本文探讨了脆性破坏岩石的强度准则。
The strength criteria of rock fragile fracture are discussed.
对岩土材料的脆性破坏过程进行正确描述是很困难的。
How to describe the brittle failure process for geomaterials is a challenging problem.
卸载速率越快，岩石脆性破坏越强，发生岩爆的可能性越大。
The brittle failures of rock are more intensive with high unloading rate, and the probability of rock burst is larger.
结果表明：在动应力作用下，两种改良土的破坏均为脆性破坏；
Research results show that the failure styles of two kinds of cement-soil under dynamic load are brittle failures.
白云岩在较高围压下表现屈服塑性，在低围压下表现脆性破坏。
Limstone reflects yielding plastic character in high confining pressure, in low confining pressure reflects brittleness character.
美国北领地震中，不少钢框架梁柱连接出现了意想不到的脆性破坏。
Many steel frames suffered from unexpected brittle fracturing of beam-to-column connections in the Northridge earthquake.
结果表明，单轴应力条件下水泥石具有明显的弹性变形及脆性破坏特征；
The following conclusions are obtained: There are sensible elastic deformation and brittle failure feature in the oilwell cement under monopodium stress conditions.
研究了诸如化学成分、热处理条件和焊接因素对压力容器脆性破坏的影响。
The influences of basic metal chemical composition, heat treatment conditions and welding parameters on the pressure vessel brittle fracture have been investigated.
研究结果表明：浆液的存在延续了煤样的变形，减少了煤样试件的脆性破坏；
The study has shown that: the coal shows much less brittle failure because the grout in it can continue the deformation of the coal sample;
当所有的金不能完全溶解在焊钩中时，就会在金与钩的界面附近发生脆性破坏。
When all the gold does not dissolve in the solder brittle failure occurs near the goldsolder interface .
当环向应变接近或超过轴向应变时，大理岩发生剧烈脆性破坏的可能性将明显提高。
The dramatic brittle failure of marble may happen more frequently if the circumferential strain approaches or exceeds the axial strain.
短柱引发结构脆性破坏，采用加箍筋办法对其加强，其抗剪承载力可满足抗震要求。
Short columns can induced brittle failure, strengthen it with additional stirrups, which shearing capacity can meet the seismic requirements.
其端部斜面焊缝结构的抗疲劳强度比对接焊缝结构高，且不会发生一次性脆性破坏；
The fatigue resistance of the scarf weld in the end of the vessel is stronger than that of the butt weld.
结果显示：改性浇铸尼龙材料拉伸屈服后能够产生很大的塑性形变，不会发生脆性破坏。
The results showed that cast nylon modified with laurolactam could produce heavy plasticity deformation without brittle destruction after the tensile yielding.
结合粘结裂纹模型，研究了结构从延性到脆性失稳的特性以及引起脆性破坏的影响因素。
Combining with the cohesive crack model, the behavior of structure in the range from ductile to brittle instability and the factors influencing the brittle failure are studied.
混凝土中掺入橡胶颗粒后，在破坏时产生较大的变形，破坏形式由脆性破坏变为延性破坏。
Due to the addition of rubber granules, the deformation of concrete will be larger in damage, and the damage form will be changed from brittle fracture to ductile fracture.
分析了不同形式节点的承载性能和延性特征，总结了不同节点构造对节点脆性破坏的敏感性。
The moment resistance and ductile behavior of these specimens are analyzed, and the sensitivity to fracture failures is assessed.
水力劈裂过程只有弹性变形和脆性破坏，不存在裂隙压裂过程中的第三种变形机理—压缩破坏。
There are only elastic deformation and brittle deformation on the process of hydraulic fracturing, and not compaction.
不论刀具形状如何，破坏过程大体分为三个阶段：脆性破坏阶段、塑性破坏阶段、断裂破坏阶段。
No matter what the shape of cutting tools is, failure procedures are simply divided into three stages: brittle failure, plastic failure, and fracture.
破坏发生时，钢板的受拉强度未得到充分利用，属脆性破坏，必须采取合理的锚固措施予以克服。
When the failure taking place, the strength of steel plates has not been fully used, it belongs to brittle failure and must be overcome with reasonably measure.
研究目的：钢轨钢材在低温下力学性能变差，容易发生脆性破坏，这直接威胁着铁路运输的安全。
Research purposes: at a low temperature, the mechanical properties of rail steel get worse and brittle (failures) can happen more easily.
试验研究表明，拱式转换层结构能有效地满足大跨度要求，并具备较好的延性性能，能避免脆性破坏；
The result indicates that the arch transfer floor can satisfy the requirement of large span effectively, possess relatively good ductility and avoid brittle destruction.
上覆土层存在，可以消耗一部分基岩位错释放出的能量，避免管线遭到突发力的作用而导致的脆性破坏。
Some conclusions are obtained: a Overlaying soil can consume some energy from fault bedrock rupture, and decrease pipeline damage.
两者相比，高温后砂岩的峰值强度、弹性模量和变形模量有所提高，两者受温度影响均以脆性破坏为主。
Compared with both of them, the peak-value strength, elastic modulus, and deformation modulus of sandstone after high temperature increase by a little and they are all brittle fractures.
经实测数据与所建模型对比验证，延性破坏、脆性破坏模式本构模型精度较高，可为岩石损伤评估提供依据。
Proved by the test data, the precision of constitutive model with brittle, ductile failure is higher, which can provide accurately the basis for rock damage assessment.
在这些现场和实验室研究结果的基础上，作者提出了蠕变扩容理论(1981 ~ 1983)和简化的脆性破坏理论。
On the basis of these field and experimental results he suggests the creep dilatancy theory (1981, 1983) and the simplified brittle failure theory.
含高应力集中钢结构构件的厚度是影响其发生脆性破坏的一个重要因素，它的影响是和其应力集中区的复杂应力状态相联系的。
The thickness of steel elements with high stress concentration is a very important factor for brittle fracture. Its effects depend on the complex stress state for the stress concentration area.
实验结果表明：[0]16层板破坏时表现出典型的不规则脆性破坏，纤维的损伤具有初始门槛值，而纤维的强化存在应变率门槛效应。
The experimental results show that disheveled catastrophic brittle failure is observed for the [0]16 specimens tested at quasi-static strain rates.
通过分析试验结果和有限元模拟，得出以下结论：①普通嵌贴钢板的极限抗剪承载力较高，破坏形态为混凝土拉剪破坏，属于脆性破坏。
The parameters of impact elements are analyzed to find out their influential regulation of the shear properties of the concrete components which have near-surface mounted the steel plate.
轴压比是影响其受力性能的主要因素，当轴压比不同时可能会发生不同的破坏，为了避免发生脆性破坏，在设计时就会出现柱截面很大的情况，在高层结构尤甚。
Axial compression ratio is the mainly factor that can impress capability of the steel reinforced column. When the axial compression ratio has changes different destruction be can happen.
应用推荐