【正文】 troduces the construction steel structure material properties and detection methods, focusing on the steel structure detection method and quality detection method in this paper, the analysis, to ensure the quality of light steel structure, steel structure material performance into full play. Key words: steel structure inspection。必須查明鋼材牌號(hào)、技術(shù)指標(biāo)、極限強(qiáng)度、屈服強(qiáng)度、受拉時(shí)的延伸率、冷變、反復(fù)彎曲、沖擊韌性與化學(xué)成分等。用磁性測(cè)厚儀時(shí)，要調(diào)好儀器，使其具有正常工作性能。由于這些缺陷的存在和相互影響，使結(jié)構(gòu)整體和局部受到不同程度的損壞。對(duì)已建鋼結(jié)構(gòu)鑒定時(shí)，檢查鋼結(jié)構(gòu)材質(zhì)是很重要的測(cè)定內(nèi)容。河南科技， 2020，（ 8） [4]艾思平。電測(cè)法就是利用電學(xué)量（如電流、電阻、電容等）的變化及其電學(xué)變化量與力學(xué)量之關(guān)系來(lái)測(cè)定其力學(xué)量（如應(yīng)變及其應(yīng)力）；其測(cè)定的范圍有靜態(tài)和動(dòng)態(tài)兩種。如角鋼、電線等，此時(shí)必須在兩端墊支點(diǎn)，以使鋼絲拉直。即儀器顯示的厚度值。 關(guān)鍵詞： 鋼結(jié)構(gòu)檢測(cè)；鋼結(jié)構(gòu)材料；質(zhì)量檢測(cè)；質(zhì)量評(píng)定 鋼結(jié)構(gòu)檢測(cè)在提升單項(xiàng)檢測(cè)技術(shù)的同時(shí)，注重發(fā)展和實(shí)現(xiàn)專業(yè)間的一體化，完善了成套的鋼結(jié)構(gòu)檢測(cè)技術(shù)，包括鋼材力學(xué)性能檢測(cè)（拉伸、彎曲、沖擊、硬度）、鋼結(jié)構(gòu)緊固件力學(xué)性能檢測(cè)（抗滑移系數(shù)、軸力）、鋼材金相檢測(cè)分析（顯微組織分析、顯微硬度測(cè)試）、鋼材化學(xué)成分分析、鋼結(jié)構(gòu)無(wú)損檢測(cè)、鋼結(jié)構(gòu)應(yīng)力測(cè)試和監(jiān)控、涂料檢測(cè)等成套檢測(cè)技術(shù)。 Welding ball is must be the diameter of the pipe welding according to the standard, then the tensile pressive tests are carried out。 (1)用測(cè)厚儀測(cè)定鋼結(jié)構(gòu)截面厚度 鋼結(jié)構(gòu)由于加工精確程度和斷面銹蝕的影響，鋼結(jié)構(gòu)斷面厚度往往有些變化。 (3)鋼結(jié)構(gòu)屋架撓度的測(cè)定 鋼屋架一般跨度都較大，如 2 2 30m 等，測(cè)量撓度較困難，必須用很大的力把鋼絲拉緊，而且鋼絲要求具有一定的抗拉強(qiáng)度。必須查明鋼材牌號(hào)、技術(shù)指標(biāo)、極限強(qiáng)度、屈服強(qiáng)度、受拉時(shí)的延伸率、冷變、反復(fù)彎曲、沖擊韌性與化學(xué)成分等。所謂焊縫無(wú)損檢測(cè)，就是為了判定焊接結(jié)構(gòu)或焊件在成型后能否滿足使用要求，在不進(jìn)行大面積破壞性試驗(yàn)的情況下對(duì)焊縫進(jìn)行檢測(cè)的技 術(shù)。北京某景觀橋鋼結(jié)構(gòu)的檢測(cè)鑒定與加固設(shè)計(jì) [J]。 (2)鋼結(jié)構(gòu)構(gòu)件變形檢驗(yàn)與評(píng)定 鋼結(jié)構(gòu)的最后綜合評(píng)定是由承載能力、變形、銹蝕、損傷四個(gè)方面進(jìn)行綜合考慮和分析，并以承載能力為主給出等級(jí)。同時(shí)，最好有竣工記錄，原鋼屋架在施工后有否反拱或撓度值。因此，測(cè)定鋼結(jié)構(gòu)截面厚度是非常重要的一項(xiàng)任務(wù)。 Connection fasteners, mainly is the high strength bolts for us. High strength bolt mainly control the quality of the project including the minimum load detection, pretension the reinspection, torque, the reinspection torque coefficient and coefficient of slip resistance test. Steel material mechanical test and chemical analysis results, should ply with the provisions of the corresponding procedures. B, steel structure detection (a) steel structure thickness of section is measured by thickness gauge Steel structure because of the influence of the processing accuracy and section of corrosion, the steel structure of the section thickness is often some changes. Especially corrosion section thinning, bearing capacity decreased, the structure safety degree of influence is very big. Therefore, thickness of section steel structure determination is an important task. At present, the thickness measurement is a kind of caliper, one is thickness is measured by thickness gauge. Described below using ultrasonic thickness gauge Numbers of cross section thickness measuring method. The ultrasonic pulse reflection method. Ultrasonic spread from a homogeneous medium to another kind of homogeneous medium, boundary will occur on the surface of acoustic reflection, from the launch of the ultrasonic probe, after a delay block into the piece under test, ultrasonic wave arrived at interface, and be reflected back, be received through delay block and probe receives, measured between the transmitted pulse to the received pulse time, deduct the delay time, according to the relationship between sound velocity, time, distance, and the thickness of the piece being tested. That is, the thickness of the instrument display values. Such as ~ 100 instrument shows a value of mm, mm, the accuracy is mm. (2) the steel structure coating thickness measurement And in identificatio