20m预应力混凝土空心板裸梁静载测试分析研究

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中图分类号：TQ178；U446文献标志码：A

文章编号：1001-5922（2025）12-0099-05

Analysisand research onstaticload test of 20m prestressedconcrete hollowslab barebeam

PAN Tao，GENG Guofeng，YUAN Shengtao，CHEN Jing，NIE Liangpeng，LI Yunxue （Yunnan Tongqu Engineering Testing Co.，Ltd.，Kunming 65OO41，China）

Abstract：Inthis paper，theconstruction qualityand stresstateof the bare beam ina beam fieldarestudied bythe method of single beamstatic load test.Thecontrol moment valueiscalculated according tothe strain increment value at the botomofthe bare beamand the inertia moment of the bare beam section.It isanalyzed whether the strain and deflection of the bare beam meet the specification and design requirements under various working conditions.It is concluded that the measured values of each measuring point show a linear increase trend.The measured values at the bottom of the beam body show good symmetry and the measured values are lessthan the theoretical values.The strain values onboth sides of the beam web show a god linear distribution along the beam height.A static load test method basedonthe stress increment method todetermine thecontrolload is proposed.Finally，the accuracyof the control bending moment value is determined by the static load verification stress increment method.

Key Words：static load test;bare beam;bending moment;stress increment; linear distribution

在我国现役桥梁中，混凝土简支梁桥作为当今一种常用的桥梁结构形式，其优点是构造简单、受力明确、结构安全、预制施工方便等。（剩余4982字）