Construction method of ALC strip panels for exterior walls of steel structure buildings

Abstract

This invention discloses a construction method for ALC (Alternating Current Carbide) panels on the exterior walls of steel structure buildings, comprising the following steps: marking the positions of the beam clamps corresponding to the ALC panels; installing the beam clamps to the bottom of the steel beams; fixing the bottom angle steel to the ground; hoisting the ALC panels; passing the threaded end of the hook bolt through the pre-drilled horizontal continuous installation hole in the ALC panel, and hooking the hook end of the hook bolt onto the vertical section of the second L-shaped structure and the bottom angle steel; welding the hook end of the hook bolt to the beam clamp and the bottom angle steel; repeating steps 1 to 6 to install multiple ALC panels to form the building's exterior wall; and performing panel joint treatment and anti-corrosion treatment on the building's exterior wall. This invention relates to the field of building construction technology and can solve the aforementioned technical problems existing in the prior art.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a method for constructing ALC strip panels on the exterior walls of steel structure buildings. Background Technology

[0002] With the booming development of prefabricated buildings in my country, steel frame structures are widely used in various industrial and public buildings due to their advantages such as light weight, fast construction, energy saving, and environmental protection. ALC panels, as a high-performance lightweight exterior cladding and interior partition material, are increasingly used in steel frame structures. When using ALC panels as the building's exterior cladding, the installation quality directly affects the safety, stability, and durability of the building structure.

[0003] Currently, on construction sites, angle steel is often welded to steel beams, and then the ALC strips are fixed to the angle steel using hook bolts. The hook end of the hook bolt is welded to the angle steel, and the other end is secured with a nut; alternatively, welded U-shaped clips are used for fixing. However, this construction method has the following technical problems:

[0004] 1) The welds between the angle steel or U-shaped clamp and the flange of the steel beam are dense. Direct welding on the flange of the steel beam will damage the steel beam body and affect its load-bearing capacity.

[0005] 2) Due to the unfavorable working conditions such as the fireproof coating on the steel beam surface and the overhead welding on site, the welding quality between the angle steel and the steel beam is difficult to guarantee. Once the weld fails, it may cause the entire exterior wall to collapse, posing a serious safety hazard.

[0006] Therefore, there is a need to provide a construction method for ALC strip panels on the exterior walls of steel structure buildings, which can solve the above-mentioned technical problems existing in the prior art. Summary of the Invention

[0007] The purpose of this invention is to provide a construction method for ALC strip panels on the exterior walls of steel structure buildings, which can solve the above-mentioned technical problems existing in the prior art.

[0008] This invention is implemented as follows:

[0009] A method for constructing ALC (Alternating Current) panels on the exterior walls of steel structure buildings includes the following steps:

[0010] Step 1: According to the design layout drawing, mark the installation edge lines and control lines of the ALC strips on the bottom of the steel beam and the ground, and accurately mark the position of the beam clamp corresponding to each ALC strip;

[0011] Step 2: Install the beam clamps to the bottom of the steel beam;

[0012] Step 3: Secure the bottom angle steel to the ground using expansion bolts;

[0013] Step 4: Hoist the ALC strip, straighten the ALC strip and lean it against the installed beam clamp and bottom angle steel, so that the bottom of the ALC strip is aligned with the bottom of the steel beam and the positioning line on the ground.

[0014] Step 5: From the side of the ALC strip, pass the threaded end of the hook bolt through the horizontal continuous mounting hole reserved at the top of the ALC strip. The hook end of the hook bolt hooks onto the beam clamp. Pass the threaded end of the hook bolt through the horizontal continuous mounting hole reserved at the bottom of the ALC strip. The hook end of the hook bolt hooks onto the bottom angle steel.

[0015] Step 6: Weld the hook ends of the hook bolts located at the top and bottom of the ALC strip to the beam clamp and the bottom angle steel respectively;

[0016] Step 7: Repeat steps 1 to 6 to install multiple ALC panels in sequence to form the building's exterior wall;

[0017] Step 8: Treat the joints between the panels of the building's exterior walls;

[0018] Step 9: Apply anti-corrosion treatment to the exterior walls of the building.

[0019] In step 1, the position of the beam clamp matches the width of the ALC strip, and the fixing point of the beam clamp is located in the middle of each ALC strip.

