将采场顶板简化为岩梁模型，岩梁的最大拉应力及其极限跨距是采矿工程涉及到的两个重要参数。
The roof in working areas is simplified as rock beam, the maximum tensile stress and limited span of rock beam are important in mining engineering.
将顶板视为中点有支承的弹性固结梁，将煤柱视为支座，形成了顶板-煤柱系统。
The roof of cavern is regarded as an elastic beam with support at the midpoint and the coal pillars are regarded as bearings so as to establishing a cavern roof-coal pillar system.
研究目的：研究顶板横向预应力钢束对箱梁横向计算结果的影响，给箱梁结构设计提供借鉴和帮助。
Research purposes: This paper analyzes the effect of the lateral prestressing tendon in top deck on the lateral calculation result of box beam.
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