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A platform for research: civil engineering, architecture and urbanism
Transverse large-tonnage damping system for tower-connected bridge and design method of transverse large-tonnage damping system
The invention relates to a design method of a transverse large-tonnage damping system of a linked tower bridge, which comprises the following steps: acquiring an internal force response value of a linked tower structure under the earthquake action of E1 and E2 so as to determine the vertical elastic rigidity and yield force of the transverse large-tonnage damping system; determining an axial rigidity target value and a yield force target value of a single buckling restrained brace damper according to the vertical elastic rigidity and the yield force of the transverse large-tonnage damping system; the total rigidity of the buckling restrained brace damper is determined on the basis of parameters of a buckling component in the buckling restrained brace damper, and the lengths of a core section, a transition section and a connecting section in the buckling component are adjusted, so that the total rigidity of the single buckling restrained brace damper is within a set deviation range. The method provided by the invention has a simple and feasible process, the total rigidity can easily meet a set deviation range by adjusting the length of each section of the buckling component, and the designed transverse large-tonnage damping system can provide relatively strong transverse connection rigidity for the tower connection structure, and can dissipate earthquake energy through buckling of the structure, so that the seismic energy is greatly reduced, and the energy consumption is reduced. And the technical requirements of large damping force, large elastic rigidity and small displacement energy consumption between structures of the tower connecting structure bridge are effectively met.
本申请涉及一种联塔桥梁横向大吨位阻尼体系的设计方法，包括：获取联塔结构在E1和E2地震作用下的内力响应值，以确定横向大吨位阻尼体系的竖向弹性刚度和屈服力；根据横向大吨位阻尼体系的竖向弹性刚度和屈服力确定单台屈曲约束支撑阻尼器的轴向刚度目标值和屈服力目标值；基于屈曲约束支撑阻尼器中屈曲构件的参数，确定屈曲约束支撑阻尼器的总刚度，调整屈曲构件中核心段、过渡段、连接段的长度，使得单台屈曲约束支撑阻尼器的总刚度在设定偏差范围内。本申请提供的方法具有简单易行的流程，通过调整屈曲构件的各段长度使得总刚度很容易满足设定偏差范围，设计出的横向大吨位阻尼体系既能够为联塔结构提供较强的横向连接刚度，又能通过结构的屈曲来耗散地震能量，有效满足联塔结构桥梁对结构间大阻尼力、大弹性刚度及小位移耗能的技术要求。
Transverse large-tonnage damping system for tower-connected bridge and design method of transverse large-tonnage damping system
The invention relates to a design method of a transverse large-tonnage damping system of a linked tower bridge, which comprises the following steps: acquiring an internal force response value of a linked tower structure under the earthquake action of E1 and E2 so as to determine the vertical elastic rigidity and yield force of the transverse large-tonnage damping system; determining an axial rigidity target value and a yield force target value of a single buckling restrained brace damper according to the vertical elastic rigidity and the yield force of the transverse large-tonnage damping system; the total rigidity of the buckling restrained brace damper is determined on the basis of parameters of a buckling component in the buckling restrained brace damper, and the lengths of a core section, a transition section and a connecting section in the buckling component are adjusted, so that the total rigidity of the single buckling restrained brace damper is within a set deviation range. The method provided by the invention has a simple and feasible process, the total rigidity can easily meet a set deviation range by adjusting the length of each section of the buckling component, and the designed transverse large-tonnage damping system can provide relatively strong transverse connection rigidity for the tower connection structure, and can dissipate earthquake energy through buckling of the structure, so that the seismic energy is greatly reduced, and the energy consumption is reduced. And the technical requirements of large damping force, large elastic rigidity and small displacement energy consumption between structures of the tower connecting structure bridge are effectively met.
本申请涉及一种联塔桥梁横向大吨位阻尼体系的设计方法，包括：获取联塔结构在E1和E2地震作用下的内力响应值，以确定横向大吨位阻尼体系的竖向弹性刚度和屈服力；根据横向大吨位阻尼体系的竖向弹性刚度和屈服力确定单台屈曲约束支撑阻尼器的轴向刚度目标值和屈服力目标值；基于屈曲约束支撑阻尼器中屈曲构件的参数，确定屈曲约束支撑阻尼器的总刚度，调整屈曲构件中核心段、过渡段、连接段的长度，使得单台屈曲约束支撑阻尼器的总刚度在设定偏差范围内。本申请提供的方法具有简单易行的流程，通过调整屈曲构件的各段长度使得总刚度很容易满足设定偏差范围，设计出的横向大吨位阻尼体系既能够为联塔结构提供较强的横向连接刚度，又能通过结构的屈曲来耗散地震能量，有效满足联塔结构桥梁对结构间大阻尼力、大弹性刚度及小位移耗能的技术要求。
Transverse large-tonnage damping system for tower-connected bridge and design method of transverse large-tonnage damping system
一种联塔桥梁横向大吨位阻尼体系及其设计方法
WANG CHAO (author) / LIU PENGFEI (author) / YANG LIN (author) / LYU JIANG (author) / XIE SHIDA (author) / LI DONGCHAO (author) / SHENG NENGJUN (author) / YIN QI (author) / GENG YUEYUE (author) / JING GUOQIANG (author)
2024-04-26
Patent
Electronic Resource
Chinese
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