【正文】 an. Lou held a joint interview with 27 media, including China Daily, the first in a series of interviews entitled Chinese Media Along the Silk Road. The interviews will be in Shaanxi and Gansu provinces and the Xinjiang Uygur autonomous region, as well as Kazakhstan, Uzbekistan and Turkey. The media group held the first interview on Wednesday morning in Xi39。s public security bureau shows some 100 foreign visitors enjoyed the 72hour policy by the end of March, most of them from the United States, the United Kingdom and Germany. Chengdu also reported robust growth in its overall tourist industry last year. Official statistics show that it received some 150 million tourists last year, an increase of 28 percent from 2021. Around million came from abroad, an increase of 12 percent. Total revenue from touri sm surpassed 133 billion yuan ($). During his visit to Kazakhstan in September, Chinese President Xi Jinping proposed that China and Central Asia join hands to build a Silk Road economic belt to boost cooperation. The idea has been widely echoed in Central Asian countries, being an encouraging blueprint for Chinese areas along the Silk Road that has linked Asia and Europe for more than 2,000 years. In the next three weeks, China Daily reporters will travel through the belt in China and in Kazakhstan, Uzbekistan and Turkey. They will show the progress and expectations of the countries, businesses and peoples on the route. Shaanxi the start of the ancient Silk Road has positioned itself as the new starting point for the development of the Silk Road Economic Belt, which will strengthen China39。s ancient indigenous religion, while Du jiang yan is considered to be the oldest functioning watercontrol project in the world. Chengdu ranked third in tourist facilities, management and services among 60 Chinese cities in a customer satisfaction survey released last year. But, Li added that efforts are still needed to develop more tourism products, improve English services and provide accurate translation of traffic signs and scenic billboards. Zhao Yun, chairwoman of Bri tish Chamber of Commerce Southwest China, told China Daily that his colleagues found the policy very convenient. A British client once flew here and stayed for just one day to check her ordered goods, she said. Zhao was born in Shanxi province, but she has lived in Chengdu for more than 10 years. My life was like a running race moving from place to place. I also lived in Beijing and Shanghai before, she said. But Chengdu is a place that you never want to leave once settling down. It is now my second hometown, she said. If the environment is further improved, the city will attract more people to visit and live, with the 72hour visafree policy and pelling conditions in transportation, culture, climate and cuisine, he said. Foreigners also gave positive feedback on the policy. A spokesman from Dell Inc said the pany has a global hub of operation in Chengdu, so the threeday visa has an immediate and positive influence on the pany39。s level of internationalization. The policy will also bring direct economic revenue, Li said. Chengdu has many cultural legacies and is also a paradise for panda lovers with the world39。 500130t= 14130F F 解： Visafree policy brings Chengdu biz, tourism boost. Making national headlines several times, Chengdu39。 2． 如圖所示的對 接焊縫連接，鋼材為 Q235，焊條 E43 型，手工焊，焊縫質(zhì)量為三級，施焊時加引弧板，已知： 185wtf ? N/mm2， 215?wcf N/mm2，試求此連接能承受的最大承載力。 四、計算題（每小題 15 分 ，共 30 分） 有一軸心受壓實腹式柱，柱截面為焊接工字型，兩主軸方向均屬 b 類截面，如圖所示，鋼材 Q235，已知： ?N 1500kN， ml x ? ， ml y ? ， 2/215 mmNf ? ，試驗算此柱的整體穩(wěn)定性。 6．框架梁、柱的構(gòu)造措施應考慮哪些內(nèi)容？ 答：框架梁的構(gòu)造措施應考慮：梁截面尺寸、梁的配筋率、梁的箍筋、梁內(nèi)縱筋錨固。腹桿為軸心受拉桿件或軸心受壓桿件。 4．屋架桿件的受力特點如何？ 答：屋架桿件的受力特點：上弦桿一般為受壓桿件，當有節(jié)間荷載時為壓彎構(gòu)件。但在摩擦力被克服后變形較大，故僅適用于承受靜力荷載或間接承受動力荷載的結(jié)構(gòu)、構(gòu)件的連接。 承壓型連接：起初由摩擦傳力，后期同普通螺栓連接一樣，依靠桿和螺孔之間的抗剪和承壓來傳力。 第 19 頁 共 21 頁 摩擦型連接：外力僅依靠部件接觸面間的摩擦力來傳遞。 對直接承受動力荷載的普通螺栓受拉連接應采用雙螺帽或其他能防止螺帽松動的有效措施。 A．“小震不壞，中震可修，大震不倒” B．“小震不倒，中震不壞，大震可修” C．“小震可修，中震不倒，大震不壞” D．“小震不壞，中震不倒，大震可修” 10．下列（ A）為可不進行天然地基與基礎抗震承載力驗算的建筑。 A．桿件計算長度 B．截面回轉(zhuǎn)半徑 C．長細比 D．穩(wěn)定系數(shù) 8．焊接工字形截面梁腹板 設置加勁肋的目的是（ D）。 A．抗拉強度 B．屈服強度 C．比例極限 D．極限強度 7．軸心受力構(gòu)件不應過分柔弱應具有一定的剛度，不使構(gòu)件產(chǎn)生過大的變形。 A． 栓桿的抗剪承載力 B． 被連接構(gòu)件（板）的承壓承載力 C． A、 B 中的較大 值 D． A、 B 中的較小值 第 18 頁 共 21 頁 5． 軸心受壓構(gòu)件的承載力往往是由（ D）條件決定的。 A． 對接焊縫 B． 角焊縫 C． 斷續(xù)焊縫 D． 斜焊縫 3．在承受動力荷載的連接中，可用（