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现行《内河小型钢丝网水泥船建造规范》(简称“内规”)9.7条规定,舱口应设围板,并要求舱口围板的甲板以下部分应符合对甲板纵桁的规定。即按“内规”7.3条设计计算。所以在强度计算时,审批部门对货舱口纵桁的计算高度只许取到甲板面为止。而实际上舱口围板和甲板纵桁是一受力构件,在同等条件下,舱口围板的高与低和围板两端距离支座舱壁板尺度大与小都会直接影响构件的受弯能力。笔者认为大开口
The existing “Code for Construction of Small Inland Riverbed Cement Concrete Ship” (hereinafter referred to as “Regulation”) 9.7 stipulates that the hatchway shall be provided with fences and the following parts of the hatch coaming plate deck shall meet the requirements for deck stringers. That is according to “regulation” 7.3 design calculation. Therefore, in the calculation of strength, approval of the hatch on the hatch height of the hatchway only allowed to take the deck so far. In fact, hatch coaming and deck girders are a force component. Under the same conditions, the height and low of hatch coamings and the distance between two ends of coamings and the size of bearing bulkhead siding will directly affect the strength of members Bending ability. I think big openings