電大土木工程本科混凝土結(jié)構(gòu)設(shè)計(jì)原理復(fù)習(xí)試題參考小抄【完整版】-電大結(jié)構(gòu)設(shè)計(jì)原理本試題資料(參考版)
2025-06-07 11:23本頁(yè)面
【正文】 an, the starting point of the ancient Silk Road, a trade channel established more than 2,000 years ago linking China, Central Asia and Europe. 。s cooperation with Central Asian countries, a senior official said. Shaanxi Governor Lou Qinjian said the province is fresh, rich and unique, as it w as when it anchored one end of the ancient Silk Road. It is the best option for acmodating industrial transfers from East China or the w orld at large, he said on Wednesday in Xi39。s business development. Rudy Buttignol, president of the public broadcasting pany in British Columbia, Canada, said his work requires frequent travel to Chengdu and the policy makes the trips easier. Data from the city39。s largest breeding and research center. Three days are long enough for foreign visitors to visit those iconic tourist spots, he noted. The city is home to the remains of the Jin sha civilization that dates back more than 3,000 years as well as the Qing cheng Mountains and the Du jiang yan irrigation system. Qing cheng has long been recognized as the birthplace of Taoism, China39。s 72hour visafree policy has attracted wide attention from both Chinese and foreign experts and businessmen since it took effect on Sept 1 last year. The program permits citizens from 51 countries and regions including the Un ited States, Australia, Canada and Japan who have valid visas and flight tickets to a third country to spend three days in the city. The capital of Sichuan province is the first city in the western region of China to offer foreign tourists a threeday visa and the fourth nationwide to adopt the policy following Shanghai, Beijing and Guangzhou. Li Zhiyong, deputy dean of the tourism institute at Sichuan University, said the move contributes to a large increase in the number of overseas tourists and raises the city39。 5．什么是偏心受壓構(gòu)件的界限破壞 ? 答：具有某個(gè)特定配筋率的柱，當(dāng)遠(yuǎn)離軸向力一側(cè)的鋼筋屈服與受壓區(qū)混凝土壓碎同時(shí)發(fā)生，我們把柱的這種破壞特征稱為“界限破壞”。此外，當(dāng)梁截面由于不同荷載組合而承受正負(fù)彎矩 的情況下，亦可按雙筋截面計(jì)算。 3．在什么情況下采用雙筋梁 ? 答：采用雙筋梁的情況：當(dāng)構(gòu)件承擔(dān)的彎矩過(guò)大，而截面尺寸受建筑凈空限制不能增大，混凝土強(qiáng)度等級(jí)也不宜再提高，采用單筋截面將無(wú)法滿足 2≤氕 _71。 (2)超筋梁破壞；混凝土先被壓碎，鋼筋不屈服，屬脆性破壞。共計(jì) 25 分 ) 1．荷載作用按作用時(shí)間的長(zhǎng)短和性質(zhì)分為哪些類型 ? 答：作用在結(jié)構(gòu)上的荷載，按作用時(shí)間的長(zhǎng)短和性質(zhì)，可分為永久荷載、可變荷載和偶然荷載三類。 已知： 解： 2．鋼筋混凝土矩形截面簡(jiǎn)支梁， 截面尺寸為 混凝土強(qiáng)度等級(jí) 為 C25，箍筋為 HRB335 僅配箍筋 試求出該梁斜截面所能承受的均布荷載設(shè)計(jì)值 q。 4．影響無(wú)腹筋簡(jiǎn)支梁斜截面受剪承載力的主要因素有哪些 ?答： 5．什么是偏心受壓構(gòu)件的界限破壞 ?答： 四、計(jì)算題 (共計(jì) 25 分 ) 1．鋼筋混凝土梁截面尺寸 6— 200ram， h=450ram
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