A kind of steel beam hoisting construction method and auxiliary device

Abstract

The present invention discloses a method and auxiliary device for hoisting a steel beam, the method comprising: welding a limiting structure at the end of a horizontal beam section of a steel column; rotatably installing a node plate with screw holes at both ends of at least one side of the steel beam; welding at least one pair of yard plates at the top of each end of the steel beam, and hoisting the steel beam; rotating the node plate, fixing the steel beam and the horizontal beam section with high-strength bolts, cutting a second side steel plate at the lower flange of the steel beam, and spot-welding the steel plate to the upper flange of the steel beam; welding the weld of the lower flange of the steel beam; welding the weld of the upper flange of the steel beam, and cutting the yard plates. The present invention is rotatably connected to the steel beam through the node plate, and at the same time, a limiting structure is welded at the end of the horizontal beam section of the steel column, and yard plates are welded at both ends of the steel beam to assist the steel beam in positioning, fixing and welding. The operation is simple, and the workload of the operators is reduced. The construction is safer and faster, and has obvious economic benefits.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure hoisting construction, and in particular to a steel beam hoisting construction method and an auxiliary device. Background Art

[0002] With the rapid development of social economy, my country's steel production capacity has been continuously improved, and the proportion of steel structure in building structure has been increasing. Among them, the most widely used steel structure is steel frame structure. Steel frame structure (such as I-shaped steel beam) is mostly hoisted by a single component of a crane, and different components are connected by bolting and welding. During the construction process, the node plate of the beam-column node will be pre-connected to the beam with high-strength bolts. After the steel beam is in place, the bolts and connection plates are removed, and then the beam and column are connected together with bolts and node plates. Finally, the bolts are adjusted and tightened before welding.

[0003] The existing construction method has the following defects: first, there is a risk of node plates and bolts falling from high altitudes, and the workload of installing and disassembling the node plates is large; second, when the steel beams are large and heavy, it is difficult to accurately position the steel beams; third, it is difficult to operate the arc-starting plate at high altitudes, the construction is inconvenient, and there are certain safety hazards.

[0004] In view of this, the inventors have improved the current steel beam hoisting construction method and proposed a steel beam hoisting construction method which is faster, safer and requires less workload. Summary of the invention

[0005] One of the purposes of the present invention is to provide a method for lifting and constructing a steel beam, which is rotatably connected to the steel beam through a node plate, and at the same time, a limiting structure is welded at the end of the horizontal beam section of the steel column, and code plates are welded at both ends of the steel beam to assist the steel beam in positioning, fixing and welding. The operation is simple and reduces the workload of operators. At the same time, the construction is safer and faster, and has obvious economic benefits.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A steel beam hoisting construction method comprises the following steps:

[0008] Step 1: Weld a limiting structure at the end of the horizontal beam section of the steel column, wherein the limiting structure is a steel plate structure and partially protrudes from the end of the horizontal beam section, and the limiting structure includes a groove portion and a guiding portion for guiding the steel beam to the groove portion;

[0009] Step 2, rotatably installing a node plate with screw holes at both ends of at least one side of the steel beam;

[0010] Step 3: After checking the coordinates of the anchor bolts of the steel column, install the elevation nuts and hoist the steel column into place;

[0011] Step 4: Weld at least one pair of yard plates at the top of both ends of the steel beam;

[0012] Step 5, hoisting the steel beam: make the end of the steel beam enter the groove part along the guide part and dock with the end of the horizontal beam section, cut the steel plate belonging to the groove part on the first side at the lower flange of the steel beam, and hoist the cut steel plate to the ground, wherein the first side is the side for installing the node plate;

[0013] Step 6: Rotate the node plate so that its screw holes correspond to the screw holes of the beam column and the screw holes of the steel beam respectively, and fix the steel beam and the beam column with the node plate through high-strength bolts;

[0014] Step 7, cutting a second side steel plate at the lower flange of the steel beam, and fixing the steel plate to the upper flange of the steel beam by spot welding, wherein the second side is the side where the node plate is not installed;

[0015] Step 8, welding the lower flange weld of the steel beam;

[0016] Step 9, welding the upper flange weld of the steel beam in step 7, and the steel plate located at the bottom of the groove portion serves as an arc starter plate for welding the first side weld;

[0017] Step 10: Weld the web weld and cut the code plate.

