中国港湾建设
中國港灣建設
중국항만건설
CHINA HARBOUR ENGINEERING
2014年
3期
37-42,46
,共7页
何良德%刘江林%何英发%许可
何良德%劉江林%何英髮%許可
하량덕%류강림%하영발%허가
航道工程%船闸%并列悬臂梁法%横向荷载分配%横向不平衡剪力%内力调整
航道工程%船閘%併列懸臂樑法%橫嚮荷載分配%橫嚮不平衡剪力%內力調整
항도공정%선갑%병렬현비량법%횡향하재분배%횡향불평형전력%내력조정
waterway engineering%lock%parallel cantilever method%lateral load allocation%lateral unbalance shear%internal force adjustment
为提高闸首底板分段法的计算精度及其适用范围,针对规范中横向荷载分配方法的不足,在深入分析边墩横向荷载扩散传递机理的基础上,提出并列铰接悬臂梁法;并首次进行横向整体平衡分析,给出横向不平衡剪力的分配方法。结合工程实例计算,证明横向荷载分配之后进行内力调整的必要性。提出的2结点并列悬臂梁法,能够考虑边墩高度的影响,并反映横向荷载、弯矩分配比例不同的特征。对于承受横向不对称荷载的闸首,还应进行横向不平衡剪力计算和分配。与有限元结果比较分析表明,经横向荷载分配、横向不平衡剪力分配、内力调整后,底板内力计算结果有较高的精度。
為提高閘首底闆分段法的計算精度及其適用範圍,針對規範中橫嚮荷載分配方法的不足,在深入分析邊墩橫嚮荷載擴散傳遞機理的基礎上,提齣併列鉸接懸臂樑法;併首次進行橫嚮整體平衡分析,給齣橫嚮不平衡剪力的分配方法。結閤工程實例計算,證明橫嚮荷載分配之後進行內力調整的必要性。提齣的2結點併列懸臂樑法,能夠攷慮邊墩高度的影響,併反映橫嚮荷載、彎矩分配比例不同的特徵。對于承受橫嚮不對稱荷載的閘首,還應進行橫嚮不平衡剪力計算和分配。與有限元結果比較分析錶明,經橫嚮荷載分配、橫嚮不平衡剪力分配、內力調整後,底闆內力計算結果有較高的精度。
위제고갑수저판분단법적계산정도급기괄용범위,침대규범중횡향하재분배방법적불족,재심입분석변돈횡향하재확산전체궤리적기출상,제출병렬교접현비량법;병수차진행횡향정체평형분석,급출횡향불평형전력적분배방법。결합공정실례계산,증명횡향하재분배지후진행내력조정적필요성。제출적2결점병렬현비량법,능구고필변돈고도적영향,병반영횡향하재、만구분배비례불동적특정。대우승수횡향불대칭하재적갑수,환응진행횡향불평형전력계산화분배。여유한원결과비교분석표명,경횡향하재분배、횡향불평형전력분배、내력조정후,저판내력계산결과유교고적정도。
In order to improve the accuracy and extend the application scope of gate floor longitudinal segmentation method, as the lateral load allocation method of code for ship locks is inadequate, this paper analyzes the transfer mechanism of lateral load on side piers, proposes parallel articulated cantilever method, and for the first time to conduct the analysis of lateral overall balance, then provides allocation method of lateral imbalance shear force. The calculation of engineering example shows that the internal force adjustment after lateral load allocation is necessary. The two node parallel cantilever method is able to consider the impact of side piers height, also reflects the different characteristics of lateral load and bending moment distribution ratio. For the lock head withstands lateral asymmetric load, lateral imbalanced shear calculation and allocation is also necessary. The comparative analysis with finite element results shows that after lateral load allocation, unbalanced lateral shear force allocation, internal force adjustment, the result of bottom plate internal force is highly accurate.