On the basis of relevant theory of hyperstatic structure in structural mechanism, the paper discusses the mechanism of secondary interior force caused by prestressing and its effect on structures.
基于结构力学中超静定结构的相关理论，讨论了预应力次内力产生的机理及其对结构的影响，进而提出合理利用次内力的设计思想。
By theoretical analysis, the considerations were put forward about the check with symmetry solving hyperstatic structure, avoiding internal force diagram check errors caused by inertial thinking.
通过理论分析，提出利用对称性求解超静定结构时应注意的问题，避免因惯性思维造成最后内力图校核出现错。
By theoretical analysis, the considerations were put forward about the check with symmetry solving hyperstatic structure, avoiding internal force diagram check errors caused by inertial thinking.
通过理论分析，提出利用对称性求解超静定结构时应注意的问题，避免因惯性思维造成最后内力图校核出现错。
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