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Vibration reduction method of rail transit structure
A vibration reduction method of a rail transit structure comprises the following steps that firstly, a rail structure is arranged below a rail for supporting wheels, a structural plate supported by columns is arranged below the rail structure, a plurality of supporting columns are arranged between the structural plate and a structural bottom plate below the structural plate, so as to change the transmission mode of the vibration energy generated by the collision between the wheels of the vehicle and the rail from surface transmission to point transmission and reduce the vibration energy for the first time; secondly, the supporting columns are of a multi-layer cylindrical structure, multiple layers of reinforced concrete structures which are sequentially arranged in a sleeved mode are arranged in the multi-layer cylindrical structure, annular energy dissipation layers are arranged between the reinforced concrete structures, vibration energy transmitted out along the column is absorbed, and secondary vibration reduction is conducted along the transmission path of the vibration energy; and thirdly, energy consumption balls are arranged below the platform plate; to make great number of building structures along the rail transit obtain a good vibration reduction effect. The mode that a ground building is provided with a horizontal vibration isolation layer and periodical row piles are arranged on the periphery of a newly-built building can only enable individual building structures to obtain the vibration reduction effect. The mode that a shock pad is arranged below the rail transit structure is also relatively far away from a vibration source, and only vibration energy transmitted to a soil body through a structure bottom plate can be reduced. The engineering cot is low; and compared with rail vibration reduction, the one-time investment cost is low, and the maintenance and replacement cost is not needed.
一种轨道交通结构的减振方法，其包括如下步骤：步骤一：在支撑车轮的轨道下设有轨道结构，所述轨道结构的下方设置柱支撑的结构板，所述结构板和下方的结构底板之间设有多个支撑柱，由此将由车辆的车轮与轨道撞击产生的振动能量的传播方式，由面式传播变为点式传播，进行振动能量的第一次消减；步骤二：所述支撑柱为多层圆柱结构，所述多层圆柱结构内设有多层依次套设的钢筋混凝土结构，在各钢筋混凝土结构之间设有圆环状的耗能层，对顺柱传递出去的振动能量进行吸收，从而延振动能量传播途径进行第二次振动消减；步骤三：在站台板下设置耗能球；由此，本发明使轨道交通沿线大量建筑结构获得良好的减振效果。而地面建筑设置水平隔振层、新建建筑周边设置周期性排桩的方式仅能使个别建筑结构获得减振效果。轨道交通结构下方设置减震垫的方式亦离振源相对较远，仅能消减通过结构底板向土体传播的振动能量。工程造价低，相比轨道减振一次性投入费用少，且不需要养护和更换成本。
Vibration reduction method of rail transit structure
A vibration reduction method of a rail transit structure comprises the following steps that firstly, a rail structure is arranged below a rail for supporting wheels, a structural plate supported by columns is arranged below the rail structure, a plurality of supporting columns are arranged between the structural plate and a structural bottom plate below the structural plate, so as to change the transmission mode of the vibration energy generated by the collision between the wheels of the vehicle and the rail from surface transmission to point transmission and reduce the vibration energy for the first time; secondly, the supporting columns are of a multi-layer cylindrical structure, multiple layers of reinforced concrete structures which are sequentially arranged in a sleeved mode are arranged in the multi-layer cylindrical structure, annular energy dissipation layers are arranged between the reinforced concrete structures, vibration energy transmitted out along the column is absorbed, and secondary vibration reduction is conducted along the transmission path of the vibration energy; and thirdly, energy consumption balls are arranged below the platform plate; to make great number of building structures along the rail transit obtain a good vibration reduction effect. The mode that a ground building is provided with a horizontal vibration isolation layer and periodical row piles are arranged on the periphery of a newly-built building can only enable individual building structures to obtain the vibration reduction effect. The mode that a shock pad is arranged below the rail transit structure is also relatively far away from a vibration source, and only vibration energy transmitted to a soil body through a structure bottom plate can be reduced. The engineering cot is low; and compared with rail vibration reduction, the one-time investment cost is low, and the maintenance and replacement cost is not needed.
一种轨道交通结构的减振方法，其包括如下步骤：步骤一：在支撑车轮的轨道下设有轨道结构，所述轨道结构的下方设置柱支撑的结构板，所述结构板和下方的结构底板之间设有多个支撑柱，由此将由车辆的车轮与轨道撞击产生的振动能量的传播方式，由面式传播变为点式传播，进行振动能量的第一次消减；步骤二：所述支撑柱为多层圆柱结构，所述多层圆柱结构内设有多层依次套设的钢筋混凝土结构，在各钢筋混凝土结构之间设有圆环状的耗能层，对顺柱传递出去的振动能量进行吸收，从而延振动能量传播途径进行第二次振动消减；步骤三：在站台板下设置耗能球；由此，本发明使轨道交通沿线大量建筑结构获得良好的减振效果。而地面建筑设置水平隔振层、新建建筑周边设置周期性排桩的方式仅能使个别建筑结构获得减振效果。轨道交通结构下方设置减震垫的方式亦离振源相对较远，仅能消减通过结构底板向土体传播的振动能量。工程造价低，相比轨道减振一次性投入费用少，且不需要养护和更换成本。
Vibration reduction method of rail transit structure
轨道交通结构的减振方法
XU CHENGYONG (author) / XIA RUIMENG (author) / LOU HAICHENG (author) / LI XIN (author) / ZHENG JIE (author) / CHEN RUNFA (author) / LI MING (author) / FAN QIJUN (author)
2021-08-03
Patent
Electronic Resource
Chinese
IPC:
E01B
PERMANENT WAY
,
Gleisoberbau
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