求翻译：为探明其裂缝产生的原因，并找出可供实用的防止裂缝产生的方法，笔者对多座采用二次浇筑法的中小跨度连续箱梁桥在施工阶段出现的裂缝进行了实地检测，并基于ANSYS进行了研究。是什么意思？

For determining the crack reason and find available for practical ways to prevent cracks, I applied to several secondary placement method of medium and small span continuous box girder bridge in construction stage for field detection of cracks and conducted a study based on ANSYS.