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1、forced concrete structure reinforced with an overviewReinSince the reform and opening up, with the national economys rapid and sustained development of a reinforced concrete structure built, reinforced with the development of technology has been great. Therefore, to promote the use of advanced techn2、ology reinforced connecting to improve project quality and speed up the pace of construction, improve labor productivity, reduce costs, and is of great significance. Reinforced steel bars connecting technologies can be divided into two broad categories linking welding machinery and steel. There are 3、six types of welding steel welding methods, and some apply to the prefabricated plant, and some apply to the construction site, some of both apply. There are three types of machinery commonly used reinforcement linking method primarily applicable to the construction site. Ways has its own characteri4、stics and different application, and in the continuous development and improvement. In actual production, should be based on specific conditions of work, working environment and technical requirements, the choice of suitable methods to achieve the best overall efficiency.1、 steel mechanical link 1.15、 radial squeeze linkWill be a steel sleeve in two sets to the highly-reinforced Department with superhigh pressure hydraulic equipment (squeeze tongs) along steel sleeve radial squeeze steel casing, in squeezing out tongs squeeze pressure role of a steel sleeve plasticity deformation closely integra6、ted with reinforced through reinforced steel sleeve and Wang Liangs Position will be two solid steel bars linkedCharacteristic: Connect intensity to be high, performance reliable, can bear high stress draw and pigeonhole the load and tired load repeatedly.Easy and simple to handle, construction fast7、, save energy and material, comprehensive economy profitable, this method has been already a large amount of application in the project.Applicable scope : Suitable for , , grade reinforcing bar (including welding bad reinforcing bar ) with ribbing of 18- 50mm, connection between the same diameter or8、 different diameters reinforcing bar .1.2 must squeeze linkExtruders used in the covers, reinforced axis along the cold metal sleeve squeeze dedicated to insert sleeve Lane two hot rolling steel drums into a highly integrated mechanical linking methods.Characteristic: Easy to operate and joining fas9、t and not having flame homework , can construct for 24 hours , save a large number of reinforcing bars and energy.Applicable scope : Suitable for , set up according to first and second class antidetonation requirement -proof armored concrete structure , grade reinforcing bar with ribbing of hot roll10、ing of 20- 32mm join and construct live.1.3 cone thread connectingUsing cone thread to bear pulled, pressed both effort and self-locking nature, undergo good principles will be reinforced by linking into cone-processing thread at the moment the value of integration into the joints connecting steel b11、ars.Characteristic: Simple , all right preparatory cut of the craft , connecting fast, concentricity is good, have pattern person who restrain from advantage reinforcing bar carbon content.Applicable scope : Suitable for the concrete structure of the industry , civil building and general structures,12、 reinforcing bar diameter is for for the the 16- 40mm one , grade verticality, it is the oblique to or reinforcing bars horizontal join construct live. conclusionsThese are now commonly used to connect steel synthesis methods, which links technology in the United States, Britain, Japan and other cou13、ntries are widely used. There are different ways to connect their different characteristics and scope of the actual construction of production depending on the specific project choose a suitable method of connecting to achieve both energy conservation and saving time limit for a project ends.鋼筋混凝土結構14、中鋼筋連接綜述改革開放以來，隨著國民經濟的快速、持久發展，各種鋼筋混凝土建筑結構大量建造，鋼筋連接技術得到很大的發展。因此，推廣應用先進的鋼筋連接技術，對于提高工程質量、加快施工速度、提高勞動生產率、降低成本，具有十分重要的意義。鋼筋連接技術可分為鋼筋焊接和鋼筋機械連接兩大類。鋼筋焊接有6種焊接方法，有的適用于預制廠，有的適用于現場施工，有的兩者都適用。鋼筋機械連接常用有3種方法，主要適用于現場施工。各種方法有其自身特點和不同的適用范圍，并在不斷發展和改進。在實際生產中，應根據具體的工作條件、工作環境和技術要求，選用合適的方法以期達到最佳的綜合效益。1、鋼筋機械連接1.1徑向擠壓連接將一個鋼套15、筒套在兩根帶肋鋼筋的端部，用超高壓液壓設備（擠壓鉗）沿鋼套筒徑向擠壓鋼套管，在擠壓鉗擠壓力作用下，鋼套筒產生塑性變形與鋼筋緊密結合，通過鋼套筒與鋼筋橫肋的咬合，將兩根鋼筋牢固連接在一起。特點：接頭強度高，性能可靠，能夠承受高應力反復拉壓載荷及疲勞載荷。操作簡便、施工速度快、節約能源和材料、綜合經濟效益好，該方法已在工程中大量應用。適用范圍：適用于1850mm的、級帶肋鋼筋（包括焊接性差的鋼筋），相同直徑或不同直徑鋼筋之間的連接。1.2軸向擠壓連接將兩鋼筋安放成對接形式，利用焊接電流通過兩鋼筋接觸點產生塑性區及均勻的液體金屬層，迅速施加頂鍛力完成的一種壓焊方法。特點：操作簡單、速度快、無明火作業16、可全天候施工，節約大量鋼筋和能源。適用范圍：適用于按一、二級抗震設防要求的鋼筋混凝土結構中2032mm的、級熱軋帶肋鋼筋現場連接施工。1.3錐螺紋連接利用錐螺紋能承受拉、壓兩種作用力及自鎖性、密封性好的原理，將鋼筋的連接端加工成錐螺紋，按規定的力矩值把鋼筋連接成一體的接頭。利用錐螺紋能承受拉、壓兩種作用力及自鎖性、密封性好的原理，將鋼筋的連接端加工成錐螺紋，按規定的力矩值把鋼筋連接成一體的接頭。特點：工藝簡單可以預加工連接速度快同心度好，不受鋼筋含碳量和有無花紋限制等優點。適用范圍：適用于工業與民用建筑及一般構筑物的混凝土結構中，鋼筋直徑為1640mm的、級豎向、斜向或水平鋼筋的現場連接施工。以上是對現今常用的鋼筋連接方法的綜述，這些連接技術在美國、英國、日本等國家均得到廣泛應用。不同的連接方法有其不同的特點和適用范圍，在實際施工生產中需視具體工程情況選擇合適的連接方法，以達到既節約能源又節省工期的目的。