H-shaped steel plate reinforcing wall based on TRD construction method

Abstract

The H-shaped steel plate reinforced wall based on the TRD construction method comprises a cement soil wall body, and a plurality of H-shaped steel plates which are transversely arranged are inserted into the cement soil wall body; an upper side wing and a lower side wing are arranged at two longitudinal ends of the H-shaped steel plate and are mutually spliced through groove structures at the end parts of the upper side wing and the lower side wing; an anchoring steel cover plate is connected to the top splicing position of the H-shaped steel plates, and the H-shaped steel plates are spliced into a whole. Compared with a traditional design, a groove structure and an anchoring steel cover plate at the joint of the H-shaped steel plates are added to form a TRD continuous wall unit body, and the H-shaped steel plates are inserted before the strength of cement soil is generated, so that horizontal force is not borne by single H-shaped steel, but is dispersed by a system formed by mutual connection and mutual reaction of the H-shaped steel plates, and the strength of the TRD continuous wall is improved. The lateral rigidity of the underground diaphragm wall is remarkably improved, and the risks of local water permeation, water seepage, cracking and collapse are greatly reduced under the condition that horizontal force is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support in geotechnical engineering, and in particular to an H-shaped steel plate reinforced wall based on a TRD method. Background Art

[0002] Underground continuous wall is a common construction project. A deep trench is dug underground by machinery, a steel cage is suspended in the trench, and concrete is poured using the conduit method. Ultimately, a continuous reinforced concrete wall is formed as a load-bearing and water-retaining structure.

[0003] As an advanced underground continuous wall construction technology, the TRD method uses a specialized cutting box to cut and mix soil and cement slurry on the ground to form a continuous anti-seepage wall. This method changes the traditional model of underground continuous walls, which use discontinuous pile positions. Instead, it uses specialized cutting equipment to cut and mix soil in different strata. This method offers advantages such as applicability to a wide range of geological conditions, excellent wall continuity, high construction precision, low noise and vibration, fast construction speed, high material controllability, reduced earthwork excavation, and high energy efficiency.

[0004] Invention Publication No. 108589699A discloses a TRD wall with H-shaped steel inserts. This reinforces the wall structure by inserting H-shaped steel into the TRD wall. However, the use of separate H-shaped steel inserts during construction presents uncertain construction precision, resulting in gaps between the left and right H-shaped steel sections, which can easily lead to leakage. If the joints are improperly treated or the concrete is not dense enough, groundwater can easily penetrate through the construction joints, compromising the waterproofing performance of the underground continuous wall. Furthermore, poor bonding between the H-shaped steel sections and the concrete side walls during construction can lead to localized strength deficiencies, compromising the overall bearing capacity and safety of the structure.

[0005] The traditional CSM method involves constructing the first phase of the wall first, followed by the second phase. This results in a slow construction process, and wall continuity relies heavily on manual control, which can be problematic. Furthermore, the cement slurry in the construction joint between the two phases cannot be evenly mixed. For CSM walls, lateral rigidity relies primarily on steel sections, which, when faced with high lateral pressures, such as near a river, cannot guarantee complete waterproofing of the side walls and prevent deformation. Relying solely on steel sections for lateral rigidity would dramatically increase steel costs and the wall's cross-section, reducing cost efficiency and increasing construction time. Summary of the Invention

[0006] In response to the above problems, the present invention proposes an H-shaped steel plate reinforced wall based on the TRD method and its construction process. The design concept is to increase the underground stiffness and waterproof performance of the wall by changing the construction method of the cement soil wall and the connection position and method of the H-shaped steel plate.