[0018] Furthermore, the groove portion is composed of a bottom plate and two side plates, and the guide portion includes two inclined steel plates, and the two inclined steel plates are combined to form an open structure.

[0019] Furthermore, the node plate is rotatably connected to the steel beam via a rotating pin.

[0020] Furthermore, half of the limiting structure in step 1 is welded to the end of the horizontal beam section, and the other half of the limiting structure protrudes from the end of the horizontal beam section.

[0021] Furthermore, in step 7, the step of spot welding the steel plate to the upper flange of the steel beam specifically comprises: spot welding the steel plate at the connection between the groove portion and the guide portion of the limiting structure to the upper flange of the steel beam.

[0022] The second object of the present invention is to provide an auxiliary device for the lifting construction of a steel beam, which includes a limiting structure, a node plate, and a yard plate. The limiting structure is a steel plate structure, a part of which is welded to the end of the horizontal beam section of the steel column, and the other part protrudes from the end of the horizontal beam section. The limiting structure includes a groove part and a guiding part for guiding the steel beam to the groove part; the node plate is rotatably installed on at least one side of the steel beam; the yard plate is welded to the top of both ends of the steel beam, with at least one pair at each end.

[0023] Furthermore, the groove portion is composed of a bottom plate and two side plates, and the guide portion includes two inclined steel plates, and the two steel plates form an open structure.

[0024] Furthermore, the node plate is rotatably connected to the steel beam via a rotating pin.

[0025] Furthermore, one half of the limiting structure is welded to the end of the horizontal beam section, and the other half of the limiting structure protrudes from the end of the horizontal beam section.

[0026] After adopting the above scheme, the present invention has the following beneficial effects:

[0027] 1. The limiting structure of the present invention includes a groove part and a guide part. The guide part can play a limiting role (preventing the upward and downward deviation and the deviation perpendicular to the beam column plane) during the positioning and construction of the steel beam. The groove part has the function of bearing the vertical load. After the groove part is cut, its bottom can also be used as an arc starter plate for welding the lower flange of the steel beam, thereby improving the construction safety factor and construction efficiency while reducing the amount of high-altitude operations.

[0028] 2. A node plate with screw holes can be rotatably installed at both ends of at least one side of the steel beam, making the connection of the node plate more convenient, avoiding the disassembly and assembly of bolts and node plates at high altitude, reducing the risk of high-altitude operations and high-altitude object strikes, and improving construction efficiency;

[0029] 3. While assisting in positioning, the deck can also bear a large vertical load, further improving the safety factor of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the overall structural diagram after the steel beam is hoisted and installed;

[0031] Figure 2 It is a schematic diagram of the welding structure of the limiting structure;

[0032] Figure 3 for Figure 2 AA direction profile;

[0033] Figure 4 This is a schematic diagram of the structure for hoisting the steel beam into place;

[0034] Figure 5 for Figure 4 BB direction profile;

[0035] Figure 6 This is a schematic diagram of the node plate in place and the lower flange welding;

[0036] Figure 7 for Figure 6 CC direction cross-section diagram.

[0037] Description of labels:

[0038] Steel beam 1, steel column 2, horizontal beam section 21, node plate 3, high-strength bolt 4, limiting structure 5, groove part 51, guide part 52, rotating pin 6, code plate 7, arc-starting plate 8. DETAILED DESCRIPTION

[0039] like Figure 1-7 As shown, the present invention discloses a steel beam hoisting construction method, which comprises the following steps:

[0040] Step 1: See Figure 2-3 As shown, a limiting structure 5 is welded at the end of the horizontal beam section 21 of the steel column 2. The limiting structure 5 is a steel plate structure and partially protrudes from the end of the horizontal beam section 21. The limiting structure 5 includes a groove portion 51 and a guide portion 52 for guiding the steel beam 1 to the groove portion 51. The purpose of this step is to first weld the limiting structure 5 to the end position of the horizontal beam section 21 of the steel column 2 to prepare for hoisting the steel beam. The groove portion 51 of the limiting structure 5 has a vertical load function, and the guide portion 52 prevents the steel beam from deviating up and down and perpendicular to the beam-column plane during the hoisting construction process, and can play a limiting role during the placement and construction of the steel beam.

