【摘要】：與國外相比,國內(nèi)錨桿標準中的技術(shù)尚有改進空間。借鑒歐美日最新標準,建議:增加一種錨桿結(jié)構(gòu)劃分方法,即按內(nèi)部結(jié)構(gòu)劃分為黏結(jié)段、非黏結(jié)段及張拉段;基本試驗可調(diào)整細分為基本調(diào)查試驗及適應(yīng)試驗,并將前者定性為探究性試驗;可采用表觀自由長度替代彈性變形以作為錨桿抗拔試驗變形評價指標;研究及增加在錨固段與自由段分界處設(shè)置止?jié){塞的技術(shù)要求;明確荷載分散型錨桿的張拉只應(yīng)采用荷載控制方法;研究及增加對錨筋駐留荷載的提離檢查;錨桿鎖定荷載提高至不小于0.9倍設(shè)計承載力。
[Abstract]:Compared with foreign countries, there is still room for improvement in the technology of domestic bolt standard. Based on the latest standards in Europe, America and Japan, it is suggested that an anchor rod structure division method should be added, that is, according to the internal structure, it can be divided into bonding section, non-bonded section and tension section, the basic test can be adjusted and subdivided into basic investigation test and adaptation test, and the former can be characterized as inquiry test, and the apparent free length can be used instead of elastic deformation as the evaluation index of anchor rod pullout test deformation, and the basic test can be adjusted and subdivided into basic investigation test and adaptation test, and the former can be characterized as inquiry test. The technical requirements of setting up slurry stopper at the boundary between anchoring section and free section are studied and increased; it is clear that the tension of load dispersed anchor rod should only adopt load control method; the lifting inspection of anchor bar resident load should be studied and increased; and the locking load of anchor rod should be increased to not less than 0.9 times the design bearing capacity.
【作者單位】： 深圳市工勘巖土集團有限公司;中國京冶工程技術(shù)有限公司;蘇州市能工基礎(chǔ)工程有限責任公司;
【分類號】：TU476

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