CN110387829A - Large-scale transverse beam bracket carries out the system and operating method of precompressed by multi-point-anchoring stretching method - Google Patents
Large-scale transverse beam bracket carries out the system and operating method of precompressed by multi-point-anchoring stretching method Download PDFInfo
- Publication number
- CN110387829A CN110387829A CN201910747603.0A CN201910747603A CN110387829A CN 110387829 A CN110387829 A CN 110387829A CN 201910747603 A CN201910747603 A CN 201910747603A CN 110387829 A CN110387829 A CN 110387829A
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- Prior art keywords
- bracket
- precompressed
- anchoring
- transverse beam
- tensioning
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Classifications
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of large-scale transverse beam brackets to pass through the system and operating method of multi-point-anchoring tensioning progress precompressed；The following steps are included: (1) anchor system is arranged when operation；(2) bracket installation and tensioning system arrangement；(3) tensioning checking bracket.Implementation through the invention: (1) it by anchoring stretching method checking bracket, does not need to prepare a large amount of prepressing materials, does not need to carry out prolonged material handling yet；(2) anchoring stretching method can carry out precompressed inspection to bracket before rack body is set up and finished, and carry out precompressed again after setting up without whole, working efficiency can be improved, shorten the construction period；(3) weight is counted relative to using precompressed in kind, controls tension stress using jack oil meter reading, precompressed precision is high；(4) multi-point-anchoring stretching method is simple, convenient, reduces due to the security risk that handling is likely to occur above and below prepressing materials.
Description
Technical field
The present invention relates to field of civil engineering, in particular to a kind of large-scale transverse beam bracket passes through multi-point-anchoring stretching method
The method for carrying out precompressed.
Background technique
Currently, domestic large-scale transverse beam bracket is generally using using the method in kind for carrying out precompressed, the method mainly needs to transport
More material object also needs to carry out repeatedly to lift to pile precompressed is carried out on bracket, and material utilization amount is big and the lifting time is long, effect compared with
It is low, and carry out preloading method using anchoring stretching method and be greatly improved in effect, greatly shorten on the time, stress is more
It is clear.The crossbeam that especially pier stud is higher, weight is bigger can more embody its utility value.
Summary of the invention
It is an object of the invention to provide a kind of large-scale transverse beam bracket herein to carry out precompressed by multi-point-anchoring stretching method
System and operating method；Anchoring below bracket is made it through, carries out tensioning using jack, reduces the lifting used time of precompressed in kind
And precompressed weight in kind checks support stability there are the situation of error, and eliminates bracket inelastic deformation.
The invention is realized in this way the system that a kind of large-scale transverse beam bracket carries out precompressed by anchoring stretching method, special
Sign is；Including anchor system is arranged in the lower section of large-scale transverse beam bracket fulcrum, buries on cushion cap and made on embedded board or basement rock
Make dowel and anchoring counter pull is provided, reaction frame is set on embedded board, and steel strand wires are fixed with corresponding main distribution beam, bracket
Anchorage and jack are installed at the anchor system of lower section, and are attached with steel strand wires.
A kind of large-scale transverse beam bracket carries out the operating method of precompressed by multi-point-anchoring stretching method, it is characterised in that: including
Following steps:
Step 1: anchor system arrangement: large-scale transverse beam bracket is generally divided into console or corbel type bracket, by crossbeam
The stress condition of each fulcrum can be obtained in the force analysis of support system, and anchor system is arranged in the lower section of each fulcrum, is holding
Bury production dowel on embedded board or basement rock on platform and anchoring counter pull be provided, reaction frame is set on embedded board, according to fulcrum by
Power selects suitable jack to be checked, and prepares corresponding steel strand wires and anchorage；
Step 2: bracket installation and tensioning system arrangement: carrying out bracket according to drawing requirement and set up, and bracket is set up to longitudinal main point
When with beam, installation steel strand wires are fixed with main distribution beam, anchor system installation anchorage and jack below bracket, and twist with steel
Line is attached；
Step 3: tensioning checking bracket: tensioning is carried out using jack pair bracket node, classification increases stretching force, and observes branch
Frame deformation and weld seam situation, stretching force are anchored after reaching design value, persistently observation deformation of timbering situation, and 24 hours
Afterwards, it is unloaded step by step, records deformation of timbering situation, calculate rack elasticity deformation and inelastic deformation.
