Analysis of dynamic response of a low-rise, typical mansonry building to kinematics excitation

• Autorzy: Tatara T.

Warianty tytułu

PL

Analiza odpowiedzi dynamicznej niskiego, typowego budynku murowego na wymuszenia kinematyczne

• Języki publikacji: EN

Abstrakty

EN

The paper presents theoretical analysis of the behaviour of a typical, Iow-rise masonry building subjected to dynamic influences of mining origin. Theoretical analsis requires constructing a model, by means of which an exact assessment of efforts in individual structural elements of the building can be made. Several models of the building were assumed. The influence of the weight of thermal insulation at the roof level, as well as influence of the proposed allowance for the flexibility of joints between walls and floor slabs were assessed on the dynamic properties of the model and the level of the dynamic response. Characteristics of the models, determined theoretically, are comparable with those obtained in measurements on real objects. The paper points to the possibility of using the proposed models to calculate dynamic response of Iow-rise masonry buildings subjected to seismic vibrations. The dynamic stresses in load-bearing walls, calculated on the basis of representative records due of mining-related rockburst, should not cause damage to structural elements of the building. They could cause degradation of non-structural elements. Analyses carried out indicate, that concentrations of maximum principal tensile stresses occur mainly at the basement and ground floor levels, at door and window openings. Conclusions presented here pertain to vibration records assumed and can be different from those obtained using records with differing dominating frequencies.

PL

W pracy przedstawiono analizę teoretyczną zachowania się typowego niskiego budynku murowego poddanego wpływom dynamicznym pochodzenia górniczego. Analiza teoretyczna wymaga budowy modelu, za pomocą którego można dokonać dokładnej oceny wytężenia poszczególnych elementów konstrukcyjnych budynku. Przyjęto kilka modeli badanego budynku. Oceniono wpływ ciężaru ocieplenia w poziomie stropodachu oraz wpływ zaproponowanego uwzględnienia podatności połączeń ścian i stropu na właściwości dynamiczne modelu i poziom odpowiedzi dynamicznej. Wyznaczone teoretycznie charakterystyki dynamiczne modeli są porównywalne z uzyskanymi z pomiarów na obiekcie rzeczywistym. Praca wskazuje na możliwość wykorzystania zaproponowanych modeli do obliczania dynamicznej odpowiedzi niskich budynków murowych podlegających drganiom sejsmicznym. Obliczone dynamiczne naprężenia w ścianach nośnych od przyjętych, reprezentatywnych wymuszeń wywołanych eksploatacją górniczą nie powinny spowodować uszkodzeń elementów konstrukcyjnych budynku. Mogą one wywołać uszkodzenia elementów niekonstrukcyjnych. Przeprowadzone analizy wskazują, że koncentracja maksymalnych, głównych naprężeń rozciągających występuje przede wszystkim w poziomie piwnicy i parteru przy otworach drzwiowych i okiennych. Podane wnioski dotyczą przyjętych tu przebiegów drgań i mogą się różnić od uzyskanych przebiegów z innymi dominującymi częstotliwościami.

Słowa kluczowe

PL

dynamika; budynek niski; budynek murowany; wymuszenie kinematyczne; drganie sejsmiczne; teren górniczy

• Wydawca: Komitet Inżynierii Lądowej i Wodnej PAN ; Politechnika Warszawska, Wydział Inżynierii Lądowej
• Czasopismo: Archives of Civil Engineering
• Rocznik: 2001
• Tom: Vol. 47, nr 1
• Strony: 19--40
• Opis fizyczny: Bibliogr. 35 poz., il.

Twórcy

autor

Tatara T.

• Technical University of Kraków

Bibliografia

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