Wpływ cementacji na zachowanie się gruntów pod fundamentami budynków w trakcie trzęsienia ziemi

• Autorzy: Akyol E. , Korkmaz T.

Warianty tytułu

EN

Effects of cement grouting on seismic performance of building foundations

• Języki publikacji: PL EN

Abstrakty

PL

W ostatnich dziesięcioleciach wzniesiono dużo budynków na gruntach wątpliwej jakości, co było spowodowane szybkim wzrostem urbanizacji. Spowodowało to wzrost zagrożenia w przypadku wystąpienia trzęsienia ziemi na tych terenach, zwłaszcza jeżeli nie zastosowano w trakcie budowy odpowiednich rozwiązań inżynierskich. Stosuje się cementację gruntu w celu poprawy sejsmicznych właściwości fundamentów, a jego efektywność sprawdzono przez pomiar przeważającego okresu drgań gruntu i szybkości fali ścinającej. Średni wynik pomiarów przeważającego okresu i szybkości fali zmienił się odpowiednio z 0,58 s na 0,23 s i z 374 m/s na 449 m/s. Poprawa właściwości gruntu osiągnęła ponad 50%. Ten wynik pokazuje, że cementacja może korzystnie zmienić zachowanie się słabych sejsmicznie fundamentów budynków w przypadku trzęsienia ziemi. Można więc polecać tę metodę do zmniejszenia ryzyka, związanego z aktywnością sejsmiczną, dla istniejących budynków.

EN

In last decades a large number of buildings is being constructed on problematic soils because of rapid urbanization It causes growing earthquake risks in such areas if combined with lack of engineering. Grouting of ground is being employed to improve seismic performance of foundations and its effectiveness has been verified by examination of predominant period of ground vibration and shear wave velocity. The average period and shear wave velocity of ground was changed from 0.58 s to 0.23 s and 374 m/s to 449 m/s, respectively. The improvement of ground properties reached more than 50%. The results show that grouting can improve earthquake performance of seismically weak building foundations. Thus it can be advised to mitigate the seismic risk of existing buildings.

Słowa kluczowe

PL

fundament; podłoże gruntowe; grunt słaby; wzmacnianie; cementacja; odporność sejsmiczna

EN

foundation; subsoil; soft soil; strengthening; grouting; seismic resistance

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2015
• Tom: R. 20/82, nr 5
• Strony: 313--321
• Opis fizyczny: Bibliogr. 37 poz., il., tab.

Twórcy

autor

Akyol E.

• Dept. of Geo. Engineering, Pamukkale University, Denizli, Turkey

autor

Korkmaz T.

• Dept. of Geo. Engineering, Pamukkale University, Denizli, Turkey

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