1、波纹管螺纹钢不是单独使用的，还必须配备配套的锚，，螺纹钢通过波纹管，波纹管两端的钢比两端短10-20cm。波纹管型:Φ40 * 2,Φ50 * 2 (mm)波纹管的作用:当防水层的崩溃,微裂隙水和排水设施的阻塞或失败,预应力可能从腐蚀,波纹管的底部是在预应力混凝土预应力钢结构防护屏障,可以防止有害物质,钢筋钢管的腐蚀。它具有无污染、具有吃苦耐劳性能，能大大提高构件的抗疲劳性能，从而保证预应力结构具有较好的耐久性。
1. Thread steel for bellows is not used alone. It must also be equipped with supporting anchors. First, the steel at both ends of the bellows is 10-20 cm shorter than that at both ends of the bellows. Bellows: 40 * 2, 50 * 2 (mm) Bellows: When the waterproof layer collapses, micro-crack water and drainage facilities block or fail, prestressing may be from corrosion, the bottom of the bellows is in the protective barrier of the pre-stressed concrete steel structure, which can prevent harmful substances, steel pipe corrosion. It has pollution-free, hard-working performance, can greatly improve the fatigue resistance of components, so as to ensure that the pre-stressed structure has good durability.
2、螺旋杆当螺旋钢绞线滚入波纹管时，将螺旋杆放入钢绞线末端，并将小钢管焊接起来，以固定螺旋杆，避免其滑脱;有些施工是在垂直插入时准备将混凝土螺杆钢倒在螺杆钢上。螺旋钢筋的作用:浇注混凝土时，可使螺纹钢与整个混凝土的接触面变大，并能更牢固地结合在一起。螺旋杆规格为:D×D×n×L=120×12×6×300(mm)。螺旋杆的规格根据施工侧的设计而有所不同。螺旋杆一般由Q235热轧带肋钢筋制成，有的由10mm圆钢制成。
2. When the spiral steel strand rolls into the bellows, the spiral rod is put into the end of the steel strand, and the small steel pipe is welded together to fix the spiral rod and avoid its slippage. In some construction, concrete screw steel is ready to be poured onto the screw steel when it is inserted vertically. The function of spiral reinforcement: When pouring concrete, the contact surface between the threaded steel and the whole concrete can be enlarged, and it can be more firmly combined. The specifications of the screw rod are: D X D X n X L = 120 X 12 X 6 X 300 (mm). The specification of screw rod varies according to the design of construction side. Spiral rods are generally made of Q235 hot-rolled ribbed steel bars, and some of them are made of 10mm Round steel.
3、将精轧螺纹钢板垫板和精轧螺钉螺母在波纹管和螺钉加固后固定在与钢板螺钉相匹配的一端，再拧上螺母。垫板和螺母的作用:起到张紧和螺杆固位的作用，在张紧钢筋时用锚钉固位。
3. Fix the finish-rolling threaded steel plate pad and the finish-rolling screw nut at the end matching the steel plate screw after the bellows and bolts are strengthened, and then screw the nut on. The role of pad and nut: play the role of tension and screw retention, in tension of steel bars with anchors.
4、排气管的一端的排气管波纹管密封,将另一端另一端的螺纹钢筋,决不能超过完成的钢筋,排气管的影响:当铸造可以排除空气波纹管,波纹管在真空状态,确保没有空气的混凝土,混凝土浇筑的质量保证。
4. Sealing the bellows of the exhaust pipe at one end of the exhaust pipe can not exceed the reinforced bar at the other end. The influence of the exhaust pipe can be eliminated when casting. The bellows are in vacuum to ensure the concrete without air and the quality assurance of concrete pouring.
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