发明名称 |
Unbalanced bascule bridge with concrete slab roadway |
摘要 |
An unbalanced bascule bridge having an unbalanced bridge span including a pair of longitudinal girders with a low torsional stiffness interconnected at a pivoting end by a torsionally rigid cross-girder and interconnected along a longitudinal expanse of the longitudinal girders by a steel frame which forms a closely spaced lattice for supporting a relatively thin, lightweight concrete roadway deck. The bascule bridge span is raised and lowered by an actuator assembly including a plurality of hydraulic cylinders pivotally mounted on support columns and corresponding piston rods which apply a torque to the cross-girder through crank-plates welded to the cross-girder and pivotally interconnected to a base. The cross-girder isolates the longitudinal girders from all support and reaction forces while raising and lowering the bascule bridge span.
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申请公布号 |
US5454127(A) |
申请公布日期 |
1995.10.03 |
申请号 |
US19940219776 |
申请日期 |
1994.03.30 |
申请人 |
TENG & ASSOCIATES, INC. |
发明人 |
DVORAK, IVAN;NAIR, SHANKAR;PATEL, VINOD C. |
分类号 |
E01D15/06;(IPC1-7):E01D15/00 |
主分类号 |
E01D15/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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