Detachable protection device for special steel sheet pile

Abstract

The utility model relates to the technical field of foundation pit engineering, and disclose a kind of detachable protection device of special steel sheet pile, including special steel sheet pile, the inside of special steel sheet pile is provided with steel shell protection mechanism, the inside of special steel sheet pile is provided with detection mechanism, and the steel shell protection mechanism includes the steel shell protection plate in special steel sheet pile inside.The utility model provides solid physical protection for monitoring instrument and circuit installed on steel sheet pile by setting steel shell protection mechanism, effectively avoids the damage caused by external force impact, friction or soil extrusion in the process of piling construction and subsequent use, ensures the continuity and accuracy of monitoring data, steel shell protection plate is connected with special steel sheet pile body by connecting strip and fixed bolt, stable and reliable structure, simultaneously realizes detachable function, and it is convenient for the installation, debugging, overhaul and replacement of monitoring instrument, and also facilitate the maintenance and reuse of protection mechanism itself.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit engineering technology, and in particular to a detachable protective device for special steel sheet piles. Background Technology

[0002] Among various support methods for foundation pit engineering, steel sheet piles offer fast construction speed, low cost, and small footprint. They can also simultaneously serve to retain soil, sand, and water to a certain extent. Furthermore, with the rapid development of urban construction, the construction requirements for foundation pit engineering, such as the impact on the surrounding environment and the required land area, are becoming increasingly stringent. Therefore, steel sheet pile support has been increasingly used in foundation pit engineering, especially in municipal foundation pit engineering, in recent years.

[0003] In some complex engineering environments, such as deep foundation pits or projects with strict requirements for deformation control, it is necessary to install various monitoring instruments (such as stress and displacement sensors) on steel sheet piles to monitor their working status in real time.

[0004] However, existing ordinary steel sheet piles lack special protection measures for these precision monitoring instruments. The instruments and their wiring are easily damaged by collisions, friction, or soil compression during pile driving, use, and subsequent construction, resulting in interruption or inaccuracy of monitoring data. At the same time, the wiring of the instruments is messy and inconvenient for inspection and maintenance. In addition, traditional protection methods are mostly welding or permanent fixing, which are difficult to adjust or reuse according to changes in monitoring needs. Therefore, a special detachable protection device for steel sheet piles is proposed to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes a special detachable protection device for steel sheet piles, which can provide reliable protection for monitoring instruments and is easy to install, disassemble and maintain.

[0006] (II) Technical Solution This utility model provides a detachable protective device for special steel sheet piles, including special steel sheet piles, with a steel outer shell protective mechanism inside the special steel sheet piles and a detection mechanism inside the special steel sheet piles.

[0007] The steel outer shell protection mechanism includes a steel outer shell protection plate located inside the special steel sheet pile. The steel outer shell protection plate is L-shaped, and two connecting strips are installed at the intersection with the special steel sheet pile. Both connecting strips are in contact with the inner side of the special steel sheet pile, and multiple fixing bolts that are threadedly connected to the special steel sheet pile are installed on the side of the two connecting strips away from the special steel sheet pile.

[0008] Preferably, the height of the steel outer shell protective plate is the same as the height of the special steel sheet pile.

[0009] Preferably, the steel outer shell protective plate includes a protective section and a tapered transition section. The protective section and the special steel sheet pile form a protective cavity. A data transmission line is installed inside the protective cavity, and multiple data interfaces are provided on the data transmission line.

[0010] Preferably, the tapered transition section is located at the bottom of the protective section and has the same top cross-sectional area, and the tapered transition section and the protective section are integrally welded together.

[0011] Preferably, the right side of the protection section has a plurality of evenly distributed wire holes that extend into the protection cavity.

[0012] Preferably, the testing mechanism includes a pile body monitoring instrument and an earth pressure monitoring instrument. The pile body monitoring instrument is detachably installed inside the special steel sheet pile and located inside the protective cavity. The earth pressure monitoring instrument is detachably installed inside the special steel sheet pile and located on the right side of the protective section.

