CN112112079A - Longitudinal temporary limiting device on top of cable-stayed bridge tower - Google Patents
Longitudinal temporary limiting device on top of cable-stayed bridge tower Download PDFInfo
- Publication number
- CN112112079A CN112112079A CN202011093690.1A CN202011093690A CN112112079A CN 112112079 A CN112112079 A CN 112112079A CN 202011093690 A CN202011093690 A CN 202011093690A CN 112112079 A CN112112079 A CN 112112079A
- Authority
- CN
- China
- Prior art keywords
- tower
- stopper
- girder
- main beam
- support
- 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
Classifications
-
- 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
-
- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a longitudinal temporary limiting device at the top of a cable-stayed bridge tower, which is arranged between a tower body and a main beam, wherein two tower body limiting blocks are symmetrically arranged on the top end surface of the tower body, a main beam limiting block positioned between the two tower body limiting blocks is arranged on the bottom end surface of the main beam, and a supporting mechanism is also arranged between the tower body and the main beam, and the longitudinal temporary limiting device is characterized in that: stop device include the support mound of two symmetric distributions, these two support mounds are located between two body of the tower stoppers, and the top face of supporting the mound contacts with the bottom face of girder stopper, be provided with the cushion between body of the tower stopper and girder stopper and copy the pad, just the cushion with copy the bottom face that fills up with support mound contact, stop device still include two and distribute the pad roof beam in the body of the tower stopper outside, these two pad roof beams connect as an organic wholely through the finish rolling screw-thread steel.
Description
Technical Field
The invention relates to the field of bridge and cable tower construction, in particular to a longitudinal temporary limiting device at the top of a cable-stayed bridge tower.
Background
The construction method of cantilever erection is generally adopted during the construction of the main beam of the large-span cable-stayed bridge, due to the asymmetry of the cable force of the stay cable, unbalanced horizontal force towards one side can be generated in the process of tensioning the stay cable to cause the main beam to move longitudinally (along the length direction of the main beam), at the moment, a longitudinal temporary limiting device of the main beam is needed to counteract the unbalanced horizontal force generated by tensioning the stay cable, the displacement of the main beam is limited, the traditional longitudinal temporary limiting device is a limiting stop block generally, or a large number of embedded parts are embedded in the top of the tower, and then counter-force devices are arranged on the embedded parts to realize the temporary limiting of the main beam.
However, the unbalanced horizontal force generated by the span cable-stayed bridge is generally more than one hundred tons and even more than one thousand tons, which causes the following disadvantages in the traditional method:
1. only the limit stop is arranged, so that a large safety risk exists in construction;
2. the horizontal thrust of hundreds of tons or even more than thousands of tons needs to be offset by the counterforce device and the embedded part, so that the counterforce device and the embedded part are required to have enough stability, and the construction difficulty is increased.
3. A large number of embedded parts are embedded in the tower top, the position is guaranteed to be accurate, and the difficulty of the installation process is high.
4. The embedded part can have the condition of mutual conflict with pier shaft reinforcing bar, both influences the atress of embedded part and influences the stability of tower body again, need carry out repairing to the pier shaft after the construction moreover, and construction procedure is numerous and diverse.
There is therefore a need for a method or apparatus that addresses the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a longitudinal temporary limiting device which is safe and reasonable in structural design, simple and convenient to install and dismantle and cannot cause large influence on a tower body structure.
The technical solution of the invention is as follows: the utility model provides a vertical interim stop device at cable-stay bridge top of tower, stop device set up between body of the tower 1 and girder 2, be provided with two body of the tower stopper 3 on the top face of body of the tower 1 symmetrically, be provided with the girder stopper 4 that is located between two body of the tower stopper 3 on the bottom face of girder 2, still be provided with supporting mechanism 5, its characterized in that between body of the tower 1 and the girder 2: stop device include two symmetric distribution's support mound 6, these two support mounds 6 are located between two body of the tower stopper 3, and support the top face of mound 6 and the bottom face contact of girder stopper 4, be provided with cushion 7 and copy pad 8 between body of the tower stopper 3 and girder stopper 4, just cushion 7 and copy the bottom face that fills up 8 and support mound 6 contact, stop device still include two and distribute the pad roof beam 9 in the body of the tower stopper 3 outside, these two pad roof beams 9 are connected as an organic wholely through finish rolling screw-thread steel 10.
