【正文】 s Day! in shops, hotels and restaurants. But few young women will mark the festival with their boyfriends, or take part in traditional activities to pray for cleverness. 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 23 。s Day on February 14, characterized by bouquets of roses, chocolates and romantic candlelight dinners, than they do about their homegrown day for lovers. Even Qixi is nowadays referred to as the Chinese Valentine39。s misery, the cow told him to turn its hide into a pair of shoes after it died. The magic shoes whisked Niulang, who carried his two children in baskets strung from a shoulder pole, off on a chase after the empress. The pursuit enraged the empress, who took her hairpin and slashed it across the sky creating the Milky Way which separated husband from wife. But all was not lost as magpies, moved by their love and devotion, formed a bridge across the Milky Way to reunite the family. Even the Jade Emperor was touched, and allowed Niulang and Zhinu to meet once a year on the seventh night of the seventh month. This is how Qixi came to be. The festival can be traced back to the Han Dynasty (206 BCAD 220). Traditionally, people would look up at the sky and find a bright star in the constellation Aquila as well as the star Vega, which are identified as Niulang and Zhinu. The two stars shine on opposite sides of the Milky Way. Customs In bygone days, Qixi was not only a special day for lovers, but also for girls. It is also known as the Begging for Skills Festival or Daughters39。s largest virgin forest, and known for its spring and ecological environment, Arxan is marveled at by many tourists as the purest land on earth. You cannot miss out the Autumn of Arxan. It is definitely the best with brightlycolored scenery full of emotions. Autumn in the northern part of the country es earlier than the South. A September rain followed by the footprints of Autumn brings more colors to the once emerald green mountain and blooming grassland. Shutterbugs flock to see for themselves the marvel of splendid colors around the mountains and waters, many of whom have travel a long distance and even camp here only to capture a moment of the nature wonder. The silver birch turns golden, while the larch is still proudly green. You will find yourself drowned in the intoxicating red of the wild fruits as well as the glamour of flowers in full blown. And your heart will be lingering on the woods as it39。 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 21 參考文獻 [1]蔣杰鋒 .淺析混凝土橋梁裂縫產(chǎn)生的原因與處理辦法［ J］ . 鐵道勘測與設(shè)計 ，2021,（ 05） :4749. [2]曾力軍 .淺析混凝土裂縫的原因、預(yù)防和處理［ J］ .江西建材， 2021,（ 03） :3335. [3] 中 華 人 民 共 和 國 住 房 與 城 鄉(xiāng) 建 設(shè) 部 編 . 《 混 凝 土 結(jié) 構(gòu) 設(shè) 計 規(guī)范》 . （ GB500102021） [4]馬建革， 潘志新 ，馬偉 .《 混凝土缺陷處理技術(shù)及應(yīng)用 》 . 黃河水利出版社 .2021. [5]惠云玲 .《 工程結(jié)構(gòu)裂縫診治技術(shù)與工程實例 》 . 中國建筑工業(yè)出版社 .2021. [6]鋼筋混凝土裂縫機理與控制措施 .