[0007] An H-shaped steel plate reinforced wall based on the TRD method comprises a cement soil wall 5, in which a plurality of transversely arranged H-shaped steel plates 1 and a plurality of anchor steel cover plates 6 are inserted;

[0008] The H-shaped steel plate 1 comprises a longitudinal web, with a transversely extending upper wing 2 provided at one longitudinal end thereof and a transversely extending lower wing 3 provided at the other longitudinal end thereof; bolt holes 4 are provided on the upper wing 2 and the lower wing 3; the transverse ends of the upper wing 2 are engaged with the upper wing 2 of the adjacent H-shaped steel plate 1 via groove structures, and the transverse ends of the lower wing 3 are engaged with the lower wing 3 of the adjacent H-shaped steel plate 1 via groove structures;

[0009] An anchoring steel cover plate 6 is laid on the top of the connection between adjacent H-shaped steel plates 1, and a reserved hole 61 is provided on the anchoring steel cover plate 6; the position of the reserved hole 61 corresponds to the bolt hole 4 up and down, and the bolt holes 4 of the two adjacent H-shaped steel plates 1 are fixed by bolt connection, thereby fixing the adjacent H-shaped steel plates 1 into a whole.

[0010] More specifically, a limit block 62 that can slide back and forth is provided at the bottom of the anchoring steel cover plate 6, and the limit block 62 can clamp the upper side wing 2 and the lower side wing 3; a torsion column 7 is provided at one longitudinal end of the anchoring steel cover plate 6; the torsion column 7 is transmission-connected to the limit block 62, and the rotation of the torsion column 7 can make the limit block 62 slide back and forth.

[0011] More specifically, the torsion post 7 includes a threaded post 64 and an isopentagon 63 , which can be engaged with an external wrench.

[0012] More specifically, the transverse distance between the bolt holes 4 and the web is smaller than the transverse distance between the bolt holes 4 and the ends of the upper wing 2 and the lower wing 3 .

[0013] More specifically, the longitudinal length of the anchoring steel cover plate 6 is greater than the distance between the upper wing 2 and the lower wing 3 .

[0014] The beneficial effects of the present invention are:

[0015] The traditional construction method of inserting steel sections was changed, and groove structures and anchor steel cover plates were added at the joints of the H-shaped steel plates to form TRD continuous wall units. H-shaped steel plates were inserted before the strength of the cement soil was generated, so that the horizontal force is no longer borne by a single H-shaped steel, but is dispersed by a system of several H-shaped steel plates that are interconnected and react with each other, significantly improving the lateral stiffness of the underground continuous wall and greatly reducing the risks of local water seepage, cracking, and collapse in the event of increased horizontal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall plan view of an H-shaped steel plate reinforced wall based on the TRD method of the utility model; Figure 2 This is a top view of an H-shaped steel plate for reinforcing a wall using a TRD method according to the present invention; Figure 3 This is an elevation view of an H-shaped steel plate reinforced wall based on the TRD method of the utility model; Figure 4 This is a side view of an H-shaped steel plate for reinforcing a wall using a TRD method according to the present invention; Figure 5 This is an elevation view of an anchor steel cover plate for an H-shaped steel plate reinforced wall based on the TRD method of the present invention; Figure 6 This is a schematic diagram of a torsion column structure of an H-shaped steel plate reinforced wall based on the TRD method of the present invention; Figure 7 This is a side view of a torsion column of an H-shaped steel plate reinforced wall based on the TRD method of the present invention; Figure 8 This is the main view of the torsion column of an H-shaped steel plate reinforced wall based on the TRD method of the utility model. DETAILED DESCRIPTION

[0017] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not intended to limit the embodiment of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0020] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0022] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0024] An H-shaped steel plate reinforced wall based on the TRD method comprises a cement soil wall 5, in which a plurality of transversely arranged H-shaped steel plates 1 and a plurality of anchor steel cover plates 6 are inserted;

[0025] The H-shaped steel plate 1 comprises a longitudinal web, with a transversely extending upper wing 2 provided at one longitudinal end thereof and a transversely extending lower wing 3 provided at the other longitudinal end thereof; bolt holes 4 are provided on the upper wing 2 and the lower wing 3; the transverse ends of the upper wing 2 are engaged with the upper wing 2 of the adjacent H-shaped steel plate 1 via groove structures, and the transverse ends of the lower wing 3 are engaged with the lower wing 3 of the adjacent H-shaped steel plate 1 via groove structures;

[0026] An anchoring steel cover plate 6 is laid on the top of the connection between adjacent H-shaped steel plates 1, and a reserved hole 61 is provided on the anchoring steel cover plate 6; the position of the reserved hole 61 corresponds to the bolt hole 4 up and down, and the bolt holes 4 of the two adjacent H-shaped steel plates 1 are fixed by bolt connection, thereby fixing the adjacent H-shaped steel plates 1 into a whole.

