CN-121976666-A - Construction method suitable for steel pipe concrete inclined column and tower crane wall attachment node

CN121976666ACN 121976666 ACN121976666 ACN 121976666ACN-121976666-A

Abstract

The invention belongs to the field of constructional engineering, and provides a construction method suitable for a concrete filled steel tube inclined column and a tower crane wall attachment node, which comprises the following steps of S1, positioning an installation area of an ear plate support; S2, welding an ear plate support, wherein S3, three attaching support rods are movably hinged to the ear plate support through pin shafts, S4, three attaching support rods are radially arranged on the same horizontal plane, S5, a universal pin shaft is hinged to the ear plate support, S6, a hydraulic adjusting bolt is arranged, S7, the perpendicularity of a tower body is measured, and S8, inspection is carried out. Compared with the prior art, the invention has the advantages that the arc-shaped lug plate support can be flexibly matched according to the actual diameter of the steel tube concrete column, the adaptation flexibility is improved, the invention is suitable for various super high-rise building outer frame structural forms, meanwhile, the attachment support rod is hinged with the lug plate support by adopting a universal pin shaft, and the three-dimensional adjustable inner support system is formed by matching with a hydraulic fine adjustment bolt, so that the wall attaching device is tightly attached to the main chord member of the tower body, and the installation precision and the stress uniformity are obviously improved.

Inventors

ZHANG WEIGUANG
HU YANG
YU YANXIN
CHENG XIAOWEI
WANG XINGCHENG

Assignees

浙江二十冶建设有限公司
中国二十冶集团有限公司

Dates

Publication Date: 20260505
Application Date: 20251229

Claims (10)

1. The construction method suitable for the steel tube concrete inclined column and tower crane wall attachment node is characterized by comprising the following steps: S1, carrying out laser scanning on the surface of a concrete filled steel tube diagonal column on which a wall-attached node is to be installed, positioning the installation area of an ear plate support, and polishing to remove burrs and burrs; S2, customizing an arc-shaped lug support according to measured data, enabling the inner arc radius of the lug support to be matched with the outer wall of a concrete filled steel tube inclined column at a corresponding position, welding the lug support on the concrete filled steel tube inclined column, and ensuring that the plane of the lug support is perpendicular to the axial lead of the column; S3, sleeving the attaching frame at the designated height of the tower crane, and movably and hingedly connecting the attaching frame to the ear plate support by utilizing three attaching support rods through pin shafts; s4, one ends of three attaching support rods are respectively and movably hinged to an attaching frame sleeved on a designated section of the tower body of the tower crane through pin shafts, and the three attaching support rods are radially arranged on the same horizontal plane or have a certain height difference; S5, the other ends of the three attachment support rods are hinged with lug plate supports installed on the steel pipe concrete diagonal columns through universal pin shafts respectively, and the universal pin shafts allow the attachment support rods to swing around any direction so as to adapt to the inclination angles and installation errors of the diagonal columns; S6, arranging hydraulic adjusting bolts at the ends, close to the concrete filled steel tube diagonal columns, of each attaching support rod, and enabling each attaching support rod to uniformly bear force and prop against the tower crane by synchronously adjusting the lengths of the three attaching support rods so as to form a three-dimensional self-adaptive internal support system; S7, when the step S4 and the step S5 are implemented, the high-precision theodolite or the total station is used for retesting the verticality of the tower body, and meanwhile, the hydraulic adjusting bolt in the step S6 is allowed to be finely tuned again until the standard requirement is met; And S8, after adjustment is completed, cotter pin locking devices are additionally arranged at the end parts of all the pin shafts, and the cotter pin locking devices are jointly checked and accepted by a construction unit and a third party detection mechanism, so that the welding seam quality is confirmed to be in accordance with the standard and then the cotter pin locking devices can be put into use.
2. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment joint according to claim 1, wherein in the step S5, the hinging mode of the universal pin shaft allows the swinging angle of the three attachment support rods relative to the lug plate support to be +/-15 degrees.
3. A construction method for a concrete filled steel tube diagonal column and tower crane wall attachment node according to claim 1, wherein in step S2 and step S5, the lug plate support can be welded by adopting a post-welding drilling process or a universal pin shaft after passing through the lug plate support.
4. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment joint according to claim 2, wherein in the step S6, the adjustment precision of the hydraulic adjusting bolt is +/-2 mm.
5. The construction method for the concrete-filled steel tube diagonal column and tower crane wall attachment joint according to claim 2, wherein in the step S4, the lug plate support is fixed on the surface of the concrete-filled steel tube diagonal column through bonding steel plates in a full-welded mode, and the attachment support rods are connected through 8.8-stage high-strength bolts.
6. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment node according to claim 5, wherein in the step S2, all welding seams during the welding of the lug plates are continuous fillet welding seams, and the interlayer temperature is controlled to be less than or equal to 120 ℃ in the welding process.
7. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment node according to claim 1, wherein in step S7, deviation of the perpendicularity of the tower body is required to be controlled within a range of 2/1000.
8. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment joint according to claim 6, wherein in the step S2, when the lug plate support is welded with the concrete filled steel tube diagonal column, the perpendicularity of the plane on the lug plate support and the axis of the diagonal column is less than or equal to 2 per mill of the length to be measured.
9. The construction method for the concrete filled steel tube diagonal column and tower crane wall attachment node according to claim 6, wherein in the step S8, the cotter pin is opened according to the specification, whether loosening occurs is checked frequently after operation, and corresponding adjustment is performed according to actual conditions.
10. A construction method suitable for concrete filled steel tube diagonal columns and tower crane wall attachment nodes according to claim 1, wherein the ear plate support can be changed between 600mm and 1200mm in diameter to adapt to the section change of the concrete filled steel tube columns.