工程力學(xué)， 1/1/,23(z1). [7]鋼筋混凝土裂縫原始分析及預(yù)防措施 .中國高新技術(shù)企業(yè)， 2/1/(13). 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 22 請您刪除一下內(nèi)容， O(∩ _∩ )O 謝謝?。?！ Many people have the same mixed feelings when planning a trip during Golden Week. With heaps of time, the sevenday Chinese 請您刪除一下內(nèi)容， O(∩ _∩ )O 謝謝?。。?National Day holiday could be the best occasion to enjoy a destination. However, it can also be the easiest way to ruin how you feel about a place and you may bee more fatigued after the holiday, due to battling the large crowds. During peak season, a dream about a place can turn to nightmare without careful planning, especially if you travel with children and older people. As most Chinese people will take the holiday to visit domestic tourist destinations, crowds and busy traffic are inevitable at most places. Also to be expected are increasing transport and acmodation prices, with the possibility that there will be no rooms available. It is also mon that you39。 下面為 照鏡山隧道二襯 裂縫處理過程和效果現(xiàn)場照片： 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 19 裂縫處理過程照片 裂縫處理注漿結(jié)束效果圖 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 20 5 結(jié)論與展望 裂縫是混凝土結(jié)構(gòu)中普遍存在的一種現(xiàn)象，它的出 現(xiàn)不僅會影響結(jié)構(gòu)物的表觀質(zhì)量，嚴重的會降低工程的使用壽命并危及行車安全，但通過以上對鐵路隧道二襯裂縫的形式、成因、防治手段的分析可知，只要嚴格按照有關(guān)的設(shè)計和施工規(guī)范精心設(shè)計和嚴格施工，可大大減少二襯表面裂縫產(chǎn)生的可能性，提高隧道襯砌的質(zhì)量。 （ 6） 二次注漿：為了保證漿液充滿，在注漿后約半小時，可以對每個注漿咀再次補漿。垂直縫，一般由下往上注漿，水平縫，從一端向另一端逐個注漿。注漿前先配注漿液，在塑料杯中分別倒入 TK 型注縫膠甲液和乙液，按重量比甲液 :乙液＝ 2:1 混合均勻備用。每條連通的裂縫，先將注漿咀用鋁鉚釘堵上，留一個咀用補縫器壓氣，在封閉的裂縫 上涂肥皂水進行試漏。然后，用粘咀用淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 18 漿將注漿咀在預(yù)留的小縫處騎縫粘上，整個底座都要用粘咀用漿包嚴，固化后周邊可能有裂口，必須反復(fù)用封縫用漿補上，以免注漿時漏漿。首先，在預(yù)計要貼咀的裂縫位置貼 上醫(yī)用白膠布，再用窄毛制將封縫用漿沿裂縫來回涂刷，使裂縫封閉。 （ 2） 粘貼注漿咀和封閉裂縫： TQ 型注漿咀宜用粘咀用漿騎縫粘貼，注漿咀的間距與裂縫寬度有關(guān)，其間距參考表 2。 （ 1） 裂縫清理：縫中如被泥土粉塵堵塞，可用小型工業(yè)吸塵器吸出。 TQ 型注漿咀。 材料和機具 TK 型注縫膠 ； TZ 型封縫膠和封縫粉：按一定比例可配制粘咀用漿和封縫用漿用于粘貼注漿咀和封閉裂縫。 淺談 混凝土結(jié)構(gòu)裂縫成因及控制措施 17 4 工程實例分析 一 、裂縫種類及產(chǎn)生原因 某客運專線照鏡山隧道 二襯 施工中因養(yǎng)護或拆模 時間過早 等原因，造成襯砌混凝土表面出現(xiàn)了縫寬 ～ 的 非受力裂縫 ，屬于溫度裂縫。 ⑦ 當混凝土灌完 30 ㎜后，應(yīng)返回檢查，看混凝土是否有下沉等現(xiàn)象，如有應(yīng)及時采取措施。 ⑥ 灌料過程中用板條插搗，輔助加速倒流。 ④ 灌料應(yīng)從一側(cè)開始，至另一側(cè)溢出為止，不得從四周同時進行灌料。現(xiàn)場混凝土攪拌容器應(yīng)不漏漿。 （ 2）施工注意事項和技術(shù)措施 ① 嚴格控制粗細骨料含泥量，當達不到規(guī)范要求是應(yīng)用高壓水沖洗干凈。 混凝土置換法 混凝土置換法是處理嚴重損壞混凝土的一種有效方法，此方法是先將損壞的混凝土剔除，然后再置換入新的混凝土或其他材料。碳纖維布加固是用粘貼樹脂將碳纖維布粘貼到混凝土構(gòu)件的相關(guān)部位，結(jié)構(gòu)加固用的粘貼樹脂通常選用環(huán)氧基類，該類樹脂的力學(xué)性能指標可滿足使用要求，耐久性好，長期受力性能優(yōu)良，易于施工。 粘鋼加固施工的流程為：被粘混凝土和鋼板表面處理 —— 對加固構(gòu)件卸荷，同時配制粘結(jié)劑 —— 在混凝土表面和鋼板表面涂膠 —— 粘貼 —— 用支撐固定或用夾具加壓 —— 固化 —— 卸支撐、檢驗 —— 粉刷水泥砂漿保護。加固用 鋼板以 3號鋼或 16號錳鋼為宜，其厚度以 2～ 6mm為宜。 粘鋼加固法適用于承受靜力作用的一般受彎及受拉構(gòu)件，其混凝土強度等級不應(yīng)低于 C15。粘鋼加固是用粘結(jié)劑（建筑結(jié)構(gòu)膠）將鋼板粘貼到構(gòu)件需要加固的部位，以提高混凝土構(gòu)件承載力的一種加固方法。彈性支點法是以支撐結(jié)構(gòu)的受彎或桁架作用來間接傳遞荷載的一種加固方法。按支撐結(jié)構(gòu)的受力性能分為剛性支點和彈性支點兩種 。 （ 4）改變結(jié)構(gòu)傳力途徑加固法。