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发明公开
CN104880369A 一种损伤预应力混凝土受弯构件消压弯矩试验方法 无效 - 驳回

一种损伤预应力混凝土受弯构件消压弯矩试验方法
摘要：
本发明属于桥梁结构工程技术领域，具体涉及到一种损伤预应力混凝土受弯构件消压弯矩试验方法。该方法所采用的损伤预应力混凝土受弯构件消压弯矩试验系统包括桥梁、竖向荷载施加装置、表面应变计和数据采集仪，所述竖向荷载施加装置设置在桥梁的待检测开裂截面上；所述表面应变计安装在桥梁待检测开裂截面受拉区凿除钢筋保护层混凝土的外缘钢筋表面；所述数据采集仪通过导线连接在表面应变计上。与现有技术相比，本发明所述的损伤预应力混凝土受弯构件消压弯矩试验方法操作简单、结果准确可靠、易于被工程技术人员掌握，可适用于开裂的预应力混凝土梁桥截面消压弯矩检测评定。
摘要（英）：

The invention belongs to the technical field of bridge structural engineering, and in particular relates to a damaged prestressed concrete flexural member decompression moment test method. A damaged prestressed concrete flexural member decompression moment test system adopted by the method comprises a bridge, a vertical load applying device, a surface strain gauge and a data acquisition instrument, wherein the vertical load applying device is arranged on a to-be-detected cracking section of the bridge; the surface strain gauge is installed on the surface of outer edge reinforcement without reinforcement cover concrete at a tensile area of the to-be-detected cracking section of the bridge; the data acquiring instrument is connected with the surface strain gauge through a conductor. Compared with the prior art, the damaged prestressed concrete flexural member decompression moment test method is simple to operate, accurate and reliable in result, easily mastered by engineering technicians, and is suitable for detecting and evaluating the cracked prestressed concrete flexural member decompression moment.

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