Muhimman Gaisuwa na Kwalba na Zuma Tsakiyar Maza
Foundation na bincike da ke da muhimmanci a cikin tattaunawa da na gaskiya ta hanyar tasirin aiki, domin ya ba yawan aiki na IEE-Business zuwa duniya. Babu bincike mai foundation mai lafiya da kuma mai tattalin arziki zai iya tashin ayyukansa da ake fara. A yi foundation na binciken a wurare masu nuna don suka daidaita da wurin da ke da ita.
Idan akwai abubuwan da ake bukata don a yi foundation na binciken na musamman ko kuma babban yawan ruwa, ake iya bayar da pile foundation.
Muhimmiyar Yawanci a Foundation
Foundation na binciken suna da yawan yawanci uku. Wadannan su ne:
Yawan kudin ko karamin.
Yawan kasa ko karamin.
Yawan kadan ko karamin a kafin kudu da kuma tsakiyar kudu.
Makaranta ko karamin foundation suna da yawan 10% fiye da yawan tower da ke da ita.
Base slab na foundation ya zama don yawan momen da ke fara saboda eccentricity na yawancin.
Yawan cement na footing da ke a kan yawan duniya da kuma yawan cement na footing da ke a kan yawan sama da kuma yawan steel parts da ke fito za su iya hasashe; zai yin yawan kudin.
Parametoci na wurin Don a yi foundation, an bukata parametoci masu nuna.
Limit bearing capacity na wurin.
Density na wurin.
Angle of earth frustum.
Wadannan muhimmanci a cikin wurin test report.
Tattaunawa na Tattalin Arziki na Foundation na Binciken na Transmission Tower
Idan akwai tattaunawa na strength, tattaunawa na tattalin arziki na foundation ya fara don tabbatar da abin da ke iya faruwa saboda over turning, uprooting of stubs, sliding da kuma tilting na foundation. Wadannan primary type na soil resistance za su iya taimaka don taimaka da yawan yawancin da ke fara a footing a duniya.
Resistance Against Uplift of Transmission Tower Foundation
Yawan kasa za su iya taimaka don yawan earth a inverted frustum of a pyramid of earth whose sides make an angle equal to the angle of report of the earth with the vertical in average soil. Volume na earth computation za su iya haɗa da drawing (Fig.3) Yawan cement embedded in earth and that above the ground level za su iya taimaka don taimaka da yawan kasa. Idan akwai overlap between two adjoining legs, earth frustum za su iya haɗa da vertical plane passing through the center line of the tower base. Over load factor (OLF) of 10% (Ten percent) za su iya haɗa da design load i.e. OLF = 1.10 for suspension tower and 1.15 for angle including dead end and anchor tower. Amma, for special tower OLF shall be 1.20.
Resistance Against Down Thrust of Transmission Tower Foundation
Wadannan load combinations za su iya taimaka don bearing strength na soil:
Yawan kudin combined with an additional weight of concrete above earth assumed to be acting on the total area of the bottom of the footing.
Moment due to side thrust forces at the bottom of the footing.
Structural design na base slab ya zama don wadannan load combination. In case of toe (τ) pressure calculation due to above load combination allowable bearing pressure to be increased by 25%.
Resistance Against Side Thrust of Transmission Tower Foundation
Chimney ya zama don limit state method for the combined action of axial forces, tension and compression and the associated maximum bending moment. In these calculations, tensile strength na concrete za su iya haɗa.
Resistance Against Uprooting of Stub of Transmission Tower Foundation
OLF of 10% (Ten percent) za su iya haɗa i.e. OLF = 1.10 for normal suspension towers and 1.15 for angle tower including Dead end/anchor tower. For special towers OLF shall be 1.20.
Statement: Respect the original, good articles worth sharing, if there is infringement please contact delete.
