Section steel inserting device applied to TRD construction method wall with empty wall section

Abstract

The utility model belongs to a special tool and is specially used for construction of a TRD construction method wall with an empty wall section. The utility model relates to an internally-inserted profile steel device applied to a TRD construction method wall with an empty wall section, which is characterized in that the internally-inserted profile steel device is a cylinder, the length of the internally-inserted profile steel device is not smaller than the depth of the empty wall section, and the outer contour of the cross section of the internally-inserted profile steel device is not larger than the outer contour of the cross section of downwards-inserted profile steel. The grab bucket of the plate inserting machine is not in contact with an empty wall section any more, the empty wall section cannot be damaged, the construction quality of downward-inserting profile steel cannot be affected, and construction of stirring wall forming is facilitated. Red paint is adopted to mark an obvious mark on the profile steel internally-inserting device, accurate reading reference is provided for operators, and it is ensured that profile steel is downwards inserted to the designed depth.

Description

Technical Field

[0001] The utility model belongs to a special tool, which is specially used in the construction of a TRD construction method wall with a hollow wall section. Background Art

[0002] TRD construction method wall is a cement soil mixing continuous wall of equal thickness. The TRD construction method pile driver is used to insert a chain saw-type cutting tool into the foundation, dig to the designed depth, and then cut the soil horizontally. At the same time, it is necessary to inject excavation fluid, then withdraw to the origin, inject solidifying fluid, insert steel, mix with the original soil, and continue to dig horizontally, mix, and advance horizontally to form a high-quality cement soil underground continuous wall. Figure 1 As shown, when the design elevation of the top of the cement-soil mixing wall of equal thickness is lower than the existing terrain, there must be an empty wall section 3 at the top of the wall during the construction of the cement-soil mixing wall of equal thickness. According to the design requirements, the wall thickness of the existing cement-soil mixing wall of equal thickness is controlled between 450mm and 850mm. Since the maximum width of the smallest model grab used by the existing plate inserting machine on the market exceeds 1000mm, when the grab inserts the steel 1 into the solid wall section 4, it will collide with the soil around the wall groove when entering the empty wall section 3, causing the steel to deviate, fail to reach or exceed the predetermined depth, and other problems, affecting the construction quality of the cement-soil mixing wall. Therefore, the existing construction method is to remove the empty wall section first, so that the construction of the cement-soil mixing wall of equal thickness and the inserted steel must be completed in a foundation pit below the flat ground. The range of activity of the equipment is limited, inconvenient, and affects the efficiency. Once rainwater is encountered, the drainage in the foundation pit is also troublesome, affecting the construction period. Summary of the invention

[0003] The purpose of the utility model is to overcome the difficulties existing in the construction of cement-soil mixing walls of equal thickness with empty wall sections, and to provide an internally inserted steel device for TRD construction method walls with empty wall sections, which can avoid interference between the grab bucket of the inserting machine and the empty wall section and affect the construction quality of the cement-soil mixing wall of equal thickness.

[0004] The technical solution adopted by the utility model is: an inserted steel device applied to a TRD construction wall with a hollow wall section. The key point is that the inserted steel device is a column, the length of which is not shorter than the depth of the hollow wall section, and the outer contour of the cross section is not larger than the outer contour of the cross section of the lower inserted steel.

[0005] The utility model creatively adds an inserted steel device with a length not shorter than the depth of the empty wall section. The use of the inserted steel device makes the grab of the plate inserting machine no longer contact the empty wall section, so the grab of the plate inserting machine will not cause damage to the empty wall section and affect the construction quality of the inserted steel, which is more conducive to the construction of mixing into a wall. The outer contour of the cross section of the inserted steel device is not larger than the outer contour of the cross section of the steel. To ensure that the inserted steel device can easily enter the empty wall section formed by the steel, the two are generally the same, which is convenient for material selection and production.