[0041] Step 2: See Figure 4 As shown, a node plate 3 with screw holes is rotatably installed at both ends of at least one side of the steel beam 1. In this embodiment, the node plate 3 is preferably rotatably connected to the steel beam 1 through a rotating pin 6. The rotating node plate 3 is more convenient to connect, avoiding high-altitude disassembly and assembly of bolts and node plates, reducing the risk of high-altitude operations and high-altitude object strikes, and thus the construction efficiency is higher;

[0042] Step 3: After checking the coordinates of the anchor bolts of the steel column 2, install the elevation nuts and hoist the steel column 2 into place;

[0043] Step 4, welding at least one pair of yard plates 7 at the top of both ends of the steel beam 1;

[0044] Step 5: See Figure 4-5 As shown, hoist the steel beam 1: make the end of the steel beam 1 enter the groove portion 51 along the guide portion 52 and dock with the end of the horizontal beam section, cut the steel plate belonging to the groove portion 51 on the first side at the lower flange of the steel beam 1, and hoist the cut steel plate to the ground, wherein the first side is the side for installing the node plate 3;

[0045] Step 6: See Figure 6 As shown, the node plate 3 is rotated to make its screw holes correspond to the screw holes of the beam column and the screw holes of the steel beam 1 respectively, and the steel beam 1 and the beam column are fixedly connected by the high-strength bolts 4 in conjunction with the node plate 3, and the high-strength bolts 4 are adjusted and fixed;

[0046] Step 7, see Figure 7 As shown, a second side steel plate is cut at the lower flange of the steel beam 1, and the steel plate is spot welded and fixed to the upper flange of the steel beam 1, wherein the second side is the side where the node plate 3 is not installed;

[0047] Step 8, welding the lower flange weld of the steel beam 1;

[0048] Step 9, welding the upper flange weld of the steel beam 1 in step 7, and the steel plate located at the bottom of the groove portion 51 is used as the arc starter plate 8 for welding the first side weld;

[0049] Step 10: Weld the web weld and cut the code plate 7.

[0050] As a further preferred embodiment, the groove portion 51 is composed of a bottom plate and two side plates, and the guide portion 52 includes two inclined steel plates, which are combined to form an open structure. The groove portion 51 and the guide portion 52 can be integrally formed or formed by welding multiple steel plates.

[0051] As a further preferred embodiment, half of the limiting structure 5 in step 1 is welded to the end of the horizontal beam section 21, and the other half of the limiting structure 5 protrudes from the end of the horizontal beam section 21. This embodiment divides the limiting structure 5 into two parts of equal length, which are respectively connected to the horizontal beam section 21 and the steel beam 1 to ensure force balance.

[0052] As a further preferred embodiment, in step 7, the spot welding and fixing of the steel plate to the upper flange of the steel beam 1 is specifically: spot welding and fixing the steel plate at the connection between the groove portion 51 and the guide portion 52 of the limiting structure 5 to the upper flange of the steel beam 1.

[0053] Compared with the existing technical solutions, the steel beam hoisting construction method of the present invention has the following advantages:

[0054] 1. Before the hoisting construction, the present invention installs a limiting structure 5 on the steel beam 1. The limiting structure 5 includes a groove portion 51 and a guide portion 52. The guide portion 52 can play a limiting role (preventing the upward and downward deviation and the deviation perpendicular to the beam column plane) during the installation and construction of the steel beam 1. The groove portion 51 has a vertical load function. After the groove portion 51 is cut, its bottom can also be used as an arc-starting plate 8 for welding the lower flange of the steel beam 1, thereby improving the construction safety factor and construction efficiency while reducing the amount of high-altitude operations;

[0055] 2. A node plate 3 with screw holes is rotatably installed at both ends of at least one side of the steel beam 1, so that the connection of the node plate 3 is more convenient, and the high-altitude disassembly and assembly of the bolts and the node plate 3 is avoided, the risk of high-altitude operations and high-altitude object strikes is reduced, and the construction efficiency is higher;

[0056] 3. While assisting in positioning, the deck plate 7 can bear a large vertical load, further improving the safety factor of construction.

