Open cut tunnel supporting structure with abnormity monitoring function

Abstract

The utility model discloses an open-cut tunnel supporting structure with an abnormity monitoring function, which is used for supporting a foundation pit in open-cut tunnel construction and comprises a plurality of blocking plates attached to the side wall of the foundation pit. The connecting parts are arranged on the side edges of the barrier plates and are used for connecting the two barrier plates; and the supporting rod is arranged on the connecting part in a sliding manner and is used for supporting the barrier plate and the connecting part. According to the utility model, a plurality of baffle plates can be sequentially fixed on the side wall of the foundation pit, then the floating anchor rod is horizontally inserted into the connecting part until the floating anchor rod is inserted into the soil layer of the side wall of the foundation pit to reinforce the baffle plates, and then the floating anchor rod is inserted into the soil layer of the side wall of the foundation pit when abnormal conditions such as floating, deviation or settlement occur in the soil layer of the side wall of the foundation pit. The floating anchor rod can deviate to drive the connecting ball head of the floating anchor rod to rotate, and due to the fact that the connecting ball head is provided with the deflection scales, a constructor can monitor a surrounding soil layer through the deflection scales and timely deal with abnormity.

Description

Technical Field

[0001] The utility model relates to the technical field of construction support structures, in particular to an open-cut tunnel support structure with an abnormality monitoring function. Background Art

[0002] The open excavation method is usually divided into two forms: unsupported slope excavation and foundation pit support excavation. When site conditions are limited, such as urban underground engineering construction, the foundation pit support excavation method is often used. Usually, in order to ensure the stability of the foundation pit side wall and the safety of adjacent buildings, it is necessary to take support and reinforcement measures for the foundation pit side wall, that is, to set up a foundation pit support structure, including supporting pile walls, support systems, purlins, anti-seepage curtains, soil nails and anchor rods. The safety of the foundation pit support structure is not only directly related to the success or failure of the constructed project, but also to the safety of adjacent constructed projects.

[0003] However, in the prior art, the support structure and function of the foundation pit are single and can only play a supporting role. It cannot detect factors such as the stability, deformation or groundwater infiltration of the foundation pit, and cannot provide timely feedback on potential dangers. There is room for improvement. Therefore, an open-cut tunnel support structure with an abnormality monitoring function is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an open-cut tunnel supporting structure with an abnormality monitoring function in view of the above-mentioned shortcomings.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: an open-cut tunnel support structure with an abnormality monitoring function, used for supporting the foundation pit in the open-cut tunnel construction, comprising:

[0006] A plurality of baffles, wherein the baffles are in contact with the side walls of the foundation pit;

[0007] A connecting portion, which is arranged on the side of the baffle plate and is used to connect the two baffle plates;

[0008] A support rod, which is slidably disposed on the connecting portion to support the baffle plate and the connecting portion;

[0009] Floating anchor rods, the number of which is multiple, and the multiple groups of floating anchor rods are movably arranged on a connecting part, the connecting part is provided with a spherical seating groove, the floating anchor rods include a locking rod extending to the inside of the soil layer on the side wall of the foundation pit and a connecting ball head adapted to the spherical seating groove, the floating anchor rods are used to be fixed to the soil layer on the side wall of the foundation pit and to display the floating and deformation of the soil layer through the connecting ball head.

[0010] Furthermore, a drainage hole is provided in the floating anchor rod, and the drainage hole penetrates the connecting ball head and extends into the locking rod;

[0011] The locking rod is provided with a water inlet hole which is connected with the drainage hole.

[0012] Furthermore, a fixing pin is provided at the bottom of the connecting portion, and the fixing pin is used to be inserted into the bottom of the foundation pit to fix the baffle plate and the connecting portion.

[0013] Furthermore, the two groups of baffle plates are fixedly connected by bolts, and bolt fixing holes are provided on a side of the baffle plate away from the connecting portion and on the connecting portion.

[0014] Furthermore, the support rod includes an inclined ground contact rod and an abutment portion for contacting the connection portion;

[0015] The abutment portion is provided with a limit rotation shaft, and the connection portion is provided with a limit sliding groove corresponding to the limit rotation shaft.

[0016] Furthermore, a laser calibration unit is provided on the abutment portion, and a trigger corresponding to the laser calibration unit is provided in the limiting slide groove, and the trigger is used to give an alarm when the foundation pit is tilted and deformed.

[0017] Furthermore, a deflection scale is provided on the connecting ball head.

