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The Quality Control Of Steel Structure Workshop Installation Process

Apr 10, 2017

Steel structure workshop workshop before the installation, we need to do the preliminary work.Before such as hoisting, installation personnel retest should be made for member only if the component is not deformation right can only be carried out under the premise of hoisting and installation size.In addition, the installation personnel in the condition that the foundation concrete strength meet the specification requirements, also deal with steel column base of embedded bolts or tested at the top, if discover the location of the base and the elevation dimension deviation, should make records for the parts, in order to adjust the position of steel column.

In order to improve the installation precision of the whole steel structure workshop, had better choose between workshop of column support, part of the tie bar and roof support for installation first.After this part of the steel column hoisting, should first to retest the axis of the steel column and elevation after rectifying temporarily use cable wind rope brace steel column, to install the column support, roof beam and beam between tie bar, this is the so-called rough installation.Roof beam before the installation, should be assembled on the ground and the measurement of qualified before lifting.After beam in place, with high strength bolt connection, other parts with corresponding bolt, but should not be all kinds of bolt locking.Parts after fixation on steel column axis and elevation again reiteration and rectifying, namely fine-tuning.Direction of the axis of the steel column should be two repetition, repetition measurement of qualified, and, in turn, tighten all parts of the bolt.To early high strength bolts should first twist, in the process of tighten, deal with the axis of the steel column for dynamic tracking, such as axis changes more than permitted, should immediately.The whole process should be tighten beam-column junction, to support, the tie bar contacts, to adopt the method of symmetry on both ends of the same parts at the same time, to reduce the unilateral cumulative error.In this way can we ensure that the steel column installed correctly.If found in the process, the installation and be installed parts don't match, cannot adjust be installed, but adjust the installation or other remedy measures.For example: the steel beams and steel columns do not match, cannot adjust steel column, can only adjust the steel beam.In the process of the whole shelf installation, steel column installed correctly is necessary for all other installed correctly.

In the process of steel structure workshop workshop installation, separate bent part should form a stable structure as soon as possible.Through the above method, can install several other parts, respectively, in turn, makes the stability of the workshop first interval in bent frame structure, so that you can install the whole factory produced when the cumulative error of dispersed to each part, also can avoid because of natural conditions, deformation has been installed steel components fall off or even overthrow, etc.Between the other's bent steel columns, steel beam, when installation should be independent measurement and correction, but not on the shelf next to the benchmark.In the whole process of the main structure installation, local bent frame structure in place and after rectifying, shall make final twist of high strength bolt, screw torque values must conform to the requirements of the specification, the inspectors shall be sampling measure and record.

All the required on site temporary fixed bolt hole, welding parts should be designed to grow shaped hole, so convenient in installation and adjustment, to ensure that the overall installation precision is more advantageous.Purlin order component of unilateral connecting hole, and appropriate design type hole growth, of course related gasket also increases accordingly.Is important to pay special attention to, because both purlin installation are aerial work, with thin wooden partition, if because of mounting holes appear deviation and cutting spraying high in the sky, does bring a lot of inconvenience, can also be dangerous, and the appearance may also be affected.