Braced Steel Frame System: Chifukwa Chiyani Nyumba Zokwera Zimakhala Zolimba?

Chifukwa cha kusowa kwa malo amakono komanso mavuto obwera chifukwa cha kuchuluka kwa anthu, ntchito yomanga molunjika yakhala njira yosapeŵeka m'mamangidwe amakono. Nyumba zosanja zamakono zimakwera m’mwamba n’kuima motalikirapo. Kodi nchiyani chimene chimawapangitsa kukhala okhazikika polimbana ndi mphepo yamkuntho yamphamvu mu troposphere ndi kuwatheketsa iwo kupirira zivomezi bwinobwino? Kuti tiyankhe funso ili, tiyeni tiyang'ane mozama za bracedchitsulo chimango dongosolo.

Zomangamanga zoyera zachikhalidwe zimakhala ndi masanjidwe apansi osinthika komanso kugwiritsa ntchito malo apamwamba. Komabe, kutalika kwa nyumbayo kukadutsa malire ena, kusowa kwawo kwa kusakhazikika kwapang'onopang'ono kumawonekera. Pali njira ziwiri zazikulu zothetsera vutoli: kukulitsa magawo a matabwa ndi mizati, kapena kukhazikitsa makina omangira. Yoyamba idzapangitsa kuti zitsulo ziwonjezeke kwambiri, pamene zotsirizirazo zimadzitamandira kuti ndizokwera mtengo kwambiri. Chifukwa chake, makina opangira zitsulo zolimba ndiye chisankho chabwino kwambiri panyumba zazitali.

Lingaliro lofunikira la kachitidwe kachitsulo kachitsulo kamakhala mu dongosolo loyenera la mamembala omangirira kuti apange makina onyamula katundu wogwirizana: chimango chachitsulo chimanyamula katundu woyima pomwe zingwe zimakana mphamvu zopingasa. Nyumba yamaofesi ku Xiamen imatengera makina omangira zitsulo. Zingwe zotsekera zonyamula katundu (BRBs) zimayikidwa m'munsi mwa nyumbayo, zomwe zimathandizira bwino kwambiri ma ductility azinthu zachitsulo ndikuwongolera kwambiri magwiridwe antchito a zivomezi.

Pali mitundu itatu yoyambirira ya bracedzitsulo chimango machitidwe. The Concentrically Braced Frame (CBF) ndiye masinthidwe apamwamba kwambiri a bracing, omwe chikhalidwe chake chachikulu ndikuti nkhwangwa zapakati za mamembala omangika zimadutsa pakati pa zolumikizira zamitengo. Imakhala ndi kuuma kwakukulu ndipo imatha kuwongolera bwino kusamuka kopingasa. Kusiyanitsa kwa Eccentrically Braced Frame (EBF) kuchokera ku CBF kwagona pakumangika kwa nkhwangwa zake zomangira, zomwe zimapangitsa kuti ziphatikize kuuma kwakukulu kwa ma braces okhazikika komanso kuyenera kwa mafelemu oyera. Mafelemu amphamvu otaya mphamvu amadalira kutaya mphamvu ndi zida zonyowetsa kuti apange njira yabwino yolimbana ndi mphamvu.

Mu uinjiniya wothandiza, Buckling-Restrained Brace (BRB) ndiye yankho lomwe lilipo komanso mtundu wokwezedwa wa mafelemu omangidwa mokhazikika. Imathetsa vuto la kulephera kwa zingwe zomangirira zachikhalidwe pansi pa kupanikizidwa ndi kupindika. Wopangidwa ndi mbale yachitsulo yapakati, chubu chotchingira chakunja ndi zinthu zodzaza zosamangika, ma BRB amatulutsa zolemetsa popanda kugundana kuti awononge mphamvu, kupeza mphamvu yofananira komanso yopingasa komanso kuchulukira kwamphamvu.

Kupatula apo, CBF imaphatikizanso Diagonal Bracing, Chevron Bracing (Inverted V-Bracing), V-Bracing, X-Bracing (Cross Bracing) ndi K-Bracing. EBF makamaka imakhala ndi D-mtundu (mtundu wa chipata), mtundu wa K, mtundu wa V ndi mtundu wa Y.

Mawonekedwe enieni a bracedzitsulo chimango machitidweidzasankhidwa kutengera zomwe zimafunikira pa seismic ndi kutalika kwa nyumbayo. Nthawi zambiri, zingwe zachikhalidwe zokhazikika zimakhala zotsika mtengo komanso zolimba kwambiri, zingwe za eccentric zimapereka kukhazikika bwino komanso kutha kwamphamvu kwamphamvu, ndipo zingwe zotchingira zolimba zimapereka magwiridwe antchito apamwamba. Makina opangira zitsulo zolimba amathandizira nyumba zokwera kwambiri komanso zapamwamba kwambiri kuti zisagonjetse mphepo zamphamvu ndi zivomezi, komanso zimapereka njira zodalirika zopangira chitukuko chakumatauni. Pokhala ndi zaka 21 zachidziwitso chochuluka, EHSS ndi katswiri wopanga zinthu zokhazikika pakupanga ndi kukhazikitsa zigawo zazitsulo. Khalani tcheru ndi EHSS kuti mudziwe zambiri zaukadaulo zamapangidwe azitsulo.