It is carried out in advance the present invention has the advantage that the invention discloses a kind of large-scale transverse beam brackets by multi-point-anchoring tensioning
The system and operating method of pressure；Including anchor system is arranged in the lower section of large-scale transverse beam bracket fulcrum, buried on cushion cap pre-buried
Dowel being made on plate or basement rock, anchoring counter pull being provided, reaction frame is set on embedded board, steel strand wires and corresponding main distribution beam
It is fixed, anchorage and jack is installed, and be attached below bracket at anchor system with steel strand wires.It include following when operation
Step: (1) anchor system is arranged；(2) bracket installation and tensioning system arrangement；(3) tensioning checking bracket；Previous large-scale transverse beam branch
Frame is all made of the in kind method for carrying out precompressed, and there are long construction periods for the method, and precompressed material object weight is big, and security risk is big etc. asks
Topic.Implementation through the invention: (1) it by anchoring stretching method checking bracket, does not need to prepare a large amount of prepressing materials, be not required to yet
Carry out prolonged material handling；(2) anchoring stretching method can carry out precompressed to bracket before rack body is set up and finished
It examines, carries out precompressed again after setting up without whole, working efficiency can be improved, shorten the construction period；(3) relative to using real
Object precompressed counts weight, controls tension stress using jack oil meter reading, precompressed precision is high；(4) multi-point-anchoring
Daraf(reciprocal of farad) is simple, convenient, reduces due to the security risk that handling is likely to occur above and below prepressing materials.
Detailed description of the invention
Fig. 1 is anchor system arrangement schematic diagram of the present invention；
Fig. 2 is anchored end detail drawing of the present invention.
Wherein: embedded board 1, reaction frame 2, steel strand wires 3, anchorage 4, jack 5, support foot 6.
Specific embodiment
Below in conjunction with attached drawing 1- Fig. 2, the present invention is described in detail, technical solution in the embodiment of the present invention into
Row clearly and completely describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
Every other embodiment, shall fall within the protection scope of the present invention.
The purpose of the present invention is to provide a kind of large-scale transverse beam brackets to pass through the method that multi-point-anchoring stretching method carries out precompressed,
Keep the time used in its precompressed short, high-efficient, stress is clear and can safely and effectively construct.
1- Fig. 2 the present invention is further explained specific embodiment with reference to the accompanying drawing: a kind of large-scale transverse beam bracket passes through anchor
Gu the system of stretching method progress precompressed, it is characterised in that；Including anchor system, In is arranged in the lower section of large-scale transverse beam bracket fulcrum
Production dowel on embedded board or basement rock being buried on cushion cap, anchoring counter pull being provided, reaction frame 2, steel strand wires 3 are set on embedded board 1
It is fixed with corresponding main distribution beam, anchorage 4 and jack 5 is installed, and carry out below bracket at anchor system with steel strand wires 3
Connection.
A kind of large-scale transverse beam bracket carries out the operating method of precompressed by multi-point-anchoring stretching method, improves rate, and can pacify
It effectively constructs entirely.
Step 1: anchor system arrangement:
Large-scale transverse beam bracket is generally divided into console or corbel type bracket, by the force analysis to overarm brace system,
The stress condition that each fulcrum can be obtained is arranged anchor system in the lower section of each fulcrum, embedded board or base is buried on cushion cap
Dowel being made on rock, anchoring counter pull being provided, reaction frame 2 is set on embedded board 1, it is suitable very heavy according to the selection of fulcrum stress
Top 5 is checked, and prepares corresponding steel strand wires 3 and anchorage 4；
Step 2: bracket installation and tensioning system arrangement:
Bracket is carried out according to drawing requirement to set up, when bracket is set up to longitudinal main distribution beam, installation steel strand wires 3 and main distribution beam into
Row is fixed, anchor system installation anchorage 4 and jack 5 below bracket, and is attached with steel strand wires 3；
Step 3: tensioning checking bracket:
Tensioning is carried out to bracket node using jack 5, classification increases stretching force, and observes deformation of timbering situation and weld seam feelings
Condition, stretching force are anchored after reaching design value, are persistently observed deformation of timbering situation and are unloaded step by step after 24 hours, are recorded
Deformation of timbering situation calculates rack elasticity deformation and inelastic deformation.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (2)
1. the system that a kind of large-scale transverse beam bracket carries out precompressed by anchoring stretching method, it is characterised in that；It is included in large-scale transverse beam
Anchor system is arranged in the lower section of bracket fulcrum, and production dowel on embedded board or basement rock is buried on cushion cap and provides anchoring counter pull,
Reaction frame (2) are set on embedded board (1), steel strand wires (3) are fixed with corresponding main distribution beam, anchor system below bracket
Place's installation anchorage (4) and jack (5), and be attached with steel strand wires (3).
