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A platform for research: civil engineering, architecture and urbanism
Hydraulic system for prestress intelligent tensioning equipment and synchronous tensioning method thereof
The invention discloses a hydraulic system for prestress intelligent tensioning equipment and a synchronous tensioning method thereof. The method sequentially comprises steps that (1) firstly, systemsetting is conducted; (2) tensioning is started, and the main control oil output quantity is adjusted according to a tensioning speed PID (Proportion Integration Differentiation) adjustment method sothat a difference value between the tensioning force of each stage and the tensioning force of the main control part is smaller than the maximum tensioning force difference value, moreover, the tensioning force and the displacement information of each jack are collected, and synchronous tensioning force adjustment is firstly carried out; 3) entering a stage from double initial stress to final tensioning ending is performed, and synchronous displacement adjustment is performed to enable the tensioning force difference between the jacks to be smaller than the maximum tensioning force deviation;4) after final tensioning and pressure maintaining are completed, the jacks slowly release the pressure and anchor steel strands, anchoring is completed, the jacks retreat; and 5) tensioning is completed. The synchronous tensioning method is advantaged in that simultaneous tensioning of the two jacks can be achieved, working efficiency is improved, a control mode is simple, control precision is high, and applicability is high.
一种预应力智能张拉设备用液压系统及其同步张拉方法，所述方法依次包括如下步骤：1）首先进行系统设置；2）开始张拉，根据张拉速度PID调节法以调节主控出油量，从而使得各阶段张拉力与主控部分张拉力差值小于最大张拉力差值；同时采集各千斤顶的张拉力及位移信息，首先进行同步张拉力调节；3）进入二倍初应力至终张结束阶段，进行同步位移调节，使得各千斤顶之间的张拉力差小于最大张拉力偏差；4）终张保压完成，千斤顶缓慢泄压，锚固钢绞线，锚固完成后，千斤顶退顶；5）结束张拉。本发明所述的同步张拉方法可以实现两个千斤顶的同时张拉，提高了工作效率，控制方式简单、控制精度高、适用性强。
Hydraulic system for prestress intelligent tensioning equipment and synchronous tensioning method thereof
The invention discloses a hydraulic system for prestress intelligent tensioning equipment and a synchronous tensioning method thereof. The method sequentially comprises steps that (1) firstly, systemsetting is conducted; (2) tensioning is started, and the main control oil output quantity is adjusted according to a tensioning speed PID (Proportion Integration Differentiation) adjustment method sothat a difference value between the tensioning force of each stage and the tensioning force of the main control part is smaller than the maximum tensioning force difference value, moreover, the tensioning force and the displacement information of each jack are collected, and synchronous tensioning force adjustment is firstly carried out; 3) entering a stage from double initial stress to final tensioning ending is performed, and synchronous displacement adjustment is performed to enable the tensioning force difference between the jacks to be smaller than the maximum tensioning force deviation;4) after final tensioning and pressure maintaining are completed, the jacks slowly release the pressure and anchor steel strands, anchoring is completed, the jacks retreat; and 5) tensioning is completed. The synchronous tensioning method is advantaged in that simultaneous tensioning of the two jacks can be achieved, working efficiency is improved, a control mode is simple, control precision is high, and applicability is high.
一种预应力智能张拉设备用液压系统及其同步张拉方法，所述方法依次包括如下步骤：1）首先进行系统设置；2）开始张拉，根据张拉速度PID调节法以调节主控出油量，从而使得各阶段张拉力与主控部分张拉力差值小于最大张拉力差值；同时采集各千斤顶的张拉力及位移信息，首先进行同步张拉力调节；3）进入二倍初应力至终张结束阶段，进行同步位移调节，使得各千斤顶之间的张拉力差小于最大张拉力偏差；4）终张保压完成，千斤顶缓慢泄压，锚固钢绞线，锚固完成后，千斤顶退顶；5）结束张拉。本发明所述的同步张拉方法可以实现两个千斤顶的同时张拉，提高了工作效率，控制方式简单、控制精度高、适用性强。
Hydraulic system for prestress intelligent tensioning equipment and synchronous tensioning method thereof
一种预应力智能张拉设备用液压系统及其同步张拉方法
LI HONGTAO (author) / SONG YOUJU (author) / YAN JINQIANG (author) / ZHANG YUEQIANG (author)
2020-05-05
Patent
Electronic Resource
Chinese
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