APPARATUS PREVENTING DAMAGE SHEATH TUBE OF STEELWIRE TO RESTRESS PRESTRESS STRUCTURE

摘要

The subject innovation relates to a sheath tube to avoid damaging the device of the strand for prestressing structural material tension, and an intermediate portion contacting to the contact support member fixed to the prestressed structure, both ends is pulled by the pulling-mounted intermediate contact of the PC strand being fixed to the anchorage that is to be lubricated configuration combines the lubricating means to the contact support member, wherein the lubricating means is a slip guide pipe coupled to a steel intermediate birds of the guide support groove and / or a negative moment for preventing the birds of the guide support groove of the PC strand It is configured to be smoothly slip. The present design is a PC strand is because it is so coupled the slip guide tubes at the contact to be contacted or the like saddle bracket kit PC strands move lubricated sheath tube is prevented being ruptured by friction, sheath tube inner filling of the damaged Let that grease leakage and damage the strands of maintenance by preventing factors, as well as maintenance costs will reduce tension loss due to friction is minimized. Further, by using the stainless pipe to slip the guide tube outside the glass, as well as no extra need anticorrosive coating treatment, is prevented from eccentric load which is as absorbing the frictional force in the stainless pipe itself, which is installed in duplicate is added to the saddle bracket kit It can enhance the effect of the PC beam stiffness reinforcement work.