土建专业毕业设计外文文献翻译

土建专业毕业设计外文文献翻译内容摘要：

protection, makes one week level along the building outer wall to evade the mine belt, between the belt and the belt the vertical range ≤6m, in the outer wall all metal parapet, the windows and doors with evade the mine belt to connect reliably, evade the mine belt to connect reliably again with the downlead. The vertical placing39。 s metal pipeline and the metal peak and the bottom end and the antimine device reliable connection, the goal lies in the equipotential, because and the both sides connection causes it to form the parallel with the downlead, causes the thunder electric current news fast to enter. three, antiradar electric currents after downlead and when grounding has the high electric potential pletes against long jab thunder, the thunder electric wave invasion and the thunder and lightning to the hardware or electrical line counterattack measure induces, is not a plete antiradar design. Because, in the building mostly uses together the grounding at present, when thunder long jab in this building antimine device, the supposition flows through approaches the low pressure electric installation place grounding the thunder electric current is 20KA, when impact earth resistance =1Ω, in the grounding the electric potential elevates is 20KV, but the general indoor low pressure installment bears the striking potential most to be high is 8KV. Its result causes the low pressure electric installation insulation to be weak place is possibly perated creates the short circuit, has the fire, to damage the equipment, this is very dangerous. Therefore, gives the enough value in the design, realizes omnidirectionally, the multilevel antiradar works to the antiradar building, causes the thunder and lightning the influence to reduce to the building is building for highpressured coil, highpressured, the low pressure side each on supposes the arrester, with protects by the highpressured coil in thunder and lightning and the operation (circuit breaker movement, throws cuts big electric motor and condenser bank and so on) the overvoltage. The electronic installation are many and the important construction, installs the overvoltage protection again in the low pressure power distribution branch, does for the reserve protection, mainly uses in further suppressing after the pretage protection limit on the surplus overvoltage and the power line the overvoltage which produces by the induction or the building for low pressure coil, installs the overvoltage protector in the power source total coil in place. four, about meet dodges to 毕业论文 4 meet dodges the direct truncation the lightning rod which is struck by lightning, to evade the mine belt (line), the lightning protection work, as well as serves as the metal roofing which and the steel work meets dodges and so on. In many buildings, the roofing for on person roofing, is high to the artistic request, according to the conventional procedure, clearly spreads the lightning protection work with the garden steel to do meets dodges is artistic on the influence, this standard to two kind of antiradar buildings in two, three, eight, nine section of building pointed out that with in the reinforced concrete roofing, Liang, column39。 s steel bar achievement meets suitably dodges, in the practical application, may use in the roofing parapet wall the capping steel bar to。