Steel box girder self-anchored suspension bridge tower girder synchronous construction method
A technology of tower-beam synchronization and construction method, which is applied in the direction of suspension bridges, bridges, bridge parts, etc., can solve the problems of long construction period of bridges, achieve the effects of speeding up construction progress, shortening construction period, and solving limitations
Active Publication Date: 2021-04-06
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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Problems solved by technology
[0004] So far, for self-anchored suspension bridges, the construction methods for the bridge tower and the main girder are all adopting the traditional construction method, that is, the main girder is generally constructed first and then the bridge tower is constructed, or the bridge tower is completed first and then the main girder is constructed, that is, the construction method is adopted. The construction method of beams first and towers or towers and beams first makes the bridge construction period longer
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[0031] The description will be further described below in conjunction with the accompanying drawings and embodiments.
[0032] The method for synchronously constructing tower girders of steel box girder self-anchored suspension bridges implemented according to the present invention includes the following steps.
[0033] Step 1: Refer to figure 1 First set up a steel trestle bridge, construct the bottom foundation of the bridge tower 3, construct the side pier 21, and push the temporary pier 22 of the steel box girder through the steel trestle bridge;
[0034] Step 2: Refer to figure 2 , Figure 6 , on the assembling platform that a plurality of steel box girder pushes away temporary piers 22 to form, assemble framed steel box girder 11, install push away steel guide beam 13, construct bridge tower 3 lower tower columns and tower column pick-up beam 31 simultaneously; Tower column The cantilever beam 31 is located below the main beam 1; the main beam 1 is divided into two l...
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The invention discloses a steel box girder self-anchored suspension bridge tower girder synchronous construction method which is characterized in that the construction of a bridge tower and a main girder is synchronously carried out, and the method comprises the following steps: 1, a steel trestle is erected, then a foundation below the bridge tower is constructed, side piers are is constructed, and temporary piers are pushed by steel box girders; 2, the steel box girders forming a main girder are assembled on an assembling platform, a top pushing guide girder is installed, and meanwhile a lower tower column and a tower column outrigger of the bridge tower are constructed; 3, steel box girder incremental launching construction is conducted step by step in turns, and meanwhile bridge tower columns and connecting cross beams are constructed; 4, after the steel box girders are pushed in place, steel box girder inlaying section construction is conducted in turns, and meanwhile the bridge tower continues to be constructed till the construction is completed; and 5, main cable and sling construction and ancillary facility construction are conducted till bridge construction is completed. The construction progress can be obviously accelerated, so that the construction period is greatly shortened.
Description
technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a synchronous construction method for steel box girder self-anchored suspension bridge tower girders. Background technique [0002] Suspension bridge is currently the bridge structure with the largest spanning capacity. Traditional ground-anchored suspension bridges generally require the construction of bulky anchorages to anchor the main cables. If the main cables are directly anchored to the stiffened beams in an appropriate way, expensive anchorages can be eliminated, thereby evolving into a self-anchored suspension bridge. The self-anchored suspension bridge cancels the huge main cable anchorage, which not only saves the cost of building the anchorage, but also greatly reduces the requirements for geological conditions, effectively expanding the scope of application of the suspension bridge. [0003] The self-anchored suspension bridge is composed of ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E01D21/00E01D11/02E01D2/04E01D19/14E01D101/30
CPCE01D21/00E01D11/02E01D2/04E01D19/14E01D2101/30
Inventor 李华龙甄玉杰代子洲卢慧忠罗国龙刘国栋郭弘鹏李钰莹徐盟田龙
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD