混凝土
混凝土
혼응토
CONCRETE
2009年
7期
43-45
,共3页
有效附加应力%减饱和效应%交变应力%变形%内力
有效附加應力%減飽和效應%交變應力%變形%內力
유효부가응력%감포화효응%교변응력%변형%내력
effective subsidiary stress%denaturation effect%alternating stress%deformation%internal force
用GYH-2型单膜式压力传感器和GJL-2型钢筋计测试了大体积筏形基础的钢筋应力、基底反力,同时还监测了基础沉降,掌握了第一手动态监测数据,总结出该种基础基底压力的分布规律和基础内力的实际状态.测试结果表明:筏形基础基底反力非理想均布,钢筋受力处于交变应力状态,应力最大值不超过钢筋设计强度的22%.说明基础钢筋仍在弹性范围内工作.
用GYH-2型單膜式壓力傳感器和GJL-2型鋼觔計測試瞭大體積筏形基礎的鋼觔應力、基底反力,同時還鑑測瞭基礎沉降,掌握瞭第一手動態鑑測數據,總結齣該種基礎基底壓力的分佈規律和基礎內力的實際狀態.測試結果錶明:筏形基礎基底反力非理想均佈,鋼觔受力處于交變應力狀態,應力最大值不超過鋼觔設計彊度的22%.說明基礎鋼觔仍在彈性範圍內工作.
용GYH-2형단막식압력전감기화GJL-2형강근계측시료대체적벌형기출적강근응력、기저반력,동시환감측료기출침강,장악료제일수동태감측수거,총결출해충기출기저압력적분포규률화기출내력적실제상태.측시결과표명:벌형기출기저반력비이상균포,강근수력처우교변응력상태,응력최대치불초과강근설계강도적22%.설명기출강근잉재탄성범위내공작.
The GYH-2 membrane case manometer and GJL-2 reinforcement stressometer were used to test the remforcement stresses, superim-posed stress and settlement of large volume concrete foundation.First-hand dynamic data were thus monitored to and recorded to generalize the ac-tual distributions of the back pressure and foundation's stress.Testing results showed that superimposed stress doesn't distribute evenly on bottom of large volume concrete raft foundation;Stress of reinforcements change alternately;The maximum tensile stress occurs at the midspan of slab and the maximum value as stress is about 22% lower than allowable strength of reinforcements.The reinforcement of foundation stiU works in the range of elasticity.
