向家坝水电站4 000 k N/1 250 k N双向门式启闭机为目前国内在建及投入运行中跨度最大的水电站双向门式启闭机。通过多方面的技术研究,在设计中采取一系列的关键技术措施,解决了门式启闭机特大起升载荷、超高工作扬程、超大门式启闭机...向家坝水电站4 000 k N/1 250 k N双向门式启闭机为目前国内在建及投入运行中跨度最大的水电站双向门式启闭机。通过多方面的技术研究,在设计中采取一系列的关键技术措施,解决了门式启闭机特大起升载荷、超高工作扬程、超大门式启闭机跨度等诸多技术难点,并在水电行业内首次设计采用一刚性腿一柔性腿的门架结构形式,填补了行业空白。展开更多
The rotation of skew bridges in the plane is a common phenomenon in engineering. Traditional measure is to setup pins or limiting displacement with lateral bearings, but the result is not satisfactory. In order to sol...The rotation of skew bridges in the plane is a common phenomenon in engineering. Traditional measure is to setup pins or limiting displacement with lateral bearings, but the result is not satisfactory. In order to solve this problem, the reason for the rotation in the plane is found by philosophy analysis and an idea regarding the application of slantleg frame skew bridges without abutment is brought forward in this paper. Theory and engineering practices indicate that slant-leg rigid frame bridges without abutment can restrain the rotation of skew bridges in the plane to the utmost extent because of its structural characteristics and can fundamentally solve the tough defect of skew bridges.展开更多
文摘向家坝水电站4 000 k N/1 250 k N双向门式启闭机为目前国内在建及投入运行中跨度最大的水电站双向门式启闭机。通过多方面的技术研究,在设计中采取一系列的关键技术措施,解决了门式启闭机特大起升载荷、超高工作扬程、超大门式启闭机跨度等诸多技术难点,并在水电行业内首次设计采用一刚性腿一柔性腿的门架结构形式,填补了行业空白。
文摘The rotation of skew bridges in the plane is a common phenomenon in engineering. Traditional measure is to setup pins or limiting displacement with lateral bearings, but the result is not satisfactory. In order to solve this problem, the reason for the rotation in the plane is found by philosophy analysis and an idea regarding the application of slantleg frame skew bridges without abutment is brought forward in this paper. Theory and engineering practices indicate that slant-leg rigid frame bridges without abutment can restrain the rotation of skew bridges in the plane to the utmost extent because of its structural characteristics and can fundamentally solve the tough defect of skew bridges.
