论文部分内容阅读
斜拉结构是新型的承重跨越体系,它具有自重轻,跨度大,结构经济合理,施工简易、快速、便于拼装,造型美观等特点。斜拉结构主要应用于桥梁工程。利用斜拉结构的跨越能力,将其运用到渡槽工程中是国内水利工程建设中的一项新技术。斜拉渡槽的结构体系是由塔架、槽墩、斜拉索及主梁四大部分组成。它的主要特点是通过塔顶的斜拉索形成主梁的弹性支承点,从而降低了主梁的弯矩,增大了跨越能力。由于拉索是弹性支承,它的刚度可以改变,因此可以对拉索施加预拉力,并适当调整拉索刚度和预拉力,使梁、塔各主要部位的位移和内力都在比较理想的范围变化。斜拉索的水平分力对槽身纵向施加
Cable-stayed structure is a new type of load-bearing spanning system. It has the characteristics of light weight, large span, economical and reasonable structure, simple and quick construction, easy assembly and beautiful appearance. Cable-stayed structure is mainly used in bridge engineering. It is a new technology in the construction of domestic water conservancy projects to utilize the spanning ability of the cable-stayed structure in the aqueduct project. The structure system of cable-stayed aqueduct consists of tower, slot pier, stay cable and main beam. Its main feature is that the elastic support point of the main beam is formed through the stay cable, thereby reducing the bending moment of the main beam and increasing the span capability. Since the cable is elastically supported, its rigidity can be changed so that prestress can be applied to the cable and the cable stiffness and pre-tension can be appropriately adjusted so that the displacements and internal forces of the main parts of the beam and tower are all within the ideal range . The horizontal component of the stay cable is applied longitudinally to the body