钢柱的吊装采用人工抬升辅助就位，构件就位后采用单机旋转发吊装，为提高吊

The lifting of the steel column is assisted by manual lifting. After the components are in place, a single machine is used to rotate and lift. In order to improve the lifting efficiency, when stacking the columns, try to make the three points of the column binding point, the binding center and the base center. <br>The lifting sling used when lifting the steel column is a 2.5-ton tension-resistant sling with shackle lifting. When the steel column is laid flat on the ground, the sling is tied to the bottom of the steel column more than 2/3, and placed on the steel column connection plate Or under the shank, when the steel column is upright, the sling depends on the connecting plate or shank of the steel column for effective contact and friction to ensure the stability of the steel column. When the sling is tied to the steel column with a shackle, it is in the shackle At the same time wear a hemp rope as a slip rope. <br>In order to protect the steel column itself and the paint from being damaged during hoisting, the four corners of the H-shaped steel are lined with soft materials when strapping. <br>When lifting, the crane will slowly lift the tied column 20cm off the ground and pause, check the stability of the sling and crane, and then boo the steel column to 40-100mm from the safety surface. The steel column is assisted by the installation worker and aligned with the column The foot anchor bolt directs the crane to descend, insert the column into the column foot anchor bolt, and then tighten the anchor bolt, and after the initial correction of the steel column, the sling is slowly loosened. <br>The method of lifting and unhooking the steel column is as follows: After the steel column is adjusted to the verticality and the stability of the steel column is guaranteed, the crane is slightly lowered and loosened, and the steel column is checked for instability. If the steel column is upright and stable, the square The crane can be loosened. After loosening, the construction personnel shakes the hemp rope connected to the shackle within the safe range to loosen the sling. After loosening, the sling slides down, and then slides to the ground to remove. <br>Steel column installation correction After the <br>steel column is installed, it is corrected immediately. The vertical correction of the steel column is measured with a 5M long-line hammer placed on the vertical and horizontal axes, and the square meter is used to measure whether it is vertical. <br>In actual work, the columns of rows are often erected, and then corrected. The deviation from the center line should generally not be greater than 5mm. <br>When lifting steel beams or installing vertical members, the steel columns must also be reviewed and corrected. <br>When the steel beam is hoisted <br>, the crane adopts two 2 tons of slings, and the lashing point is that the opening angle of the two slings is not more than 60 degrees. <br>The lashing points are cushioned with soft materials to prevent damage to the steel members.<br>When lifting, first suspend the steel beam about 50cm from the ground, pause, and after confirming the safety, slowly lift the hook, hang the steel beam above the height of the installation position, and then use the rope to rotate the steel beam to align with the connecting plate, so that the hook will fall When the hook is dropped, proceed slowly, and install bolt holes in the steel beam, align the reserved bolt holes, and insert the bolts into it.

The suspension of the steel column adopts the artificial lifting assist in place, the component in place adopts the single-machine rotary hair lifting, in order to improve the lifting efficiency, in the stacking of the column, as far as possible to make the column tie point, tie center and the base center three points of the common arc.<br>The suspension used in the suspension of the steel column is an anti-pull 2.5-ton sling with a lifting suspension, when the steel column is flat on the ground, the sling is tied to the bottom surface of the steel column more than 2/3 position, and placed under the steel column connection plate or cow leg When the steel column is erect, the sling relies on the connection plate of the steel column or the effective contact and friction of the cow leg to ensure the stability of the steel column upright, when the sling is tied with the steel column with the buckle, wearing a hemp rope in the unloading buckle at the same time, as a rope.<br>In order to protect the steel column itself and the paint from being damaged when lifting, a soft material pad is used in the four corners of the H-type steel when the sling is strapped.<br>Lifting the crane will be tied to the post slowly lifted off the ground 20CM after the suspension, check the sling and crane stability, and then the steel column booed up to the safety surface 40-100mm, by the installer to assist the steel column, aligned with the column foot anchor, command crane drop, insert the column into the column foot anchor, then the anchor bolt tightened, and the steel column after preliminary correction, the sling slowly loosened.<br>The steel column lifting hook method is as follows: when the steel column adjusts the verticality and ensures the stability of the steel column, the crane first slightly lowers and releases, while checking whether the steel column is insecure, if the steel column is stable upright and stable, can the crane release, release after the construction personnel in the safe range to shake and release the buckle connected hemp rope, so that the suspension belt, loosen the suspension after the slide, slide down to the ground after removal.<br>Steel column installation correction<br>The steel column is corrected immediately after installation, the vertical correction of the steel column is corrected, the measurement is placed on the horizontal axis with a 5M long-line hammer, and the verticality is measured in a straight line with a angle ruler.<br>In practice, often lined columns are erected, and then corrected, deviation from the middle line generally not more than 5mm.<br>When lifting steel beams or when installing vertical components, the steel columns must also be reviewed for correction.<br>Steel beam lifting<br>When lifting the crane using two 2 tons sling lifting, tie point for the two slings open angle is not greater than 60 degrees is appropriate.<br>The tie point is cushioned with a soft material to prevent damage to the steel components.<br>Lifting the first steel beam hanging from the ground about 50cm when suspended, confirm the safety of the slowly rising hook, the steel beam to the installation position height above, and then use the rope to rotate the steel beam to make it aligned to the connection plate, so that the hook in place, the hook slowly, and the steel beam bolt hole, align editing bolt hole, and bolt into it.