Compared with the prior art, the invention has the following advantages:
the longitudinal temporary limiting device for the tower top of the cable-stayed bridge in the structural form has the advantages of simple structure, ingenious design and reasonable layout, and is designed into a special structure aiming at the problems of the traditional limiting device or structure. Compared with the prior art, the device has the advantages that the stress is clear, the limit stop blocks on the two sides are stressed together, the reliability is high, embedded parts do not need to be embedded in the pier body, the influence on the structure of the tower body is small, the installation and the dismounting are convenient, the construction process is greatly simplified, the construction of bridges with similar structures of the tower body can be continuously reversed, and the construction cost is saved. Therefore, the method has multiple advantages, is particularly suitable for popularization and application in the field, and has very wide market prospect.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of an embodiment of the present invention.
Detailed Description
The following description will explain embodiments of the present invention with reference to the accompanying drawings. As shown in fig. 1 and 2: a longitudinal temporary limiting device at the top of a cable-stayed bridge tower is arranged between a tower body 1 and a main beam 2, two tower body limiting blocks 3 are symmetrically arranged on the top end surface of the tower body 1, a main beam limiting block 4 positioned between the two tower body limiting blocks 3 is arranged on the bottom end surface of the main beam 2, a supporting mechanism 5 is also arranged between the tower body 1 and the main beam 2, the limiting device comprises two supporting piers 6 which are symmetrically distributed, the two support piers 6 are positioned between the two tower body limiting blocks 3, the top end surfaces of the support piers 6 are contacted with the bottom end surfaces of the main beam limiting blocks 4, a cushion block 7 and a shoveling pad 8 are arranged between the tower body limiting block 3 and the main beam limiting block 4, the bottom end surfaces of the cushion block 7 and the shoveling pad 8 are contacted with the support pier 6, the limiting device further comprises two pad beams 9 distributed on the outer side of the tower body limiting block 3, and the two pad beams 9 are connected into a whole through finish-rolled deformed steel bars 10.
The working process of the longitudinal temporary limiting device at the top of the cable-stayed bridge tower in the embodiment of the invention is as follows: firstly, arranging a support pier 6 between two tower body limiting blocks 3, then plugging a cushion block 7 into a space between the tower body limiting blocks 3 and a main beam limiting block 4, and finally plugging a shoveling pad 8 because the cushion block 7 cannot be directly manufactured into a size completely consistent with the distance between the tower body limiting blocks 3 and the main beam limiting block 4, so that the space between the tower body limiting blocks 3 and the main beam limiting blocks 4 is completely plugged, and at the moment, the cushion block 7 and the shoveling pad 8 are also supported by the support pier 6;
then prevent to fill up roof beam 9 in the outside of two body of the tower stopper 3 to utilize finish rolling screw-thread steel 10 to penetrate in the connecting hole that two pad roof beam 9 tip seted up, utilize fastener or welded mode to be fixed with finish rolling screw-thread steel 9 with filling up roof beam 9, utilize the power that two pad roof beams 9 tighten up to the inboard, guarantee foretell body of the tower stopper 3, girder stopper 4, cushion 7 and copy pad 8 and form firm, can't take place the integrative structure of relative displacement, alright prevent like this in the work progress that the girder takes place vertical (along the length direction of girder) displacement.