[0020] The beam clamp includes a first clamp, a second clamp, and fastening bolts. One end of the first clamp has a hook-shaped structure, allowing it to fit and engage with the top surface of one end of the lower flange of the steel beam. The other end of the first clamp has a first L-shaped structure, with the horizontal section of the first L-shaped structure adhering to the bottom surface of the lower flange of the steel beam, and the vertical section of the first L-shaped structure extending vertically downwards along the other end of the lower flange of the steel beam. The second clamp has a second L-shaped structure, with the horizontal section of the second L-shaped structure adhering to the top surface of the other end of the lower flange of the steel beam, and the vertical section of the second L-shaped structure adhering to the vertical section of the first L-shaped structure and connected by fastening bolts, so that the first clamp engages with the lower flange of the steel beam.

[0021] In step 3, the horizontal section of the bottom angle steel is attached to the ground, and the vertical section of the bottom angle steel extends upward and aligns with the vertical section of the first L-shaped structure in the beam clamp.

[0022] In step 5, a washer and nut are placed on the threaded end of the hook bolt, but not fully tightened. The verticality and flatness of the ALC strip are adjusted, the position of the ALC strip is finely adjusted, and then the nut is tightened to complete the fixing of the ALC strip.

[0023] In step 6, the welding length between the hook end of the hook bolt at the top of the ALC strip and the vertical section of the second L-shaped structure in the beam clamp is not less than 25mm, and the welding length between the hook end of the hook bolt at the bottom of the ALC strip and the vertical section of the bottom angle steel is not less than 25mm.

[0024] In step 8, the joint treatment includes filling the joint between each pair of adjacent ALC strips with PU foam or polymer mortar according to the design requirements, and laying alkali-resistant mesh cloth for crack resistance treatment.

[0025] In step 9, the anti-corrosion treatment includes: applying anti-rust paint to all exposed metal parts for corrosion protection.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. This invention achieves ALC panel installation through mechanical connection. The top of the ALC panel is reliably fixed by beam clamps, and the bottom of the ALC panel is reliably fixed by bottom angle steel. While ensuring connection strength, it simplifies the construction process, improves construction efficiency and installation quality, and effectively shortens the construction period.

[0028] 2. The beam clamp of the present invention uses a first clamp and a second clamp to hold the lower flange of the steel beam and fix it with fastening bolts. It eliminates the need for welding on the steel beam, avoiding problems such as damage to the steel beam and unstable welding quality. The construction is simple, efficient and safe. Attached Figure Description

[0029] Figure 1 This is a construction diagram of step 1 in the construction method of ALC strip panels for the exterior wall of steel structure buildings of the present invention;

[0030] Figure 2 This is a construction diagram of step 2 in the construction method of ALC strip panels for the exterior wall of steel structure buildings of the present invention;

[0031] Figure 3 This is a construction diagram of step 3 in the construction method of ALC strip panels for the exterior wall of steel structure buildings of the present invention;

[0032] Figure 4 This is a construction diagram of step 5 in the construction method of ALC strip panels for the exterior wall of steel structure buildings of the present invention;

[0033] Figure 5 This is a construction diagram of step 7 in the construction method of ALC strip panels for the exterior wall of steel structure buildings of the present invention.

[0034] In the figure, there is a steel beam 1, an ALC strip 2, a horizontal through-hole 21, a first clamp 31, a hook-shaped structure 311, a first L-shaped structure 312, a second clamp 32, a second L-shaped structure 321, a fastening bolt 33, a bottom angle steel 4, a ground 5, an expansion bolt 6, a hook bolt 7, and a nut 71. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] A method for constructing ALC (Alternating Current) panels on the exterior walls of steel structure buildings includes the following steps:

[0037] Please see the appendix Figure 1 Step 1: According to the design layout drawing, mark the installation edge line and control line of ALC strip 2 at the bottom of steel beam 1 and the ground 5, and accurately mark the position of the beam clamp corresponding to each ALC strip 2.

[0038] In step 1, the position of the beam clamp matches the width of the ALC strip 2, and the fixing point of the beam clamp is located in the middle of each ALC strip 2.

[0039] For example, the width of the commonly used ALC strip 2 in the prior art is 600mm, so the spacing of the beam clamps is 600mm.