[0006] Furthermore, the internally inserted steel device is composed of a main body and a socket plate, wherein the main body is made of a steel of the same specification as the used steel, and the socket plate is a rectangular steel plate, at least two of which are symmetrically welded to the two side surfaces of the web at one end of the main body. The utility model uses a steel of the same specification as the used lower inserted steel as the main body of the internally inserted steel device, applies force evenly, and uses the socket plate as a connecting member and a positioning member, thereby ensuring that the internally inserted steel device is quickly and conveniently connected to the steel.

[0007] Furthermore, there are four socket plates, two by two of which are fixed to the surface of the web, and each of the socket plates has a side surface fixed to the inner side surface of the bidirectional flange of the main body, which is convenient for processing.

[0008] Furthermore, the length of the socket plate welded to the web of the internal steel device is 50-70% of the total length of the socket plate, and the thickness of the socket plate is 0.9-1.5 of the thickness of the web. The smaller the length of the socket plate, the more cost-saving it is, while ensuring the strength and positioning effectiveness.

[0009] The internal plug-in steel device is composed of a main body and a plug-in plate. The steel has a socket slot that matches the plug-in plate. The plug-in plate of the internal plug-in steel device is inserted into the socket slot at the top of the steel to form a socket connection. The internal plug-in steel device is selected to use the same specification and model as the lower plug-in steel to ensure that the overall force is balanced during the lower insertion process.

[0010] Furthermore, the inserted steel section device has a mark for the depth of the empty wall section. With the mark, it can be conveniently, quickly and clearly determined that the driven steel section has reached the designed position.

[0011] The utility model makes the grab of the plate inserter no longer contact with the empty wall section, which can not cause damage to the empty wall section and affect the construction quality of the inserted steel section, which is more conducive to the construction of mixing into the wall. The inserted steel section device is marked with obvious marks in red paint to provide accurate reading reference for the operators to ensure that the steel section is inserted to the designed depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Section diagram of cement soil mixing wall with equal thickness and hollow wall section

[0013] Figure 2 This is the size drawing of the lower inserted steel

[0014] Figure 3 This is a cross-sectional view of the type I connecting steel of the inserted steel device in Example 1

[0015] Figure 4 This is a large-scale drawing of the type I socket plate of the internally inserted steel device in Example 1

[0016] Figure 5 Schematic diagram of the structure of the type II inserted steel device in Example 2

[0017] Figure 6 This is the large-scale drawing of the type II socket plate of the internally inserted steel device in Example 2

[0018] Among them: 1. Steel, 3. Hollow wall section, 4. Solid wall section, 6. Grab bucket, 7. Type I internal steel device, 71. Socket plate, 72. Main body, 721. Double-way flange, 722. Web, 8. Type II internal steel device, 81. Socket plate, 83. Socket slot. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with the drawings so that those skilled in the art can better understand the present invention.

[0020] The utility model is suitable for Figure 1 In the construction of the cement-soil mixing wall with equal thickness and hollow wall section shown in the figure, the shape of the lower inserted steel is as follows: Figure 2 The figure shows an H-shaped steel with a two-way flange length of B and a web length (including flange thickness t2) of H.

[0021] The utility model is an internal steel device applied to a TRD construction wall with an empty wall section. It is a column, the upper end of which is clamped by a plate inserting machine grab, and the lower end is connected to the lower steel. Its length is not shorter than the depth of the empty wall section, and the outer contour of the cross section is not larger than the outer contour of the cross section of the lower steel. The purpose of the internal steel device is to connect with the lower steel, push the lower steel to continue the lower insertion operation in the empty wall section, and use the length of the internal steel device to penetrate into the empty wall section, thereby avoiding the contact between the plate inserting machine and the empty wall section.