Claims (1)
1. The utility model provides a vertical interim stop device at cable-stay bridge top of tower, stop device set up between body of the tower (1) and girder (2), be provided with two body of the tower stopper (3) on the top face of body of the tower (1) symmetrically, be provided with girder stopper (4) that are located between two body of the tower stopper (3) on the bottom face of girder (2), still be provided with supporting mechanism (5), its characterized in that between body of the tower (1) and girder (2): stop device include support mound (6) of two symmetric distributions, these two support mounds (6) are located between two body of the tower stopper (3), and support the bottom face contact of top face and girder stopper (4) of mound (6), be provided with cushion (7) and copy pad (8) between body of the tower stopper (3) and girder stopper (4), just cushion (7) and copy the bottom face and the contact of support mound (6) that fill up (8), stop device still include two and distribute pad roof beam (9) in body of the tower stopper (3) outside, these two pad roof beams (9) are connected as an organic wholely through finish rolling screw-thread steel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093690.1A CN112112079A (en) | 2020-10-14 | 2020-10-14 | Longitudinal temporary limiting device on top of cable-stayed bridge tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011093690.1A CN112112079A (en) | 2020-10-14 | 2020-10-14 | Longitudinal temporary limiting device on top of cable-stayed bridge tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112112079A true CN112112079A (en) | 2020-12-22 |
Family
ID=73798219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011093690.1A Pending CN112112079A (en) | 2020-10-14 | 2020-10-14 | Longitudinal temporary limiting device on top of cable-stayed bridge tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112112079A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695637A (en) * | 2020-12-24 | 2021-04-23 | 云南交投公路建设第二工程有限公司 | Tower beam temporary consolidation supporting structure easy to unload quickly and manufacturing and construction process |
| CN113356058A (en) * | 2021-04-30 | 2021-09-07 | 广西大学 | Bracing device and mounting structure for bridge tower column construction |
-
2020
- 2020-10-14 CN CN202011093690.1A patent/CN112112079A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112695637A (en) * | 2020-12-24 | 2021-04-23 | 云南交投公路建设第二工程有限公司 | Tower beam temporary consolidation supporting structure easy to unload quickly and manufacturing and construction process |
| CN112695637B (en) * | 2020-12-24 | 2022-11-29 | 云南交投公路建设第二工程有限公司 | Tower beam temporary consolidation supporting structure easy to unload quickly and manufacturing and construction process |
| CN113356058A (en) * | 2021-04-30 | 2021-09-07 | 广西大学 | Bracing device and mounting structure for bridge tower column construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108824193B (en) | Method for quickly dismantling and installing bridge superstructure and replacing system thereof | |
| CN112112079A (en) | Longitudinal temporary limiting device on top of cable-stayed bridge tower | |
| CN110284535B (en) | Vertical load loading device for civil engineering field test | |
| CN103911957A (en) | Prestressed continuous box-girder cantilever construction basket | |
| CN109868750B (en) | Four-point supporting pushing system and pushing method for simply supported steel truss girder | |
| CN205636496U (en) | A interim strutting arrangement that is used for support frame bridge crane and whole hole case roof beam | |
| CN111945568B (en) | Temporary limiting structure and method for arc-shaped tower body ultra-wide steel box girder cable-stayed bridge tower beam | |
| CN108385539B (en) | Long-distance pushing construction method for steel-concrete combined beam span arch ring of deck arch bridge | |
| CN112854008A (en) | Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof | |
| CN109629449B (en) | Mounting and positioning support and alignment method for steel-concrete combined section of arch foot of steel box arch bridge | |
| CN112376440B (en) | Construction process for non-closure hoisting of main beam of cable-stayed bridge | |
| CN213681763U (en) | Longitudinal temporary limiting device on top of cable-stayed bridge tower | |
| CN204626266U (en) | Single column pier bridge exempts to build overturning or slip resistance analysis steel structure reinforcing device | |
| CN111101434B (en) | Cable-stayed bridge with tensioned midspan girder | |
| CN112726411A (en) | Integral dragging construction method for single-hole large cantilever steel truss girder | |
| CN205242238U (en) | Be applied to self anchored suspension bridge's main girder structure | |
| CN215252409U (en) | Be applied to support mound that T constructs bridge and demolishs | |
| CN210194449U (en) | Tower beam temporary consolidation structure for construction of main beam of semi-floating body system cable-stayed bridge | |
| CN110528911A (en) | Both wired protecting canopy frame, protection canopy and installation method | |
| CN220414960U (en) | Tool for eliminating load settlement of erection support in existing culvert | |
| CN219010991U (en) | Temporary construction platform for longitudinal joint of top plate of steel box girder | |
| CN205421048U (en) | A prestressed anchorage roof beam that is used for frame body all alone prestressing force stretch -draw outward | |
| CN217870037U (en) | Connecting device for supporting legs and piers of high-speed railway section beam bridge erecting machine | |
| CN205205676U (en) | Portable beiLei beam operation platform of cast -in -situ box girder | |
| CN220927562U (en) | Overhead support reinforcing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |