Main form of structural default is found in semi-rigid pavement with unbound aggregate upper base through contrasting. And it suggests control index of structural design.

通过对比分析，结合具有级配碎石基层半刚性底基层沥青路面主要破坏类型的分析，提出结构设计的控制指标。

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After unbound aggregate being settled in the semi-rigid pavement, there are great changes in structural stress distribution and form of structural default.

半刚性沥青道路在加设级配碎石夹层后结构的受力情况发生巨大的变化。

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After unbound aggregate being settled in the semi-rigid pavement, there are great changes in structural stress distribution and form of structural default.

半刚性沥青道路在加设级配碎石夹层后结构的受力情况发生巨大的变化。

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