[0013] Preferably, both the pile monitoring instrument and the earth pressure monitoring instrument are electrically connected to the data interface via wires, and the wires on the earth pressure monitoring instrument pass through the corresponding wire holes.

[0014] Preferably, conventional steel sheet piles are clamped to both sides of the special steel sheet pile.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: 1. The detachable protective device of this special steel sheet pile provides robust physical protection for the monitoring instruments and lines installed on the steel sheet pile by setting up a steel shell protection mechanism. This effectively avoids damage caused by external impact, friction or soil compression during pile driving and subsequent use, and ensures the continuity and accuracy of monitoring data.

[0016] 2. The detachable protective device for this special steel sheet pile has a steel outer shell protective plate connected to the special steel sheet pile body through connecting strips and fixing bolts. The structure is stable and reliable, and at the same time, it realizes the detachable function, which facilitates the installation, debugging, maintenance and replacement of monitoring instruments, and also facilitates the maintenance and reuse of the protection mechanism itself, thus improving the flexibility of use.

[0017] 3. The special steel sheet pile has a detachable protective device. Various types of monitoring instruments can be installed on the special steel sheet pile to form a complete detection system. It can be used in conjunction with conventional steel sheet piles during the construction of the steel sheet pile to achieve rapid deployment of foundation pit monitoring. At the same time, after the construction is completed, the convenient recycling characteristics of the steel sheet pile can be used to quickly recover it during the steel sheet pile dismantling work, which greatly reduces the monitoring deployment time and cost. Attached Figure Description

[0018] Figure 1This is a structural schematic diagram of a special detachable protective device for steel sheet piles proposed in this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the special steel sheet pile and the steel outer shell protection mechanism in the detachable protection device for special steel sheet piles proposed in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the special steel sheet pile, data transmission line, and detection mechanism in the detachable protection device for special steel sheet piles proposed in this utility model.

[0021] Figure 4 This is a top view of a special steel sheet pile combined with a conventional steel sheet pile in a detachable protective device for special steel sheet piles proposed in this utility model.

[0022] Reference numerals: 1. Special steel sheet pile; 2. Steel outer shell protection mechanism; 21. Steel outer shell protection plate; 211. Protection section; 212. Conical transition section; 22. Connecting strip; 23. Fixing bolt; 24. Protective cavity; 25. Data transmission line; 3. Detection mechanism; 31. Pile body monitoring instrument; 32. Earth pressure monitoring instrument; 4. Wiring hole; 5. Conventional steel sheet pile. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1-4 As shown, the present invention proposes a detachable protective device for special steel sheet piles, including a special steel sheet pile 1, a steel outer shell protection mechanism 2, and a detection mechanism 3.

[0027] Example 1: The steel outer shell protection mechanism 2 mainly includes a steel outer shell protection plate 21, a connecting strip 22, and fixing bolts 23.

[0028] The steel outer shell protective plate 21 is L-shaped in general, and its height is the same as that of the special steel sheet pile 1.

[0029] The steel outer shell protective plate 21 is integrally welded from the upper vertical protective section 211 and the lower tapered transition section 212. Two connecting strips 22 are respectively fixedly installed on the vertical edge of the steel outer shell protective plate 21, that is, the part that contacts the inner wall of the special steel sheet pile 1. Each connecting strip 22 has multiple through holes spaced apart in the vertical direction. After the fixing bolts 23 pass through these threaded holes, they cooperate with the pre-set threaded holes on the body of the special steel sheet pile 1 and are tightened, thereby firmly but detachably installing the entire steel outer shell protective plate 21 inside the special steel sheet pile 1.

[0030] The protective section 211 and the inner wall of the special steel sheet pile 1 together form a longitudinal protective cavity 24. The tapered transition section 212 is used to reduce the cross-sectional area of ​​the pile end during construction, thereby reducing construction resistance.

[0031] A data transmission line 25 is laid inside the protective cavity 24. The line is equipped with multiple standard data interfaces, and each data interface is equipped with waterproof sealing measures, such as waterproof connectors.

[0032] On the right side wall of the protective section 211, a plurality of wire holes 4 are evenly provided along its height direction. These wire holes 4 communicate with the interior of the protective cavity 24.