[0018] The beneficial effects of the utility model are embodied in:

[0019] The utility model can sequentially fix a plurality of baffle plates on the side wall of the foundation pit, and then horizontally insert the floating anchor rod into the connection part and until it is inserted into the soil layer of the side wall of the foundation pit to reinforce the baffle plate. Then, when abnormal conditions such as floating, displacement or settlement occur inside the soil layer of the side wall of the foundation pit, the floating anchor rod will be displaced to drive the connecting ball head to rotate. Since the connecting ball head is provided with a deflection scale, the construction personnel can use the deflection scale to monitor the surrounding soil layer and deal with the abnormality in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation structure of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 3 It is a cross-sectional view of the utility model;

[0023] Figure 4 It is a front view of the cross-sectional structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the support rod structure of the utility model.

[0025] In the figure:

[0026] 01. Foundation pit;

[0027] 1. Barrier plate;

[0028] 2. Connecting part; 21. Fixing pin; 22. Limiting slide groove; 23. Ball placement groove;

[0029] 3. Support rod; 31. Ground contact rod; 32. Resistance part; 321. Position limiting shaft; 322. Laser calibration unit;

[0030] 4. Floating anchor rod; 41. Locking rod; 42. Connecting ball head; 43. Drain hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-5 The utility model discloses an open-cut tunnel support structure with an abnormality monitoring function, which is used for supporting a foundation pit 01 in open-cut tunnel construction, and comprises:

[0033] A plurality of baffle plates 1, wherein the baffle plates 1 are attached to the side walls of the foundation pit 01;

[0034] A connecting portion 2, which is arranged on the side of the baffle plate 1 and is used to connect the two baffle plates 1. In the above, the baffle plate 1 and the connecting portion 2 are integrally formed, or the connecting portion 2 and the baffle plate 1 are fixed by bolts or other connection methods;

[0035] A support rod 3, wherein the support rod 3 is slidably disposed on the connecting portion 2 to support the baffle plate 1 and the connecting portion 2;

[0036] Floating anchor rods 4, the number of the floating anchor rods 4 is multiple, and the multiple groups of floating anchor rods 4 are movably arranged on the connecting part 2, and a spherical seating groove 23 is opened on the connecting part 2. The floating anchor rods 4 include a locking rod 41 extending to the inside of the soil layer on the side wall of the foundation pit 01 and a connecting ball head 42 adapted to the spherical seating groove 23. The floating anchor rods 4 are used to be fixed to the soil layer on the side wall of the foundation pit 01 and to display the floating and deformation of the soil layer through the connecting ball head 42. In the present application, the spherical seating groove 23 is a hemispherical groove, which is used to facilitate the setting of the connecting ball head 42 of the floating anchor rod 4.

[0037] When the present application is in use, multiple barrier plates 1 can be fixed on the side walls of the foundation pit 01 in sequence, and then the floating anchor rod 4 can be horizontally inserted into the connecting part 2 until it is inserted into the soil layer of the side wall of the foundation pit 01 to reinforce the barrier plate 1. Then, when abnormal conditions such as floating, displacement or settlement occur inside the soil layer of the side wall of the foundation pit 01, the floating anchor rod 4 will be displaced, thereby driving its connecting ball head 42 to rotate. Since a deflection scale is provided on the connecting ball head 42, the construction personnel can use the deflection scale to monitor the surrounding soil layers and deal with the abnormalities in time.

[0038] It should be noted that a drainage hole 43 is provided in the floating anchor rod 4, and the drainage hole 43 penetrates the connecting ball head 42 and extends into the locking rod 41;

[0039] The locking rod 41 is provided with a water inlet hole connected to the drainage hole 43 .

[0040] Through the above-mentioned structural arrangement, during the use of the floating anchor rod 4, the groundwater inside the soil layer and the accumulated water between the side wall of the foundation pit 01 and the barrier plate 1 can be discharged through the drainage hole 43, thereby avoiding the adverse effects caused by excessive accumulation of water.

[0041] It is easy to imagine that a fixing pin 21 is provided at the bottom of the connecting portion 2 , and the fixing pin 21 is used to be inserted into the bottom of the foundation pit 01 to fix the baffle plate 1 and the connecting portion 2 .

[0042] In the present application, the two groups of baffle plates 1 are fixedly connected by bolts, and bolt fixing holes are provided on the side of the baffle plate 1 away from the connecting part 2 and on the connecting part 2 to facilitate the placement and fixation of the equipment. The specific setting method is that after one baffle plate 1 is placed on the side wall of the foundation pit 01 through the fixing pin 21, another baffle plate 1 is placed in contact with it and connected and fixed by bolts. After all the baffle plates 1 are installed, the corresponding floating anchor rods 4 are set for reinforcement and monitoring, and finally the support rods 3 are set for further reinforcement and monitoring.