[0027] In some embodiments, a limit block 62 that can slide back and forth is provided at the bottom of the anchoring steel cover plate 6, and the limit block 62 can clamp the upper side wing 2 and the lower side wing 3; a torsion column 7 is provided at one longitudinal end of the anchoring steel cover plate 6; the torsion column 7 is transmission-connected to the limit block 62, and the rotation of the torsion column 7 can cause the limit block 62 to slide back and forth.

[0028] In some embodiments, the torsion post 7 includes a threaded post 64 and an isopentagon 63 . The isopentagon 63 can be engaged with an external wrench.

[0029] In some embodiments, the transverse distance between the bolt hole 4 and the web is smaller than the transverse distance between the bolt hole 4 and the ends of the upper wing 2 and the lower wing 3 .

[0030] In some embodiments, the longitudinal length of the anchoring steel cover plate 6 is greater than the distance between the upper wing 2 and the lower wing 3 .

[0031] The beneficial effects of the present invention are:

[0032] The traditional construction method of inserting steel sections was changed, and groove structures and anchor steel cover plates were added at the joints of the H-shaped steel plates to form TRD continuous wall units. H-shaped steel plates were inserted before the strength of the cement soil was generated, so that the horizontal force is no longer borne by a single H-shaped steel, but is dispersed by a system of several H-shaped steel plates that are interconnected and react with each other, significantly improving the lateral stiffness of the underground continuous wall and greatly reducing the risks of local water seepage, cracking, and collapse in the event of increased horizontal force.

[0033] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An H-shaped steel plate reinforced wall based on the TRD method, characterized by: It comprises a cement soil wall (5), in which a plurality of transversely arranged H-shaped steel plates (1) and a plurality of anchoring steel cover plates (6) are inserted; The H-shaped steel plate (1) comprises a longitudinal web, wherein one longitudinal end of the web is provided with a transversely extending upper wing (2), and the other end is provided with a transversely extending lower wing (3); bolt holes (4) are provided on the upper wing (2) and the lower wing (3); the transverse ends of the upper wing (2) are engaged with the upper wing (2) of the adjacent H-shaped steel plate (1) through a groove structure, and the transverse ends of the lower wing (3) are engaged with the lower wing (3) of the adjacent H-shaped steel plate (1) through a groove structure; An anchoring steel cover plate (6) is laid on the top of the connection between adjacent H-shaped steel plates (1), and a reserved hole (61) is provided on the anchoring steel cover plate (6); the position of the reserved hole (61) corresponds to the bolt hole (4) up and down, and the bolt holes (4) of the two adjacent H-shaped steel plates (1) are fixed by bolt connection, thereby fixing the adjacent H-shaped steel plates (1) into a whole.

2. The H-shaped steel plate reinforced wall based on the TRD method according to claim 1, characterized in that: A limit block (62) capable of sliding forward and backward is provided at the bottom of the anchoring steel cover plate (6), and the limit block (62) can clamp the upper wing (2) and the lower wing (3); a torsion column (7) is provided at one longitudinal end of the anchoring steel cover plate (6); the torsion column (7) is transmission-connected to the limit block (62), and the rotation of the torsion column (7) can cause the limit block (62) to slide forward and backward.

3. The H-shaped steel plate reinforced wall based on the TRD method according to claim 2, characterized in that: The torsion column (7) comprises a threaded column (64) and an isopentagon (63), and the isopentagon (63) can be engaged with an external wrench.

4. The H-shaped steel plate reinforced wall based on the TRD method according to claim 1, characterized in that: The transverse distance between the bolt hole (4) and the web is smaller than the transverse distance between the bolt hole (4) and the ends of the upper wing (2) and the lower wing (3).

5. The H-shaped steel plate reinforced wall based on the TRD method according to claim 1, characterized in that: The longitudinal length of the anchoring steel cover plate (6) is greater than the distance between the upper wing (2) and the lower wing (3).

6. The H-shaped steel plate reinforced wall based on the TRD method according to claim 1, characterized in that: The surface of the H-shaped steel plate (1) is coated with a friction reducing agent.

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