Monitoring of Concrete Hydration Heat Effect on Rebar Stress Based on FBG Sensors

方海东; 宋占璞; 施斌

doi:10.13409/j.cnki.jdpme.2016.03.027

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Monitoring of Concrete Hydration Heat Effect on Rebar Stress Based on FBG Sensors

更新时间：2025-12-11

- Monitoring of Concrete Hydration Heat Effect on Rebar Stress Based on FBG Sensors
- Vol. 36, Issue 3, Pages: 499-504(2016)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2016.03.027
  CLC： 641.5
- Published：2016
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[1]方海东,宋占璞,施斌.混凝土水化热对钢筋应力影响的FBG监测研究[J].防灾减灾工程学报,2016,36(03):499-504.

方海东, 宋占璞, 施斌. Monitoring of Concrete Hydration Heat Effect on Rebar Stress Based on FBG Sensors[J]. 2016, 36(3): 499-504.
[1]方海东,宋占璞,施斌.混凝土水化热对钢筋应力影响的FBG监测研究[J].防灾减灾工程学报,2016,36(03):499-504. DOI： 10.13409/j.cnki.jdpme.2016.03.027.

方海东, 宋占璞, 施斌. Monitoring of Concrete Hydration Heat Effect on Rebar Stress Based on FBG Sensors[J]. 2016, 36(3): 499-504. DOI： 10.13409/j.cnki.jdpme.2016.03.027.

摘要

以江苏省海安船闸项目为工程背景

运用布拉格光纤光栅（FBG）应变感测技术

对船闸闸首底板钢筋结构在施工过程中的应力状态进行了监测;运用布拉格光纤光栅温度感测技术对船闸闸首底板结构的温度变化进行监测

并由此对钢筋应变监测结果进行了温度补偿

分析了闸首底板钢筋应力的变化规律。结果表明:船闸闸首底板钢筋混凝土结构中钢筋应变过程与混凝土水化热温度释放规律正相关

其应力状态主要受混凝土水化热释放引起的温度应力影响

钢筋轴向呈拉应变分布。该研究成果验证了基于FBG光栅传感技术在船闸等大型水工结构施工监测中的可行性

并对光纤传感技术的应用研发和大型船闸水工结构的设计参考及施工工艺的改进具有重要意义。

Abstract

In this paper

a measurement is carried out for the construction of ship lock structure by using Fiber Bragg Grating（FBG）.The rebar strain changes of lock head structure of the ship lock during construction are also measured by FBG.Combining with the monitoring data

the stress/strain status changes in the interior of the lock head floor are comprehensively analyzed under the double actions of concrete hydration heat release and upper loading.The feasibility is validated for health monitoring on large hydraulic structure such as ship lock by using the optical fiber sensing technology.The research results are of great significance for design

construction and maintenance of the large hydraulic structure

and show the wide applications of the optical fiber sensing technologies in infrastructural engineering health monitoring.

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references

大体积混凝土水化热温度变化光纤监测技术研究 [J]. 宋占璞,张丹,方海东,施斌,费冰. 工程地质学报 . 2014(02)

地下连续墙中水化热对钢筋应力的影响研究 [J]. 汤永净,王丽平. 工业建筑 . 2006(S1)

分布式光纤传感监测三峡大坝混凝土温度场试验研究 [J]. 蔡德所,戴会超,蔡顺德,何薪基. 水利学报 . 2003(05)

混凝土水化热瞬态温度场数值计算过程中的水化放热规律及水化速率问题 [J]. 李东,潘育耕. 西安建筑科技大学学报(自然科学版) . 1999(03)

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