[0033] Example 2: The testing mechanism 3 includes a pile body monitoring instrument 31 and an earth pressure monitoring instrument 32.

[0034] The pile body monitoring instrument 31 is detachably installed on the inner wall of the special steel sheet pile 1 and located inside the protective cavity 24, directly protected by the steel shell.

[0035] The earth pressure monitoring instrument 32 is also detachably installed on the inner wall of the special steel sheet pile 1. However, since the earth pressure monitoring instrument 32 must be in direct contact with the soil layer, its installation position corresponds to the right side of the protective section 211 of the steel outer shell protective plate 21, and is used to sense the pressure of the outer soil.

[0036] The lead wires of the pile body monitoring instrument 31 and the earth pressure monitoring instrument 32 are respectively connected to the data interface on the data transmission line 25.

[0037] The wires of the earth pressure monitoring instrument 32 need to pass through the corresponding wire hole 4 into the protective cavity 24 before being connected.

[0038] Through the data interface, the data transmission line 25 supplies power to the pile body monitoring instrument 31 and the earth pressure monitoring instrument 32 installed on the pile body, and integrates the monitoring data of each instrument to the ground surface, effectively reducing the number and length of lines in the retaining space, and avoiding the situation that a separate line must be laid to the ground surface for each pile body monitoring instrument 31 or earth pressure monitoring instrument 32.

[0039] In Example 3, multiple evenly distributed wire holes 4 can be used to pass the wires through the reserved wire holes 4 when the soil pressure monitoring instruments 32 are arranged at different depths. In addition, when it is necessary to monitor pore water pressure, the pore water pressure monitoring instrument can be installed in the enclosure space. The reserved slot 122 allows soil water to flow smoothly into the enclosure space, thereby accurately obtaining pore water pressure data.

[0040] Example 4: Before the construction of the steel sheet pile support for the foundation pit, the required pile body monitoring instrument 31, earth pressure monitoring instrument 32 and data transmission line 25 are determined according to the monitoring layout requirements, as well as the layout depth and spacing of the pile body monitoring instrument 31 and earth pressure monitoring instrument 32.

[0041] After the installation of the pile body monitoring instrument 31, the earth pressure monitoring instrument 32 and the data transmission line 25 is completed, the pile body monitoring instrument 31 and the data transmission line 25 are located inside the protective cavity 24 and can be simply fixed with temporary fixing measures such as glue. However, the earth pressure monitoring instrument 32 is not inside the protective cavity 24 and must be fixed inside the special steel sheet pile 1 with nuts and bolts.

[0042] All components can be quickly disassembled and assembled using simple methods, allowing for rapid changes to the arrangement of the pile body monitoring instrument 31 and the earth pressure monitoring instrument 32 on the special steel sheet pile 1. This enables quick switching between different engineering applications. Furthermore, if any component or instrument on the special steel sheet pile 1 malfunctions, normal operation can be restored simply by removing and replacing the faulty component or instrument. Each component and instrument is highly independent, achieving modular application.

[0043] If pore water pressure needs to be monitored, the corresponding sand or clay should be filled into the designated location within the enclosure space according to the backfill requirements around the pore water pressure monitoring instrument.

[0044] In Example 5, the special steel sheet pile 1 is provided with conventional locking structures on both sides for engaging with the conventional steel sheet piles 5 on both sides to form a continuous support wall.

[0045] During actual construction, special steel sheet piles 1 and conventional steel sheet piles 5 are used in combination according to the horizontal interval of the monitoring layout. For example, if the monitoring layout interval is 10m, one special steel sheet pile 1 is constructed every 10m, and a conventional steel sheet pile 5 is constructed between two special steel sheet piles 1.

[0046] Among them, the inner side of the special steel sheet pile 1 must face the outer side of the foundation pit to ensure that the soil pressure monitoring instrument 32 is in direct contact with the soil outside the support wall.

[0047] After the foundation pit support is completed, the special steel sheet pile 1, the steel shell protection mechanism 2, the testing mechanism 3, and the conventional steel sheet pile 5 can be pulled out and recycled together for easy reuse.

