四、接头形式接头形式与受力特征、施工和拼装方法有关。一般有以下几种: 1.承拉和承弯接头用于桁架受拉弦杆、受拉腹杆和横梁与节点的连接,其形式有钢夹板接头、预应力混凝土接头和预应力胶接接头三种。钢夹板接头拼装简单,现场不需张拉设备,但杆件制造复杂,精度要求高,且破坏了预应力的连续性,对结构产生 Fourth, the form of joints The form of joints and force characteristics, construction and assembly methods. There are generally the following: 1. Tensile and bending joints for the truss by pulling the chords, by the tension webs and beams and nodes connected in the form of splint splint, prestressed concrete joints and prestressed cement joints Three kinds. Steel splint splice assembly is simple, the scene without tensioning equipment, but the rod manufacturing complex, high precision, and destroyed the continuity of prestressed, the structure of the