<progress id="6u4tb"></progress>

    <tbody id="6u4tb"><span id="6u4tb"><address id="6u4tb"></address></span></tbody>
      1. <track id="6u4tb"><div id="6u4tb"></div></track>
                <menuitem id="6u4tb"></menuitem>

                當前位置: 首頁 > 新聞資訊 > 行業動態 正文


                添加時間:2019-02-15      發布人:http://www.namegeneration.net

                  The house is made up of thatched hut, earthen house and brick house. It has developed to the present reinforced concrete buildings.
                  Let's not go into the history of the house, but first look at the origin of reinforced concrete.
                  Development History of Reinforced Concrete
                  1868年一個法國園丁莫尼埃, 獲得了包括鋼筋混凝土花盆,以及緊隨其后應用于公路護欄的鋼筋混凝土梁柱的
                  In 1868, a French gardener, Monier, obtained patents for reinforced concrete flowerpots and subsequently reinforced concrete beams and columns used in highway guardrails.
                  In 1872, the world's first reinforced concrete structure was built in New York, USA, and a new era in the history of human architecture began.
                  Since 1900, reinforced concrete structures have been widely used in engineering circles.
                  In 1928, a new type of reinforced concrete structure, prestressing reinforced concrete, appeared and was widely used in engineering practice after World War II.
                  Story: A French horticulturist by name. Monier has a big garden with beautiful flowers all year round, but flower beds are often broken by tourists. For this reason, Monier often thought, "What can we do to make people not only step on the flower bed, but also crush it easily?" One day, when Monier was transplanting flowers, he accidentally broke a pot of flowers. The pot broke into pieces, but the soil around the roots was just a bunch. "Oh! The roots of the flowers and trees are crisscrossed, and the soft soil is firmly linked together! Inspired by this, he weaved the wire into a net like the roots of flowers and trees, and then stirred it with cement and sand to make a flower bed, which was very solid indeed.
                  Reinforced concrete structures are used in construction projects. In 1849, French J. L. Lambo and French J. Monier in 1867 successively applied cement mortar on both sides of the wire mesh to make boats and flower pots. In 1884, the German Construction Company purchased Monier's patents and carried out the first batch of scientific experiments on reinforced concrete. The strength, fire resistance and bond strength between reinforced concrete and concrete were studied. In 1886, German Engineer M. Kernen put forward the calculation method of reinforced concrete slabs. Meanwhile, British W.D. Wilkinson proposed a patent for reinforced concrete floor slabs; American T. Hayte tested concrete beams; French F. Kwane published a monograph on the application of reinforced concrete.
                  In the early stage of the emergence of reinforced concrete, the allowable stress design method based on the elastic theory was mostly adopted. In the late 1930s, the Soviet Union began to adopt the failure strength design method considering the plasticity of reinforced concrete failure stage; in 1950, it was further improved to the limit state design method, which combines the advantages of the former two design methods. It not only checks the allowable stress, allowable crack width and deflection in the use stage, but also checks the bearing capacity in the failure stage. It has been adopted by many countries and international organizations.
                上一條: 鋼筋的維護方法主要幾點!
                下一條: 鋼筋取樣規范是怎么規定的?
                咨詢熱線: 13605413762
                <progress id="6u4tb"></progress>

                  <tbody id="6u4tb"><span id="6u4tb"><address id="6u4tb"></address></span></tbody>
                    1. <track id="6u4tb"><div id="6u4tb"></div></track>
                              <menuitem id="6u4tb"></menuitem>