elastic deformation of the support is collected and checked, and the safety of the support is checked.
However, the conventional step-by-step preloading method is suitable for beam-by-beam preloading when both the transoms and the tie-bar beams have floor brackets. However, when the lower beam support cannot be constructed under the restriction of traffic conditions or other environmental conditions under the bridge, and the beam construction can only adopt the suspension pouring or the assembly construction attached to the tie rod beam, the traditional step-by-step prepressing method cannot be used. Thus, conventional step-by-step prepressing methods are subject to under-bridge traffic conditions or other environmental conditions.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a comprehensive prepressing method and a comprehensive prepressing device for a beam lattice system in beam suspension construction of a tied-arch bridge, which are suitable for being incapable of constructing a lower beam support under the condition of traffic conditions or other environmental conditions under a bridge, wherein the beam construction can only adopt the construction working conditions of suspension pouring or assembly depending on a tied-arch beam, a concrete cubic prepressing block is adopted as a prepressing material, the working conditions of small section of a component and large prepressing load can be met, the preloading is stable, the material volume weight is close to the entity volume weight to the maximum extent, and the comprehensive prepressing method and the device have the advantages of being close to the actual construction condition to the.
Specifically, the method is mainly realized by the following technical scheme:
a comprehensive prepressing method for a beam lattice system in beam suspension construction of a tied arch bridge comprises the following steps:
dividing the tie rod beam into a plurality of comprehensive prepressing blocks along the direction of the bridge, and stacking prepressing blocks on the tie rod beam in each comprehensive prepressing block to form a prepressing block stack;
installing a Bailey beam on the pre-pressing block stack, and installing pre-pressing blocks corresponding to the corresponding loads of the cross beam on the Bailey beam;
and reversely removing all the pre-pressing blocks.
Preferably, the stacking of the pre-pressing blocks on the tie bars in each comprehensive pre-pressing block specifically comprises: and stacking the pre-pressing blocks on the tie rod beams in each comprehensive pre-pressing block according to the equivalent load bearing or the overload according to the standard requirement.
Preferably, the pre-compact is a concrete cubic pre-compact.
Preferably, the volume of the concrete cubic pre-pressing block is 1m3。
A comprehensive prepressing device for a beam lattice system in beam suspension construction of a tied arch bridge comprises a bracket, a tied beam, a prepressing block and a Bailey beam, wherein the tied beam is positioned on the bracket; and a pre-pressing block corresponding to the corresponding load of the cross beam is also arranged on the Bailey beam.
Preferably, the pre-compact is a concrete cubic pre-compact.
Preferably, the volume of the concrete cubic pre-pressing block is 1m3。
The invention has the following beneficial effects:
the technical scheme of the invention is suitable for being incapable of being used as a lower cross beam support under the restriction of traffic conditions or other environmental conditions under a bridge, the cross beam construction can only adopt the construction working condition of hanging, pouring or assembling depending on a tie rod beam, a concrete cubic prepressing block is adopted as a prepressing material, the working conditions of small section of a member and large prepressing load can be met, the piling load is stable, the material volume weight is close to the solid volume weight to the maximum extent, and the invention has the advantages of being close to the actual construction condition to the maximum extent, and being stable and reliable.
Drawings
1. Fig. 1 is a schematic flow chart of a comprehensive preloading method for a tied arch bridge beam suspension construction beam lattice system according to an embodiment of the present invention;
2. fig. 2 is a schematic structural diagram of a comprehensive prepressing device of a tied arch bridge beam suspension construction beam lattice system provided by an embodiment of the invention.
Detailed Description
In order to make the core idea of the present invention more clearly understood, the following detailed description will be made with reference to the accompanying drawings.
