Campus recruitment passed the physical examination of 10, and was not asked to sign the tripartite agreement. Is it normal?

Normal. The entrance examination is just a process of the internal personnel management system of the enterprise you are applying for. The entrance examination has been done, which shows that you have got the job opportunity. When to sign a tripartite agreement depends on the internal management system of the employer. Some units sign the formal tripartite agreement only after the probation period (1-3 months), and some units sign the tripartite agreement with you only after reading your physical examination and evaluation.