Библиотека на Университет по архитектура, строителство и геодезия

Къде желаете да търсите

Какво желаете да търсите

Търсене в

Подредба

Каталог "Статии" | Списание

Evaluation of Column Load for Generally Uniform Grid Reinforced Pile Cap Failing in Punching

Honglei Guo

Чети онлайн

ЦБ III 1547

Детайли

Източник
ACI Structural journal
Издателство
American concrete institute
Година на издаване
2015
Пор.№
2
Страници
с. 123-134
Том
112
Ключови думи
STM
Отрасъл
Общ отдел. Наука. Библ. дело. Енциклопедии
Забележка
Рез. на англ. ез.
Анотация
Currently, the punching shear resistance of pile caps is frequently evaluated empirically, and although the strut-and-tie model (STM) may be used to calculate the issue, the two weaknesses of STM—conservative nature and difficult configuration—hinder its rational solution. To attempt to solve these issues, this paper presents a generalized method of spatial STMs to evaluate punching shear resistance of general pile caps with uniform grid reinforcement (TPM). Based on results of the spatial strut-and-tie bearing mechanism of pile cap punching failure, three-dimensional (3-D) rather than two-dimensional (2-D) strut strength is derived. During this process, nonlinear finite element analysis in conjunction with the derivation of a gradual least-square method for multiple variables is adopted. TPM is verified by 98 specimens in the literature, whose parameters (reinforcement ratio of tension tie, punching-span ratio, concrete strength, pile number, and pile arrangement) vary, respectively; the comparisons with the other four methods are made. It is indicated that TPM is extensively applicable to the evaluation of the punching shear resistance of general pile caps with uniform grid reinforcement.
Системен №
4447

Действия