Example one
As shown in fig. 1 and 2, an embodiment of the present invention provides a comprehensive preloading method for a tied arch bridge beam suspension construction beam lattice system, including the following steps:
step 10: the tie-rod beam of the tied arch bridge is divided into a plurality of comprehensive prepressing blocks along the bridge direction, and prepressing blocks are stacked on the tie-rod beam in each comprehensive prepressing block to form a prepressing block stack.
The tie bar beam is composed of a plurality of tie bar beam supports, in order to stack the prepressing blocks on the tie bar beam, the tie bar beam is divided into a plurality of comprehensive prepressing blocks along the bridge direction, the prepressing blocks are equivalently stacked on the tie bar beam in each comprehensive prepressing block according to corresponding bearing load or the prepressing blocks are stacked according to specification requirements, the specification requirements of the corresponding bearing load and the overload stacking of the tie bar beam in each comprehensive prepressing block belong to the technical field, the prior art belongs to the prior art, and the specific load calculation mode and the specification requirements are not repeated.
In a preferred embodiment, the pre-compact is a concrete cube pre-compact.
In a preferred embodiment, the volume of the concrete cubic pre-compact is 1m3。
Step 20: and installing a Bailey beam on the pre-pressing block stack, and installing a pre-pressing block corresponding to the corresponding load of the cross beam on the Bailey beam.
The bailey beam comprises a bailey sheet, a pre-pressing block corresponding to the corresponding load of the cross beam is mounted on the bailey sheet, and a calculation method of the corresponding load of the cross beam is well known by persons skilled in the art, belongs to the prior art and is not described herein again.
Step 30: and reversely removing all the pre-pressing blocks.
Specifically, according to the sequence of prepressing, the prebuckling block is dismounted in reverse order, that is, firstly, the prebuckling is followed by dismounting, and then, the prebuckling is followed by dismounting.
In conclusion, the technical scheme of the invention is suitable for being incapable of being used as a lower cross beam support under the restriction of traffic conditions or other environmental conditions under a bridge, the cross beam construction can only adopt the working conditions of hanging, pouring or assembling construction attached to a tie beam, a concrete cubic pre-pressing block is adopted as a pre-pressing material, the working conditions of small section of a component and large pre-pressing load can be met, the pile load is stable, the material volume weight is close to the entity volume weight to the maximum extent, and the invention has the advantages of being close to the actual construction condition to the maximum extent, and is stable and reliable.
Example two
The invention also provides a comprehensive prepressing device of the beam lattice system for the beam suspension construction of the tied arch bridge, which comprises a bracket, a tied beam positioned on the bracket, a prepressing block and a Bailey beam arranged on a pile of the prepressing blocks, wherein the tied beam is divided into a plurality of comprehensive prepressing blocks along the direction of the bridge, and the pile of the prepressing blocks is formed by a plurality of prepressing blocks stacked on the tied beam in each comprehensive prepressing block; and a pre-pressing block corresponding to the corresponding load of the cross beam is also arranged on the Bailey beam.
Preferably, the pre-compact is a concrete cubic pre-compact.
Preferably, the volume of the concrete cubic pre-pressing block is 1m3。
The embodiment of the invention corresponds to the comprehensive prepressing method of the beam lattice system for the beam suspension construction of the tied arch bridge, and specific implementation principles can refer to the embodiment and are not described herein again.
The foregoing detailed description of the embodiments of the present invention has been presented for the purpose of illustrating the principles and implementations of the present invention, and the description of the embodiments is only provided to assist understanding of the core concepts of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A comprehensive prepressing method for a beam lattice system in beam suspension construction of a tied arch bridge is characterized by comprising the following steps:
dividing the tie rod beam into a plurality of comprehensive prepressing blocks along the direction of the bridge, and stacking prepressing blocks on the tie rod beam in each comprehensive prepressing block to form a prepressing block stack;
installing a Bailey beam on the pre-pressing block stack, and installing pre-pressing blocks corresponding to the corresponding loads of the cross beam on the Bailey beam;
and reversely removing all the pre-pressing blocks.
