摘要
抗浮锚杆是一项竖向锚固技术,可用于解决地下工程的抗浮问题,但抗浮锚杆的设计和施工还没有现行的规范可循。针对大连-滨海大型地下工程的实际,对工程抗浮锚杆进行了试验研究,通过锚杆的破坏性试验,测试了锚杆在岩土中剪应力的分布规律,得出了抗浮锚杆的抗拔力,为抗浮工程的设计提供了依据。研究表明,注浆体与岩土体间的剪应力沿锚杆长度不是均匀分布的,在孔口附近最大,从孔口沿锚杆长度逐渐衰减。工程实践证明,抗浮锚杆用于解决大型地下工程抗浮问题是比较经济、合理的方法。
Antifloating anchors can be used to solve the antifloating problem of large substructure, but there is no available code to be abided by in design and construction of antifloating anchors. The test and research on antifloating anchors is carried out based on the large substructure in coastal region. The distribution of shear stress between softrock and mortar are obtained through the test. The test shows that the shear stress distribution is not uniform and the shear stress attenuates along the length of anchors. From the orifice to holebottom, the pullout resistances of antifloating anchors are also obtained according to the destructive test, which provide the basis for the design of antifloating engineering. The practical project shows that it is very economical and reasonable that anchors are used to solve the antifloating problem of large substructure.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2002年第6期769-771,共3页
Chinese Journal of Geotechnical Engineering
