港口水工建筑物结构设计应考虑（）、短暂状况、偶然状况三种设计状况，并按承载能力极限状态和正常使用极限状态两种状态进行计算和验算

Fred is a member of Glad Ltd, a small publishing company, holding 100 of its 500 shares, the other 400 shares are held by four other members.It has recently become apparent that Fred has set up a rival business to Glad Ltd and the other members have decided that he should be expelled from the company.To that end they propose to alter the articles of association to include a new power to ‘require any member to transfer their shares for fair value to the other members upon the passing of a resolution so to do’.Required:Advise the parties concerned whether or not the proposed change to the articles is legally enforceable and whether or not it can be used to force Fred to sell his shares. (10 marks)