两块板端应该搭接，搭接长度大约为工厂预制槽的一半(搭接时注意当地的常年风向)。
Two boards should end lap, lap length about half the prefabricated groove for the factory.
型钢可缩性支架的缩动与否，取决于支架卡缆预紧力及搭接部分两端的内力。
Whether an u-steel yielding support could yield depend on the pre-screw forces of the camps and the internal forces of both ends at the u-steel overlap parts.
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