Ixesha lokuqala lovavanyo lwesiseko semfumba kufuneka lihlangabezane nezi meko zilandelayo:
(1) Amandla ekhonkrithi emfumba evavanyiweyo akufanele abe ngaphantsi kwe-70% yamandla oyilo kwaye akufanele abe ngaphantsi kwe-15MPa, usebenzisa indlela yoxinzelelo kunye nendlela yokuhanjiswa kwe-acoustic yokuvavanya;
(2) Ukusebenzisa indlela yokomba engundoqo yokuvavanya, iminyaka yekhonkrithi yemfumba evavanyiweyo kufuneka ifikelele kwiintsuku ezingama-28, okanye amandla ebhloko yovavanyo ephilisiwe phantsi kweemeko ezifanayo kufuneka ahlangabezane neemfuno zamandla oyilo;
(3) Ixesha lokuphumla phambi kovavanyo lwesanti yokuthwala ngokubanzi: isiseko sesanti asiyi kuba ngaphantsi kweentsuku ezisi-7, isiseko sentlenga asiyi kuba ngaphantsi kweentsuku ezili-10, umhlaba odityanisiweyo ongaxutywanga awusayi kuba ngaphantsi kweentsuku ezili-15, kwaye umhlaba oxutyiweyo obambeneyo awusayi kuba. ngaphantsi kweentsuku ezingama-25.
Imfumba yokugcina udaka kufuneka yandise ixesha lokuphumla.
Iikhrayitheriya zokukhetha iimfumba ezihloliweyo zovavanyo lokwamkelwa:
(1) Iimfumba ezinomgangatho wokwakha othandabuzekayo;
(2) Iimfumba ezineemeko ezingaqhelekanga zesiseko sendawo;
(3) Khetha ezinye iimfumba zeClass III zokuthwala ukwamkelwa komthamo;
(4) Iqela loyilo liqwalasela iimfumba ezibalulekileyo;
(5) Iimfumba ezineendlela ezahlukeneyo zokwakha;
(6) Kucetyiswa ukuba ukhethe ngokufanayo kwaye ngokungaqhelekanga ngokwemigaqo.
Xa uqhuba uvavanyo lokwamkelwa, kuyacetyiswa ukuba uqale uqhube uvavanyo lwemfezeko yemfumba, kulandele uvavanyo lomthamo.
Uvavanyo lwengqibelelo yomzimba wemfumba kufuneka lwenziwe emva kokugrunjwa komgodi wesiseko.
Ingqibelelo yemfumba yemfumba ihlelwa kwiindidi ezine: Iimfumba zeClass I, iimfumba zeClass II, iimfumba zeClass III, kunye neClass IV.
Umzimba wengqumba wodidi lwe-I ulungile;
Iimfumba zeClass II zineziphene ezincinci kumzimba wemfumba, ongayi kuchaphazela umthamo oqhelekileyo wokuthwala wesakhiwo semfumba;
Kukho iziphene ezicacileyo kwimfumba yemfumba yeemfumba zeClass III, ezinempembelelo kwisakhiwo sokuthwala umthamo womzimba wemfumba;
Kukho iziphene ezinzulu kwimfumba yemfumba yodidi lwe-IV.
Ixabiso leempawu zomthamo othe nkqo wokunyanzeliswa kwengqumba enye kufuneka ithathwe njenge-50% yowona mthamo uphezulu wokunyanzeliswa othe nkqo wengqumba enye.
Ixabiso leempawu zomthamo othe nkqo wokutsalwa ngaphandle kwengqumba enye kufuneka ithathwe njenge-50% yowona mthamo uphakamileyo wokutsalela ngaphandle wengqumba enye.
Ukumiselwa kwexabiso leempawu zomthamo wokuthwala othe tye wemfumba enye: okokuqala, xa umzimba wemfumba ungavumelekanga ukuba uqhekeke okanye umyinge wokuqiniswa kwe-cast-in-place body yemfumba ingaphantsi kwe-0.65%, amaxesha angama-0.75 othe tye. kuya kuthathwa umthwalo onzima;
Okwesibini, kwiimfumba zekhonkrithi eziqinisiweyo eziqinisiweyo, iimfumba zentsimbi, kunye neemfumba ze-cast-in-place ezinomlinganiselo wokuqinisa ongekho ngaphantsi kwe-0.65%, umthwalo ohambelana nokufuduka okuthe tye kwi-design pile top yokuphakama kuya kuthathwa njenge-0.75 amaxesha (othe tye). ixabiso lokufuduswa: 6mm kwizakhiwo ezinovakalelo lokufuduswa okuthe tye, 10mm kwizakhiwo ezingenaluvelwano ukufuduswa okuthe tye, ukuhlangabezana neemfuno zokuchasa ukuqhekeka kwemfumba yomzimba).
Xa usebenzisa indlela yokomba engundoqo, inani kunye neemfuno zendawo kwimfumba nganye ehloliweyo zimi ngolu hlobo lulandelayo: iimfumba ezinobubanzi obungaphantsi kwe-1.2m zinokuba nemingxuma eyi-1-2;
Ingqumba enobubanzi obuyi-1.2-1.6m kufuneka ibe nemingxunya emi-2;
Iimfumba ezinobubanzi obungaphezulu kwe-1.6m kufuneka zibe nemingxuma emithathu;
Indawo yokugaya kufuneka ilungelelaniswe kwaye ilungelelaniswe ngokulinganayo phakathi koluhlu (0.15 ~ 0.25) D ukusuka kumbindi wemfumba.
Ixesha lokuposa: Nov-29-2024