2. the operating method that a kind of large-scale transverse beam bracket carries out precompressed by anchoring stretching method, it is characterised in that: including following step
It is rapid:
Step 1: anchor system arrangement:
Large-scale transverse beam bracket is generally divided into console or corbel type bracket, by the force analysis to overarm brace system,
The stress condition that each fulcrum can be obtained is arranged anchor system in the lower section of each fulcrum, embedded board or base is buried on cushion cap
Dowel being made on rock, anchoring counter pull being provided, reaction frame (2) are set on embedded board (1), it is suitable to be selected according to fulcrum stress
Jack is checked, and prepares corresponding steel strand wires (3) and anchorage (4)；
Step 2: bracket installation and tensioning system arrangement:
It carries out bracket as requested to set up, when bracket is set up to longitudinal main distribution beam, installation steel strand wires (3) and main distribution beam are carried out
It is fixed, anchor system installation anchorage (4) and jack (5) below bracket, and be attached with steel strand wires；
Step 3: tensioning checking bracket:
Tensioning is carried out to bracket node using jack (5), classification increases stretching force, and observes deformation of timbering situation and weld seam feelings
Condition, stretching force are anchored after reaching design value, are persistently observed deformation of timbering situation and are unloaded step by step after 24 hours, are recorded
Deformation of timbering situation calculates rack elasticity deformation and inelastic deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747603.0A CN110387829A (en) | 2019-08-14 | 2019-08-14 | Large-scale transverse beam bracket carries out the system and operating method of precompressed by multi-point-anchoring stretching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910747603.0A CN110387829A (en) | 2019-08-14 | 2019-08-14 | Large-scale transverse beam bracket carries out the system and operating method of precompressed by multi-point-anchoring stretching method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110387829A true CN110387829A (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910747603.0A Pending CN110387829A (en) | 2019-08-14 | 2019-08-14 | Large-scale transverse beam bracket carries out the system and operating method of precompressed by multi-point-anchoring stretching method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576223A (en) * | 2020-05-12 | 2020-08-25 | 陕西中立检测鉴定有限公司 | Main tower lower cross beam support pre-pressing device and pre-pressing method thereof |
Citations (6)
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|---|---|---|---|---|
| KR20020005175A (en) * | 2001-04-25 | 2002-01-17 | 노윤근 | Method for reinforcing resistance force of a bridge using a prefabricated bracket |
| CN103352429A (en) * | 2013-07-12 | 2013-10-16 | 中铁八局集团有限公司 | Bracket counter pull loading pre-pressing device and tensioning pre-pressing method thereof |
| WO2018098963A1 (en) * | 2016-12-02 | 2018-06-07 | 广东中科华大工程技术检测有限公司 | Testing device for static load of foundation pile |
| CN108193605A (en) * | 2018-02-24 | 2018-06-22 | 中交路桥建设有限公司 | No. 0 block bracket prepressing structure of continuous beam bridge pier in water |
| CN108827683A (en) * | 2018-07-20 | 2018-11-16 | 中国水利水电第七工程局有限公司 | A kind of bridge bracket reverse drawing precompressed mechanism and its pre- pressure detection method |
| CN211171631U (en) * | 2019-08-14 | 2020-08-04 | 四川路桥华东建设有限责任公司 | System for pre-pressing large-scale beam support through multi-point anchoring and stretching method |
-
2019
- 2019-08-14 CN CN201910747603.0A patent/CN110387829A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020005175A (en) * | 2001-04-25 | 2002-01-17 | 노윤근 | Method for reinforcing resistance force of a bridge using a prefabricated bracket |
| CN103352429A (en) * | 2013-07-12 | 2013-10-16 | 中铁八局集团有限公司 | Bracket counter pull loading pre-pressing device and tensioning pre-pressing method thereof |
| WO2018098963A1 (en) * | 2016-12-02 | 2018-06-07 | 广东中科华大工程技术检测有限公司 | Testing device for static load of foundation pile |
| CN108193605A (en) * | 2018-02-24 | 2018-06-22 | 中交路桥建设有限公司 | No. 0 block bracket prepressing structure of continuous beam bridge pier in water |
| CN108827683A (en) * | 2018-07-20 | 2018-11-16 | 中国水利水电第七工程局有限公司 | A kind of bridge bracket reverse drawing precompressed mechanism and its pre- pressure detection method |
| CN211171631U (en) * | 2019-08-14 | 2020-08-04 | 四川路桥华东建设有限责任公司 | System for pre-pressing large-scale beam support through multi-point anchoring and stretching method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111576223A (en) * | 2020-05-12 | 2020-08-25 | 陕西中立检测鉴定有限公司 | Main tower lower cross beam support pre-pressing device and pre-pressing method thereof |
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