The hoisting of steel column is assisted by manual lifting. After the components are in place, they are hoisted by single machine rotary generator. In order to improve the hoisting efficiency, when stacking the columns, try to make the binding point, binding center and Foundation Center of the columns arc together.<br>When the steel column is hoisted, the sling with tensile force of 2.5t shall be used together with shackle for hoisting. When the steel column is placed on the ground, the sling shall be tied at the position where the bottom surface of the steel column exceeds 2 / 3 and placed under the steel column connecting plate or bracket. When the steel column is upright, the sling shall rely on the connecting plate or bracket of the steel column for effective contact and friction to ensure the vertical stability of the steel column. When the sling is tied with the steel column with shackle After binding, wear a hemp rope in the shackle at the same time as the slip rope.<br>In order to protect the steel column itself and the paint from being damaged during hoisting, soft material liner is used at four corners of H-shaped steel when strapping the sling.<br>During hoisting, the crane slowly hoists the bound column 20cm from the ground, then suspends, checks the stability of the sling and crane, and then hiss the steel column to 40-100mm from the safety. The installation worker assists the steel column, aligns with the anchor bolt of the column base, commands the crane to descend, inserts the column into the anchor bolt of the column base, and then tighten the anchor bolt. After the initial correction of the steel column, the sling is slowly released.<br>The lifting and uncoupling method of steel column is as follows: when the verticality of steel column is adjusted and the stability of steel column is ensured, the crane shall be slightly lowered and loosened, and check whether the steel column is unstable at the same time. If the vertical stability of steel column is good, the crane can be loosened. After loosening, the construction personnel shall swing the hemp rope connected with the shackle within the safety range to loosen the sling. After loosening, the sling will slide down to the ground After removal.<br>Steel column installation and correction<br>After the steel column is installed, it shall be corrected immediately. For the vertical correction of the steel column, a 5m long plumb bob shall be used to measure whether it is vertical or not on the vertical and horizontal axis.<br>In practical work, the columns in rows are often erected and then corrected, and the deviation from the center line is generally not more than 5mm.<br>When hoisting steel beams or installing vertical members, steel columns shall be rechecked and corrected.<br>Steel beam hoisting<br>When hoisting, the crane adopts two 2T slings, and the binding point is that the opening angle of the two slings is no more than 60 degrees.<br>The binding points shall be padded with soft materials to prevent damage to the steel components.<br>When lifting, the steel beam shall be suspended when it is about 50cm away from the ground. After confirming the safety, the hook shall be lifted slowly. The steel beam shall be lifted to the height above the installation position, and then the steel beam shall be rotated by the sliding rope to align with the connecting plate to make the hook fall in place. The hook shall be lowered slowly. The bolt hole shall be installed in the steel beam, and the bolt hole shall be reserved for alignment, and the bolt shall be penetrated into it.<br>