2. The comprehensive prepressing method of a tied arch bridge beam suspension construction beam lattice system as claimed in claim 1, wherein the piling of the prepressing blocks on the tied beams in each comprehensive prepressing block specifically comprises: and stacking the pre-pressing blocks on the tie rod beams in each comprehensive pre-pressing block according to the equivalent load bearing or the overload according to the standard requirement.
3. The comprehensive prepressing method of the tied arch bridge beam suspension construction beam lattice system according to claim 1 or 2, wherein the prepressing block is a concrete cubic prepressing block.
4. The comprehensive prepressing method of beam-lattice system in beam-suspended construction of tied arch bridge according to claim 3, wherein the volume of said concrete cubic prepressing block is 1m3。
5. A comprehensive prepressing device for a beam lattice system in beam suspension construction of a tied arch bridge comprises a bracket and a tied beam positioned on the bracket, and is characterized by also comprising a prepressing block and a Bailey beam arranged on a prepressing block stack, wherein the tied beam is divided into a plurality of comprehensive prepressing blocks along the direction of the bridge; and a pre-pressing block corresponding to the corresponding load of the cross beam is also arranged on the Bailey beam.
6. The comprehensive prepressing device of the tied arch bridge beam suspension construction beam lattice system according to claim 5, wherein the prepressing block is a concrete cubic prepressing block.
7. The comprehensive prepressing device of beam-lattice system for beam-suspended construction of tied arch bridge according to claim 6, wherein the volume of said concrete cubic prepressing block is 1m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017221.XA CN112627048A (en) | 2021-01-07 | 2021-01-07 | Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110017221.XA CN112627048A (en) | 2021-01-07 | 2021-01-07 | Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system |
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| CN112627048A true CN112627048A (en) | 2021-04-09 |
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| CN202110017221.XA Pending CN112627048A (en) | 2021-01-07 | 2021-01-07 | Comprehensive prepressing method and device for tied arch bridge beam suspension construction beam lattice system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11181725A (en) * | 1997-12-22 | 1999-07-06 | Maeda Corp | Method for constructing horizontal beam of main tower made of concrete |
| CN103061264A (en) * | 2012-12-08 | 2013-04-24 | 中铁三局集团有限公司 | Method and device for pre-pressing high-position support single column in water |
| CN104631333A (en) * | 2015-01-29 | 2015-05-20 | 中铁港航局集团有限公司 | Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge |
| CN107460827A (en) * | 2017-08-09 | 2017-12-12 | 中国十七冶集团有限公司 | A kind of method of cast-in-situ box girder form bracing system precompressed |
| CN108824210A (en) * | 2018-07-20 | 2018-11-16 | 中交路桥华南工程有限公司 | The preloading method of bridge bracket |
-
2021
- 2021-01-07 CN CN202110017221.XA patent/CN112627048A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11181725A (en) * | 1997-12-22 | 1999-07-06 | Maeda Corp | Method for constructing horizontal beam of main tower made of concrete |
| CN103061264A (en) * | 2012-12-08 | 2013-04-24 | 中铁三局集团有限公司 | Method and device for pre-pressing high-position support single column in water |
| CN104631333A (en) * | 2015-01-29 | 2015-05-20 | 中铁港航局集团有限公司 | Moving hanger frame and method for small cross beam, small longitudinal beam and bridge deck slab cast-in-situ construction of arch bridge |
| CN107460827A (en) * | 2017-08-09 | 2017-12-12 | 中国十七冶集团有限公司 | A kind of method of cast-in-situ box girder form bracing system precompressed |
| CN108824210A (en) * | 2018-07-20 | 2018-11-16 | 中交路桥华南工程有限公司 | The preloading method of bridge bracket |
Non-Patent Citations (1)
| Title |
|---|
| 段新鸽: "梁格体系系杆拱桥中横梁悬挂装配施工技术", 《铁道建筑技术》 * |
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