Method for judging anchoring depth of arch support built-in foundation of deck type arch bridge
A basic and deep technology, which is applied in the field of judging the anchorage depth of the embedded foundation of the abutment of the arch bridge, can solve the problems of small embedded depth, threat to the safety of the whole bridge structure, failure of the abutment foundation, etc., so as to improve safety Sex, method, scientific, reliable and practical effect
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[0024] For example, the main span of the steel truss arch bridge is an overhead railway steel truss arch bridge with a main span of 490m, such as figure 1 As shown, the steel truss arch ring 3 has a rise height of 109.5m and a rise-span ratio of 1 / 4.475. Its cross-section adopts four trusses, and a total of 13 arch piers 1 are arranged symmetrically. The steel box girder is adopted, and the abutment foundation type of the main bridge adopts the embedded foundation 4, which is divided into left and right horizontally, and the cross-sectional size is 8m×24m. 63m, the designed anchorage depth is 38.9m, the inclination angle of the embedded foundation 4 with a large mileage is 40°, the heights are 55m and 60m respectively, and the designed anchorage depth is 30.2m, and the rock formation with a small mileage is marl sandwiched with crushed rock , the large mileage rock formation is basalt interbedded with weak rock.
[0025] A method for judging the anchorage depth of an embedded...
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