[0057] The present invention also discloses a steel beam hoisting construction auxiliary device, which can be applied to the above-mentioned steel beam hoisting construction method. The device includes a limiting structure 5, a node plate 3, and a code plate 7. The limiting structure 5 is a steel plate structure, a part of which is welded to the end of the horizontal beam section 21 of the steel column 2, and the other part protrudes from the end of the horizontal beam section 21. The limiting structure 5 includes a groove portion 51 and a guiding portion 52 for guiding the steel beam 1 to the groove portion 51; the node plate 3 is rotatably installed on at least one side of the steel beam 1; the code plate 7 is welded to the top of both ends of the steel beam, with at least one pair at each end.

[0058] As a further preferred embodiment, the groove portion 51 is composed of a bottom plate and two side plates, and the guide portion 52 includes two inclined steel plates, which are combined to form an open structure. The groove portion 51 and the guide portion 52 can be integrally formed or formed by welding multiple steel plates.

[0059] As a further preferred embodiment, half of the limiting structure 5 in step 1 is welded to the end of the horizontal beam section 21, and the other half of the limiting structure 5 protrudes from the end of the horizontal beam section 21. This embodiment divides the limiting structure 5 into two parts of equal length, which are respectively connected to the horizontal beam section 21 and the steel beam 1 to ensure force balance.

[0060] As a further preferred embodiment, in step 7, the spot welding and fixing of the steel plate to the upper flange of the steel beam 1 is specifically: spot welding and fixing the steel plate at the connection between the groove portion 51 and the guide portion 52 of the limiting structure 5 to the upper flange of the steel beam 1.

[0061] The above description is only an implementation example of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for hoisting a steel beam, characterized in that The following steps are involved: Step 1: Weld a limiting structure at the end of the horizontal beam section of the steel column, wherein the limiting structure is a steel plate structure and partially protrudes from the end of the horizontal beam section, and the limiting structure includes a groove portion and a guiding portion for guiding the steel beam to the groove portion; The groove portion is composed of a bottom plate and two side plates, and the guide portion includes two inclined steel plates, which are combined to form an open structure; In step 1, half of the limiting structure is welded to the end of the horizontal beam section, and the other half of the limiting structure protrudes from the end of the horizontal beam section; Step 2, rotatably installing a node plate with screw holes at both ends of at least one side of the steel beam; Step 3: After checking the coordinates of the anchor bolts of the steel column, install the elevation nuts and hoist the steel column into place; Step 4: Weld at least one pair of yard plates at the top of both ends of the steel beam; Step 5, hoisting the steel beam: make the end of the steel beam enter the groove part along the guide part and dock with the end of the horizontal beam section, cut the steel plate belonging to the groove part on the first side at the lower flange of the steel beam, and hoist the cut steel plate to the ground, wherein the first side is the side for installing the node plate; Step 6: Rotate the node plate so that its screw holes correspond to the screw holes of the beam column and the screw holes of the steel beam respectively, and fix the steel beam and the beam column with the node plate through high-strength bolts; Step 7, cutting a second side steel plate at the lower flange of the steel beam, and fixing the steel plate to the upper flange of the steel beam by spot welding, the steel plate is used as the arc-starting plate welded here, and the second side is the side without the node plate installed; In step 7, the step of spot welding the steel plate to the upper flange of the steel beam specifically includes: spot welding the steel plate at the connection between the groove part and the guide part of the limiting structure to the upper flange of the steel beam; Step 8, welding the lower flange weld of the steel beam; Step 9, welding the upper flange weld of the steel beam in step 7, and the steel plate located at the bottom of the groove portion serves as an arc starter plate for welding the first side weld; Step 10: Weld the web weld and cut the code plate.

2. A steel beam hoisting construction method as claimed in claim 1, characterized in that: The node plate is rotatably connected to the steel beam via a rotating pin.

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