[0022] Embodiment 1, as Figure 3-4As shown, the internal plug-in steel device type I 7 is composed of a main body 72 and a socket plate 71. The main body is made of a steel of the same specification as the steel used. The socket plate is a rectangular steel plate, at least two of which are symmetrically welded to the two side surfaces of the web 722 at one end of the main body. The spacing between the inner surfaces of the two opposite socket plates forms a socket slot connected to the lower plug-in steel, which serves to connect and fix the main body and the lower plug-in steel. The length of the socket plate welded to the web of the internal plug-in steel device is 50-70% of the total length of the socket plate, and the thickness of the socket plate is 0.9-1.5 times the thickness of the web. In this example, the length of the socket plate is 500-600mm, of which the length of the welded web is 300-400mm, the protruding length is 200mm, and the thickness is 20mm-30mm. One side of the socket plate 71 should be close to the H-shaped steel bidirectional flange 721 at each end.

[0023] The length of the socket plate is based on ensuring the strength and effectiveness of positioning. The smaller the volume, the more cost-saving it is. There are four socket plates, two of which are fixed to the surface of the web 722. There is a gap between the socket plates on the same side. Each socket plate 71 has a side surface fixed to the inner side surface of the two-way flange 721 of the main body. The reason for using four pieces is to reduce the use of materials. At the same time, each piece can be fixed to the inner side surface of the two-way flange of the main body through a side surface, which is convenient for positioning. The internal steel device has a mark for the depth of the empty wall section, which is set on the main body 72. This mark can be a notch, a protruding identification rod or a line drawn with colored paint, etc. Generally, lines drawn with red or yellow paint are selected.

[0024] Embodiment 2, as Figure 5 , 6 As shown, the type II internal plug-in steel device 8 is composed of a main body 7 and a plug-in plate 81. The main body 7 of the type II internal plug-in steel device is an H-shaped steel of the same model as the lower plug-in steel. The part of the two-way flange higher than the web is removed, and the overall web length "H" of the H-shaped steel is retained. A section of the web is removed from the upper end of the lower plug-in steel (which can be directly customized from the steel) to form a socket 83 that matches the plug-in plate. The plug-in plate 81 at the socket end forms a socket connection with the socket 83 at the top of the lower plug-in steel. The shape and size of the plug-in plate 81 coincide with the socket 83 of the lower plug-in steel 1 to ensure that the overall force of the connection surface is balanced. The plug-in plate 81 and the socket 83 are both rectangular, with a length equal to the web length (including the flange thickness t2) of H, a width (extended length) of 200-300mm, and a thickness equal to the web thickness t1. The main body 7 may be provided with a mark as the depth of the hollow wall section, and the distance between the mark and the socket end of the internally inserted steel device (excluding the extended length of the plug plate 81) is equal to the depth of the hollow wall section. The remaining parts not described are the same as those in the first embodiment.

Claims

1. An insert steel device applied to a TRD construction wall with a hollow wall section, characterized in that: The inserted steel device is a column, whose length is not shorter than the depth of the empty wall section, and the outer contour of the cross section is not larger than the outer contour of the cross section of the lower inserted steel. The inserted steel device consists of a main body and a socket plate. The main body is made of steel of the same specification as the steel used, and the socket plate is a rectangular steel plate, at least two of which are symmetrically welded to the two side surfaces of the web at one end of the main body.

2. The internal steel structure device for TRD construction wall with empty wall section according to claim 1, characterized in that: There are four socket plates, two by two of which are fixed to the surface of the web, and each of the socket plates has a side surface fixed to the inner side surface of the double-way flange of the main body.

3. The internal steel structure device for TRD construction wall with empty wall section according to claim 1, characterized in that: The length of the socket plate welded to the web of the main body is 50-70% of the total length of the socket plate, and the thickness of the socket plate is 0.9-1.5 times the thickness of the web.

4. The internal steel structure device for TRD construction wall with empty wall section according to claim 1, characterized in that: The internally inserted steel device is composed of a main body and a plug plate. The steel is provided with a socket slot matched with the plug plate. The plug plate of the internally inserted steel device is inserted into the socket slot at the top of the steel to form a socket connection.

5. The internal steel structure device for TRD construction wall with empty wall section according to claim 1, characterized in that: The outer surface of the inner-inserted steel device is provided with a mark indicating the depth of the empty wall section.

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