電大混凝土結(jié)構(gòu)設(shè)計(jì)原理期末復(fù)習(xí)考試重點(diǎn)資料小抄(參考版)
2025-06-06 21:57本頁(yè)面
【正文】 s botox and face lifts, there are much more that ancient wisdom has to offer. 。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. The pursuit of beauty is a mon goal for most women, whether they live in the modern world today or in the modest times of the past. The pursuit of beauty is also a lifelong journey, something that demands pe rseverance and mitment. Summer is here, and so are the hot temperatures, humid air and harmful UV rays. Most Chinese women perfer fairer plexions, which means they have to do more work to stay beautiful during the hottest time of the year. However, without SPF50 sunscreens and air conditioned rooms, how did women in ancient China cope with the heat and remain beautyconscious? In this article, you39。s cooperation with Central Asian countries, a senior official said. Shaanxi Governor Lou Qinjian said the province is fresh, rich and unique, as it was 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 pu blic 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 United 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。s long history of fine ceramics lures followers from across the world, report Peng Yining and Hu Kaiyong in Jingdezhen, Jiangxi province. Dressed in paintstained coveralls, China De La Vega easily navigated the maze of alleyways running alongside a ceramics factory in Jingdezhen, Jiangxi province. The 31yearold Australian potter and painter wound her way through armies of onemeterhigh ceramic Buddhas and piles of porcelain shards while nodding greetings to the workers and residents. She said the locals are used to seeing foreigners in Jingdezhen, China39。porcelain capital39。 Preserving the ancient traditions Foreigners flock to China39。s 39。因此，砌體結(jié)構(gòu)以承受壓力為主。 3．簡(jiǎn)述預(yù)應(yīng)力混凝土結(jié)構(gòu)和砌體結(jié)構(gòu)的特點(diǎn) ?4．影響砌體抗壓強(qiáng)度的主要因素有哪些 ? 與普通鋼筋混凝土結(jié)構(gòu)相比，預(yù)應(yīng)力混凝土結(jié)構(gòu)可以使混凝土不出現(xiàn)拉應(yīng)力 (或允許出現(xiàn)拉應(yīng)力限制應(yīng)力值或允許出現(xiàn)裂縫限制裂縫寬度 )，因而大大改善了結(jié)構(gòu)的工作性能。的乘積越大，則梁抗剪能力越強(qiáng)。 (3)縱筋配筋率弘：梁的抗剪能力，隨縱向配筋率的增大而提高。 1．簡(jiǎn)述影響鋼筋混凝土受彎構(gòu)件斜截面強(qiáng)度的主要因素有哪些 ?這些因素是怎樣影響 (1)剪跨比 m：隨著剪跨比 m的增加，梁的破壞形態(tài)按斜壓 (m1)、剪壓 (1m3)和斜拉 (m3)的順序演變，而抗剪承載力逐步降低。鋼筋混凝土軸心受壓構(gòu)件按配筋方式不同 可分為兩種形式： (1)配有縱向鋼筋及箍筋的軸心受壓構(gòu)件，稱為普通箍筋柱； (2)配有縱向鋼筋及螺旋箍筋 (或焊接環(huán)形箍筋 )的軸心受壓構(gòu)件，稱為螺旋箍筋柱，也稱為間接箍筋柱。其中，最主要的因素有剪跨比、混凝土強(qiáng)度、縱筋配筋率和配箍率與箍筋強(qiáng)度。與箍筋強(qiáng)度 R非的乘積越大，則梁抗剪能力越強(qiáng)。 (3)縱筋配筋率口：梁的抗剪能力，隨縱向配筋率的增大而提高。 2．簡(jiǎn)述影響鋼筋混凝土受彎構(gòu)件斜截面強(qiáng)度的主要因素有哪些 ?這些因素是怎樣影響的 ? 答：影響鋼筋混凝土受彎構(gòu)件斜截面強(qiáng)度的主要因素有： (1)剪跨 l： t研：隨著剪跨比 m的增加，梁的破壞形態(tài)按斜壓 (優(yōu) 1)、剪壓 (1m3)和斜拉 (m3)的順序演變，而抗剪承載力逐步降低。 5．剪力栓釘連接的主要破壞形式及防止方法如何 ?答：剪力栓釘連接的主要破壞形式及防止方法： (1)栓釘桿被剪斷；通過計(jì)算防止，需滿足單 栓抗剪容許承載力； (2)較薄
試題試卷相關(guān)推薦
鄂ICP備17016276號(hào)-1