According to the internship or project you participated in, it is possible to make an analysis with information to make your thesis content. Of course, you can also make a proposition, such as what to do when buildings collapse in Shanghai, that is, non-high-rise buildings built on soft soil foundation, when the bedrock is deep:

Adequacy of survey data-rock depth, nature and distribution of soft soil, stability and influence of existing structures around.

Choose the foundation considerations-the type and depth of pile foundation, where we can study the factors resisting horizontal instability, and so on.

Foundation treatment-soft soil treatment, surrounding influence, reinforcement, etc.

Construction program design-temporary and permanent horizontal support, excavation program, observation layout, etc.

Long-term observation-at least for now.

You can take the stability analysis in the construction procedure as a topic, and you can take all the above points into account. If the analysis is sufficient, it will be a very good paper.