[0040] Please see the appendix Figure 2 Step 2: Install the beam clamp to the bottom of steel beam 1.

[0041] The beam clamp includes a first clamp 31, a second clamp 32, and a fastening bolt 33. One end of the first clamp 31 has a hook-shaped structure 311, which allows one end of the first clamp 31 to fit and hug the top surface of one end of the lower flange of the steel beam 1. The other end of the first clamp 31 has a first L-shaped structure 312. The horizontal section of the first L-shaped structure 312 is attached to the bottom surface of the lower flange of the steel beam 1, and the vertical section of the first L-shaped structure 312 extends vertically downward along the other end of the lower flange of the steel beam 1. The second clamp 32 has a second L-shaped structure 321. The horizontal section of the second L-shaped structure 321 is attached to the top surface of the other end of the lower flange of the steel beam 1, and the vertical section of the second L-shaped structure 321 is attached to the vertical section of the first L-shaped structure 312 and connected by the fastening bolt 33, so that the first clamp 31 hugs the lower flange of the steel beam 1.

[0042] Preferably, the first clamp 31, the second clamp 32 and the fastening bolt 33 can be made of Q235 steel, which has high structural strength and load-bearing capacity and is not easily deformed or damaged.

[0043] Please see the appendix Figure 3 Step 3: Use expansion bolts 6 to fix the bottom angle steel 4 to the ground 5.

[0044] In step 3, the horizontal section of the bottom angle steel 4 is attached to the ground 5, and the vertical section of the bottom angle steel 4 extends upward and aligns with the vertical section of the first L-shaped structure 312 in the beam clamp.

[0045] Step 4: Hoist ALC strip 2, straighten ALC strip 2 and slowly move it toward the installed beam clamp and bottom angle steel 4, so that the bottom of ALC strip 2 is aligned with the positioning line (i.e. installation edge line and control line) on the bottom of steel beam 1 and the ground 5.

[0046] The hoisting and positioning of ALC panel 2 is a standard installation procedure for ALC panel 2, and its specific construction process will not be described in detail here.

[0047] Please see the appendix Figure 4 Step 5: From the side of ALC strip 2, pass the threaded end of the hook bolt 7 through the horizontal through-hole 21 reserved at the top of ALC strip 2. The hook end of the hook bolt 7 hooks the vertical section of the second L-shaped structure 321 in the beam clamp. Pass the threaded end of the hook bolt 7 through the horizontal through-hole 21 reserved at the bottom of ALC strip 2. The hook end of the hook bolt 7 hooks the vertical section of the bottom angle steel 4.

[0048] In step 5, a washer and nut 71 are placed on the threaded end of the hook bolt 7, but not fully tightened. Tools such as a plumb bob and a spirit level are used to adjust the verticality and flatness of the ALC strip 2, and the position of the ALC strip 2 is finely adjusted. Then the nut 71 is tightened to complete the fixing of the ALC strip 2.

[0049] When tightening nut 71, the tightening torque should be moderate to ensure that the ALC strip 2 is stable and does not generate excessive local stress.

[0050] Step 6: Weld the hook ends of the hook bolts 7 located at the top and bottom of the ALC strip 2 to the beam clamp and the bottom angle steel 4 respectively.

[0051] In step 6, the welding length between the hook end of the hook bolt 7 at the top of the ALC strip 2 and the vertical section of the second L-shaped structure 321 in the beam clamp is not less than 25mm, and the welding length between the hook end of the hook bolt 7 at the bottom of the ALC strip 2 and the vertical section of the bottom angle steel 4 is not less than 25mm, to ensure the structural strength of the welded joint.

[0052] Please see the appendix Figure 5 Step 7: Repeat steps 1 to 6 to install multiple ALC strips 2 in sequence to form the building's exterior wall.

[0053] Step 8: Treat the joints between the panels on the exterior walls of the building.

[0054] In step 8, the joint treatment includes filling the joint between each pair of adjacent ALC strips 2 with PU foam or polymer mortar according to the design requirements, and laying alkali-resistant mesh cloth for crack resistance treatment.

[0055] The joint treatment is the standard installation process for ALC strip 2, and its specific operation will not be described in detail here.

[0056] Step 9: Apply anti-corrosion treatment to the exterior walls of the building.

