错层结构设计遇到的问题

做了一个4层的幼儿园结构设计，每层的高度是3.6M。在楼梯平台处（1.8M）都设置了错层房间作为厕所。出图后，甲方要求把一层的层高由3.6M提高到5M，并且不改变柱子的截面，原来的柱子的截面角柱500X500，其他400X500。改了一层层高的结构模型后，发现了问题。周期和位移过了，但是在第二层的刚度验算不过，出现了薄弱层。如下：
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Floor No. 2 Tower No. 1
Xstif= 13.1397(m) Ystif= 7.2227(m) Alf = 0.0000(Degree)
Xmass= 13.5144(m) Ymass= 9.8551(m) Gmass= 84.9393(t)
Eex = 0.0335 Eey = 0.2625
Ratx = 0.3829 Raty = 0.3845
Ratx1= 1.7320 Raty1= 1.5112 薄弱层地震剪力放大系数= 1.00
RJX = 3.8205E+05(kN/m) RJY = 4.2998E+05(kN/m) RJZ = 0.0000E+00(kN/m)
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Floor No. 3 Tower No. 1
Xstif= 13.1411(m) Ystif= 7.2551(m) Alf = 0.0000(Degree)
Xmass= 13.0780(m) Ymass= 6.4058(m) Gmass= 415.6856(t)
Eex = 0.0056 Eey = 0.0850
Ratx = 0.3939 Raty = 0.4482
Ratx1= 0.5513 Raty1= 0.5499 薄弱层地震剪力放大系数= 1.15
RJX = 1.5048E+05(kN/m) RJY = 1.9273E+05(kN/m) RJZ = 0.0000E+00(kN/m)
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Floor No. 4 Tower No. 1
Xstif= 13.1397(m) Ystif= 7.2227(m) Alf = 0.0000(Degree)
Xmass= 13.5144(m) Ymass= 9.8551(m) Gmass= 84.9393(t)
Eex = 0.0335 Eey = 0.2625
Ratx = 2.1736 Raty = 2.1228
Ratx1= 1.1567 Raty1= 1.0905 薄弱层地震剪力放大系数= 1.00
RJX = 3.2709E+05(kN/m) RJY = 4.0913E+05(kN/m) RJZ = 0.0000E+00(kN/m)
疑问中这个结构可以出图么，有什么办法解决。5M高的梁会不会出现强梁弱柱，强弯弱剪的情况？