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四、钢束选配梁身预应力钢束的配置,弯曲和中途锚固要考虑下列因素: 1.根据梁身弯矩包络图形配置钢束以使经济合理; 2.避免采用空间曲线钢束(即既在竖直面内弯曲又在水平面内弯曲)以使钢束管道定位和穿束方便; 3.腹板内钢束的弯折角应尽可能地小些以减少张拉时的管道摩阻损失;
Fourth, the optional beam beam prestressed beam bundle configuration, bending and midway anchoring to consider the following factors: 1. According to the beam bending moment envelope configuration of the beam to make the economy reasonable; 2. Avoid the use of space curve beam (Ie both in the vertical plane bending and bending in the horizontal plane) to facilitate the positioning and beaming of the steel pipe; 3. The bending angle of the steel beam in the web should be as small as possible to reduce the friction between the pipes Resistance loss