【摘要】：工程實(shí)踐中需要面對(duì)的巖質(zhì)邊坡數(shù)量龐大，邊坡一旦失穩(wěn)，將引起嚴(yán)重后果。邊坡規(guī)范提出的巖質(zhì)邊坡錨桿受力計(jì)算模型為均勻分布或者接近于均勻分布，，這與實(shí)際檢測(cè)和模擬結(jié)果有很大的出入。有必要根據(jù)邊坡和錨桿協(xié)調(diào)變形機(jī)理提出新的錨桿受力計(jì)算模型。 在巖質(zhì)邊坡巖體巖性相同，不存在外傾結(jié)構(gòu)面時(shí)，將坡體看成各向同性彈性體，運(yùn)用彈性力學(xué)，求解邊坡在錨桿軸力、堆載和重力作用下位移解析解。在位移解析解的基礎(chǔ)上，本文深入剖析邊坡和錨桿變形協(xié)調(diào)機(jī)理，考慮邊坡支擋的經(jīng)濟(jì)性，提出了新的巖質(zhì)邊坡錨桿軸力計(jì)算模型：錨桿的軸力和邊坡的變形相關(guān)，呈現(xiàn)上大下小，沿著邊坡高度接近二次曲線分布。并通過(guò)UDEC程序進(jìn)行了數(shù)值模擬分析，驗(yàn)證了計(jì)算模型正確性。本文最后結(jié)合具體的工程實(shí)例，采用了規(guī)范方法和本文研究的巖質(zhì)邊坡錨桿軸力受力計(jì)算模型方法分別設(shè)計(jì)并進(jìn)行對(duì)比，說(shuō)明其異同。
[Abstract]:The large quantity of rock slope in engineering practice will cause serious consequences once the slope is unstable. The stress calculation model of rock slope bolt proposed by the slope code is uniform distribution or close to uniform distribution, which is very different from the actual test and simulation results. It is necessary to put forward a new stress calculation model based on the deformation mechanism of slope and bolt. When the rock mass lithology of rock slope is the same and there is no extroverted structural plane, the slope body is regarded as an isotropic elastic body, and the analytical solution of slope displacement under the action of anchor rod axial force, heaped load and gravity is solved by means of elastic mechanics. On the basis of the analytical solution of displacement, this paper deeply analyzes the coordination mechanism of deformation of slope and anchor rod, considering the economy of slope retaining, puts forward a new calculation model of axial force of anchor rod in rock slope: the axial force of anchor rod is related to the deformation of slope. The distribution is similar to the quadratic curve along the slope height. The correctness of the calculation model is verified by numerical simulation and analysis by UDEC program. In the end of this paper, combined with concrete engineering examples, the author designs and compares the calculation model of axial force of rock slope anchor with the method of code and the method of calculation of axial force of rock slope studied in this paper, and explains its similarities and differences.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU45

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