Expansion joint: to meet the deformation of foundation, expansion and construction requirements play, prevent play a change in temperature in transverse crack produces.
伸缩缝：为适应地基变形，管身伸缩及施工要求，防止管身在温度变化时产生横向裂缝。
Transverse displacement of bridge abutment and fill slide of approach happened during the construction period of Shanghai Huqingping Freeway.
上海沪青平高速公路施工期间，发生桥台横向位移和引道填土滑坡的情况。
Its most outstanding characteristic is to transform transverse bracing welding from air to ground, thus securing construction and ensuring assembly quality.
其最大特点是将空中焊接横联作业转化为地面作业，能确保施工安全和拱肋拼装质量。
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