[0057] In step 9, the anti-corrosion treatment includes applying anti-rust paint to all exposed welds, bottom angle steel 4, and hook bolts 7, etc.

[0058] With the installation of ALC strip 2 now complete, the installation position, verticality, flatness, connection and fixing quality, and joint treatment of ALC strip 2 can be inspected in batches.

[0059] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for constructing ALC strip panels on the exterior walls of steel structure buildings, characterized by: Includes the following steps: Step 1: According to the design layout drawing, pop up the installation edge line and control line of ALC strip (2) at the bottom of steel beam (1) and ground (5), and accurately mark the position of beam clamp corresponding to each ALC strip (2); Step 2: Install the beam clamp to the bottom of the steel beam (1); Step 3: Use expansion bolts (6) to fix the bottom angle steel (4) to the ground (5); Step 4: Hoist the ALC strip (2), straighten the ALC strip (2) and lean it against the installed beam clamp and bottom angle steel (4) so ​​that the bottom of the ALC strip (2) is aligned with the positioning line on the bottom of the steel beam (1) and the ground (5); Step 5: From the side of the ALC strip (2), pass the threaded end of the hook bolt (7) through the horizontal through-hole (21) reserved at the top of the ALC strip (2). The hook end of the hook bolt (7) hooks onto the beam clamp. Pass the threaded end of the hook bolt (7) through the horizontal through-hole (21) reserved at the bottom of the ALC strip (2). The hook end of the hook bolt (7) hooks onto the bottom angle steel (4). Step 6: Weld the hook ends of the hook bolts (7) located at the top and bottom of the ALC strip (2) to the beam clamp and the bottom angle steel (4) respectively; Step 7: Repeat steps 1 to 6 to install multiple ALC panels (2) in sequence to form the building exterior wall; Step 8: Treat the joints between the panels of the building's exterior walls; Step 9: Apply anti-corrosion treatment to the exterior walls of the building.

2. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 1, the position of the beam clamp matches the width of the ALC strip (2), and the fixing point of the beam clamp is located in the middle of each ALC strip (2).

3. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1 or 2, characterized in that: The beam clamp includes a first clamp (31), a second clamp (32), and a fastening bolt (33); one end of the first clamp (31) has a hook-shaped structure (311), so that one end of the first clamp (31) can fit and hug the top surface of one end of the lower flange of the steel beam (1), and the other end of the first clamp (31) has a first L-shaped structure (312), the horizontal section of the first L-shaped structure (312) is attached to the bottom surface of the lower flange of the steel beam (1), the first L-shaped structure (312) The vertical section of 312 extends vertically downward along the other end of the lower flange of the steel beam (1); the second clamp (32) is a second L-shaped structure (321), the horizontal section of the second L-shaped structure (321) is attached to the top surface of the other end of the lower flange of the steel beam (1), the vertical section of the second L-shaped structure (321) is attached to the vertical section of the first L-shaped structure (312) and connected by fastening bolts (33), so that the first clamp (31) hugs the lower flange of the steel beam (1).

4. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 3, the horizontal section of the bottom angle steel (4) is attached to the ground (5), and the vertical section of the bottom angle steel (4) extends upward and aligns with the vertical section of the first L-shaped structure (312) in the beam clamp.

5. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 5, a washer and nut (71) are put on the threaded end of the hook bolt (7), but not fully tightened. The verticality and flatness of the ALC strip (2) are adjusted, the position of the ALC strip (2) is finely adjusted, and then the nut (71) is tightened to complete the fixing of the ALC strip (2).

6. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 6, the welding length between the hook end of the hook bolt (7) at the top of the ALC strip (2) and the vertical section of the second L-shaped structure (321) in the beam clamp is not less than 25mm, and the welding length between the hook end of the hook bolt (7) at the bottom of the ALC strip (2) and the vertical section of the bottom angle steel (4) is not less than 25mm.

7. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 8, the joint treatment includes filling the joint between each pair of adjacent ALC strips (2) with PU foam or polymer mortar according to the design requirements, and laying alkali-resistant mesh cloth for crack resistance treatment.

8. The construction method for ALC strip panels on the exterior walls of steel structure buildings according to claim 1, characterized in that: In step 9, the anti-corrosion treatment includes: applying anti-rust paint to all exposed metal parts for corrosion protection.

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