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    賈  強(qiáng)    范夕森
    （山東建筑工程學(xué)院  濟(jì)南 250014）

[提要]  某4層磚混結(jié)構(gòu)辦公樓需拆除層2,3部分承重墻，改造成為大空間的車(chē)間。承重墻頂部的圈梁需加固。由于層4墻體不拆除，層3梁上部荷載較大，采用了圈梁側(cè)做托梁、后拆墻的方案。層3墻拆除后，層2梁上部荷載較小，加固可采用臨時(shí)硬撐支頂，先拆墻、在梁底加大截面的方案；為支撐托梁，對(duì)構(gòu)造柱進(jìn)行了處理。
[關(guān)鍵詞]  改造  擴(kuò)大截面  臨時(shí)支撐  拆墻  加固

A four-storey mansory office building is reformed into a large space workshop by removing the second and third floor bearing wall. The girth on top of the wall is reinforced. While the fourth floor wall is reserved, the load on the third floor is too large to be beared by temporary supports. An attached new beam is added to hold the original girth. After the wall in the third floor is removed, the temporary supports have enough strength to bear the load on the second floor, so the beam on the second floor can be reinforced by enlarging the beam section area.The stiff column is also changed to hold the new beam.
Keywords:  reforming; enlarging section area;  temporary supports; removing wall; strengthening