[0048] Working principle: The detachable protective device for this special steel sheet pile involves first removing the steel outer protective plate 21 using fixing bolts 23 before construction of the sheet pile-supported foundation pit. Then, based on the monitoring layout requirements, the necessary pile body monitoring instruments 31, earth pressure monitoring instruments 32, and data transmission lines 25 are determined, along with the layout depth and spacing of the pile body monitoring instruments 31 and earth pressure monitoring instruments 32. The pile body monitoring instruments 31, earth pressure monitoring instruments 32, and data transmission lines 25 are then quickly installed. Next, the placement of the special steel sheet pile 1 in the foundation pit is determined, ensuring that the inner side of the special steel sheet pile 1 faces the outer side of the foundation pit. Then, the initial... First, place the steel outer shell protective plate 21, and pass its wires through the wire hole 4 or directly connect it to the data transmission line 25 interface in the protective cavity 24. After the wire connection is completed, install the steel outer shell protective plate 21 with fixing bolts 23. Finally, according to the determined layout position of the special steel sheet pile 1, drive the special steel sheet pile 1 and the conventional steel sheet pile 5 into the ground together. At the same time, start monitoring of the steel sheet pile and the soil on the side of the pile. After the foundation pit construction is completed, the special steel sheet pile 1, the steel outer shell protective mechanism 2, the detection mechanism 3 and the conventional steel sheet pile 5 can be pulled out and recycled together for reuse.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable protective device for special steel sheet piles, characterized in that, Includes special steel sheet piles (1), the special steel sheet piles (1) are provided with a steel outer shell protection mechanism (2) inside, and a detection mechanism (3) is provided inside the special steel sheet piles (1); The steel outer shell protection mechanism (2) includes a steel outer shell protection plate (21) located inside the special steel sheet pile (1). The steel outer shell protection plate (21) is L-shaped, and two connecting strips (22) are installed at the intersection with the special steel sheet pile (1). Both connecting strips (22) are attached to the inner side of the special steel sheet pile (1). On the side of the two connecting strips (22) away from the special steel sheet pile (1), multiple fixing bolts (23) that are threadedly connected to the special steel sheet pile (1) are installed.

2. The detachable protective device for a special steel sheet pile according to claim 1, characterized in that, The height of the steel outer shell protective plate (21) is the same as the height of the special steel sheet pile (1).

3. The detachable protective device for a special steel sheet pile according to claim 1, characterized in that, The steel outer shell protective plate (21) includes a protective section (211) and a conical transition section (212). The protective section (211) and the special steel sheet pile (1) form a protective cavity (24). A data transmission line (25) is installed inside the protective cavity (24). Multiple data interfaces are provided on the data transmission line (25).

4. The detachable protective device for a special steel sheet pile according to claim 3, characterized in that, The tapered transition section (212) is located at the bottom of the protection section (211) and has the same top cross-sectional area. The tapered transition section (212) and the protection section (211) are integrally welded together.

5. The detachable protective device for a special steel sheet pile according to claim 3, characterized in that, The right side of the protection section (211) has a plurality of evenly distributed wire holes (4) that extend into the protection cavity (24).

6. The detachable protective device for a special steel sheet pile according to claim 3, characterized in that, The testing mechanism (3) includes a pile body monitoring instrument (31) and an earth pressure monitoring instrument (32). The pile body monitoring instrument (31) is detachably installed inside the special steel sheet pile (1) and located inside the protective cavity (24). The earth pressure monitoring instrument (32) is detachably installed inside the special steel sheet pile (1) and located on the right side of the protective section (211).

7. A detachable protective device for a special steel sheet pile according to claim 6, characterized in that, The pile body monitoring instrument (31) and the earth pressure monitoring instrument (32) are both electrically connected to the data interface via wires, and the wires on the earth pressure monitoring instrument (32) pass through the corresponding wire hole (4).

8. The detachable protective device for a special steel sheet pile according to claim 1, characterized in that, The special steel sheet pile (1) is clamped with conventional steel sheet piles (5) on both sides.

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