[0043] In the present application, the support rod 3 includes an inclined ground contact rod 31 and an abutment portion 32 for contacting the connection portion 2;

[0044] The abutment portion 32 is provided with a limiting rotation shaft 321, the connection portion 2 is provided with a limiting slide groove 22 corresponding to the limiting rotation shaft 321, the abutment portion 32 is further provided with a laser calibration unit 322, and a trigger corresponding to the laser calibration unit 322 is provided in the limiting slide groove 22, and the trigger is used to sound an alarm when the foundation pit 01 is tilted or deformed.

[0045] Through the above-mentioned structural arrangement, due to the instability of the soil layer, when changes occur, the barrier plate 1 tilts as a whole. At this time, the support rod 3 is independently arranged relative to the barrier plate 1. When the above-mentioned situation occurs, the laser calibration unit 322 arranged on the support rod 3 and its position projected onto the barrier plate 1 will be offset. At this time, the trigger can alarm to remind the construction personnel that an abnormal situation has occurred in the barrier plate 1.

[0046] It should be further explained that the connecting ball head 42 is provided with a deflection scale or a deflection mark, and the deflection scale is evenly distributed on the connecting ball head 42 from small to large. At the same time, the color of the deflection mark is set from light to dark on the surface of the sphere to intuitively reflect the deflection angle of the floating anchor rod 4 to the user.

[0047] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0049] In addition, "plurality" means two or more.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An open-cut tunnel support structure with an abnormality monitoring function, used for supporting a foundation pit (01) in open-cut tunnel construction, characterized in that: include: A plurality of baffle plates (1), wherein the baffle plates (1) are in contact with the side walls of the foundation pit (01); A connecting portion (2), the connecting portion (2) being arranged on the side of the baffle plate (1) and being used to connect the two baffle plates (1); A support rod (3), wherein the support rod (3) is slidably disposed on the connecting portion (2) and is used to support the baffle plate (1) and the connecting portion (2); A floating anchor rod (4), wherein the floating anchor rod (4) is in a plurality of groups, and the plurality of groups of floating anchor rods (4) are movably arranged on a connecting portion (2), wherein a ball-shaped placement groove (23) is provided on the connecting portion (2), wherein the floating anchor rod (4) comprises a locking rod (41) extending into the soil layer on the side wall of a foundation pit (01) and a connecting ball head (42) adapted to the ball-shaped placement groove (23), wherein the floating anchor rod (4) is used to be fixed to the soil layer on the side wall of the foundation pit (01) and to display the floating and deformation of the soil layer through the connecting ball head (42).

2. The open-cut tunnel support structure with abnormality monitoring function according to claim 1, characterized in that: The floating anchor rod (4) is provided with a drainage hole (43), and the drainage hole (43) penetrates the connecting ball head (42) and extends into the locking rod (41); The locking rod (41) is provided with a water inlet hole which is connected to the drainage hole (43).

3. The open-cut tunnel support structure with abnormality monitoring function according to claim 1, characterized in that: A fixing pin (21) is provided at the bottom of the connecting portion (2), and the fixing pin (21) is used to be inserted into the bottom of the foundation pit (01) to fix the baffle plate (1) and the connecting portion (2).

4. The open-cut tunnel support structure with abnormality monitoring function according to claim 1, characterized in that: The two groups of baffle plates (1) are fixedly connected by bolts, and bolt fixing holes are provided on the side of the baffle plate (1) away from the connecting portion (2) and on the connecting portion (2).

5. The open-cut tunnel support structure with abnormality monitoring function according to claim 1, characterized in that: The support rod (3) comprises a ground contact rod (31) arranged obliquely and a contact portion (32) for contacting the connecting portion (2); A limit rotation shaft (321) is provided on the abutment portion (32), and a limit sliding groove (22) corresponding to the limit rotation shaft (321) is provided on the connection portion (2).

6. The open-cut tunnel support structure with abnormality monitoring function according to claim 5, characterized in that: The abutment portion (32) is also provided with a laser calibration unit (322), and a trigger corresponding to the laser calibration unit (322) is provided in the limiting slide groove (22), and the trigger is used to sound an alarm when the foundation pit (01) is tilted or deformed.

7. The open-cut tunnel support structure with abnormality monitoring function according to claim 1, characterized in that: The connecting ball head (42) is provided with a deflection scale.

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