Load Induced Cracking and Failure of Concrete Deck Slabs in Girder-Slab Type Bridges

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

An experimental study was conducted on three different groups of girder-slab type, reinforced concrete deck panels, to investigate the pattern of crack formation, crack growth and overall failure mode. Areas of study included (i) the influence of distribution steel on crack pattern and crack growth under a simulated moving wheel load; (ii) critical orientation and nucleation of cracks in panels weakened by a flaw in the form of conical inserts; and (iii) mode of failure and ultimate capacity of deck panels with varying amounts of reinforcement steel and different load areas. The study indicate that with higher amount of distribution steel, finer cracks spread over a larger area are produced. The flexural capacity of a deck slab of girder-slab type bridge is enhanced to an appreciable degree due to support restraints. No significant advantage is achieved by increasing the amount of steel. A hypothesis has been advanced that impairment of punching capacity occurs only when (i) the cracks developed join to form a closed envelop (a flawed zone); (ii) the crack surface geometry bears a critical orientation with regard to wheel load and has reached a critical height through the slab thickness; and (iii) the closed boundary of this flawed zone at the bottom of the slab is greater than that of the weel print. All reinforced panels failed in punching shear type failure.

روابط وملفات

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التعريف والنوع

رقم الوثيقة: 03d545eb-0d5b-486c-95d7-443d768eabdd
رقم العقد: 0
نوع الوسائط: Crawler
نوع المحتوى: الرسائل العلمية
صيغة المصدر: رسائل ماجيستير
نوع الملف: pdf text
أسماء الملفات: 944018_1.pdf

بيانات النشر

ترجمة العنوان: التشققات والفشل في أسطح الجسور الخرسانية بسبب الأحمال
ألقاب المؤلفين: [{"name_ar":" Abul Kalam Azad","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"قيصر كريم","title_ar":"اعداد","title_en":"Preparation"}]
اللغة: English

المصدر والدورية

اسم المصدر: Load Induced Cracking and Failure of Concrete Deck Slabs in Girder-Slab Type Bridges

المحتوى والصفحات

عدد الصفحات: 0

إشراف وإعداد

الإشراف: Abul Kalam Azad
الإعداد: قيصر كريم

الاقتباسات الببليوغرافية

APA

Abul Kalam Azad و قيصر كريم. (1989). Load Induced Cracking and Failure of Concrete Deck Slabs in Girder-Slab Type Bridges. أطروحة(رسائل ماجيستير). كلية الهندسة-جامعة الملك فهد للبترول والمعادن. السعودية.

MLA

Abul Kalam Azad و قيصر كريم. Load Induced Cracking and Failure of Concrete Deck Slabs in Girder-Slab Type Bridges. 1989. كلية الهندسة-جامعة الملك فهد للبترول والمعادن، رسائل ماجيستير.