Description

Construction method suitable for steel pipe concrete inclined column and tower crane wall attachment node Technical Field The invention belongs to the field of constructional engineering, and particularly relates to a construction method suitable for a concrete filled steel tube inclined column and a tower crane wall-attached node. Background In super high-rise building engineering, a tower crane (referred to as a tower crane for short) is used as a key vertical transportation and component hoisting device, and the safety, stability and adaptability of an attachment system of the tower crane are directly related to the smooth propulsion of the whole construction process. At present, a tower crane wall-attached mainly depends on a building main structure to provide an anchoring fulcrum, wherein a core tube attaching mode anchors a tower crane wall-attached node on a reinforced concrete core tube wall body, and the tower crane wall-attached node is widely used for a long time due to high structural rigidity, regular plane and convenience in arranging embedded parts. However, in modern super high-rise buildings, in order to meet the requirements of building functional layout, facade modeling or external frame anti-side system, tower cranes are often arranged at the periphery of the building, resulting in a significant increase of the horizontal distance between the tower crane and the core tube. When the distance exceeds the design span (usually 5-6 m) of a standard wall-attached stay bar, an lengthened wall-attached stay bar (the length can reach 8-12 m or even longer) is required, and the lengthened stay bar has obvious defects that on one hand, the bending rigidity of the lengthened stay bar decays along with the third power of the span (delta is L 3), the excessive deflection is easily generated under the action of wind load or tower crane running inertia to weaken the overall stability of the tower body, and on the other hand, diagonal braces, trusses or temporary support systems are required to be additionally arranged in the middle of the stay bar for controlling deformation, so that the steel consumption and overhead welding workload are greatly increased, the construction period is prolonged, the cost is increased, and additional safety risks are brought. In addition, the wall-attached embedded part needs to be precisely matched with the core tube hydraulic climbing formwork system, once the tower crane is positioned and adjusted, the whole core tube construction rhythm is pulled, and the coordination difficulty is high. Therefore, when facing the dual challenges of a remote core tube and a variable-section concrete filled steel tube diagonal column commonly existing in super high-rise buildings, the conventional tower crane wall attaching technology exposes systematic defects of insufficient rigidity, poor adaptability, complex construction, low safety and the like, and finally cannot adapt to different column diameters, compatible space inclination angles and high-precision adjustment capability. Disclosure of Invention The invention aims to solve the problems in the prior art, and provides a construction method which has the advantages of simple structure, good stability, strong adaptability and capability of improving the installation precision and stress uniformity and is suitable for the wall-attached node of the steel pipe concrete inclined column and the tower crane. The invention aims at solving the following technical problems, and provides a construction method suitable for a concrete filled steel tube inclined column and a tower crane wall-attached node, which comprises the following steps: S1, carrying out laser scanning on the surface of a concrete filled steel tube diagonal column on which a wall-attached node is to be installed, positioning the installation area of an ear plate support, and polishing to remove burrs and burrs; S2, customizing an arc-shaped lug support according to measured data, enabling the inner arc radius of the lug support to be matched with the outer wall of a concrete filled steel tube inclined column at a corresponding position, welding the lug support on the concrete filled steel tube inclined column, and ensuring that the plane of the lug support is perpendicular to the axial lead of the column; S3, sleeving the attaching frame at the designated height of the tower crane, and movably and hingedly connecting the attaching frame to the ear plate support by utilizing three attaching support rods through pin shafts; s4, one ends of three attaching support rods are respectively and movably hinged to an attaching frame sleeved on a designated section of the tower body of the tower crane through pin shafts, and the three attaching support rods are radially arranged on the same horizontal plane or have a certain height difference; S5, the other ends of the three attachment support rods are hinged with lug plate supports installed on the steel pipe concrete diagonal co