The top wall crack phenomenon in brick and concrete structure is analy zed in brief, especially about the stress when the crack is split, and the reaso n of crack producing is put forward.

• 对砖混结构顶层墙体裂缝现象作了简要分析 ,特别分析了裂缝开裂时的受力状况 ,提出了裂缝产生的原因。