Simulation device for measuring tunnel segment staggering

Abstract

The utility model discloses a simulation device used for measuring tunnel segment staggering, which is used for simulating a pipe jacking method to build a connection channel and comprises a main tunnel, a pipe jacking machine, a model box, a supporting seat and a sensor, the pipe jacking machine is arranged in the main tunnel, the model box is arranged on the periphery of the main tunnel, and the supporting seat is arranged on the supporting seat. The pipe jacking machine is used for penetrating through a through hole in the side face of a main tunnel to jack a connecting channel pipe piece into a model box to form a connecting channel, the supporting base is fixed outside the main tunnel, the sensors are connected with the supporting plate through installation pieces, the number of the sensors is at least two, and the sensing ends of the sensors are connected with the two sides of a pipe seam of the main tunnel respectively. According to the utility model, a foundation is provided for carrying out pipe jacking method connection channel construction, convenience is provided for carrying out subsequent specific analysis, the construction time and economic cost are saved, and the engineering quality safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a pipe jacking method tunnel construction technical field especially relates to a kind of simulation device for measuring tunnel segment misalignment. BACKGROUND

[0002] Adopt pipe jacking method to build contact passage is a new method in recent years, with safety, small pollution, short construction period and other advantages.Pipe jacking method contact passage as a new technology, many scholars are involved in the research, the current pipe jacking method contact passage is more for the research of contact passage construction equipment and method on site, such as patent No.

[0003] But when carrying out pipe jacking method contact passage on site, limit jacking force, pre-supporting force and jacking force coordination relationship and the influence of different section forms on main tunnel structure need to be determined by on-site multiple attempts, leading to long construction time and poor effect. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of simulation device for measuring tunnel segment misalignment, solve the problem that limit jacking force, pre-supporting force and jacking force coordination relationship and the influence of different section forms on main tunnel structure need to be determined by on-site multiple attempts in prior art.

[0005] The utility model is realized in this way, a kind of simulation device for measuring tunnel segment misalignment, for simulating pipe jacking method contact passage, including main tunnel, pipe jacking machine, model box, support seat and sensor, the pipe jacking machine is placed in main tunnel, the model box is located in the outer periphery of main tunnel, the pipe jacking machine is used to pass through the through-hole of the side of main tunnel and form contact passage by toping into model box with contact passage segment, the support seat is fixed to the outside of main tunnel, the sensor is connected with support plate by mounting piece, the sensor is at least two and inductive end is respectively connected with the two sides of the main tunnel pipe joint.

[0006] When a tunnel is built, a main tunnel is generally built first, and then a connecting channel is built between the main tunnel, and when the connecting channel is built by using a pipe jacking method, a pipe jacking machine is generally placed in the main tunnel, the upper and lower sides and the two sides of the pipe jacking machine are in contact with the inner wall of the main tunnel, and then a pipe piece of the connecting channel is sequentially jacked into a through hole at the side of the main tunnel through driving of the pipe jacking machine, so that the connecting channel is formed, and in this process, the influence of the driving force on the structure of the main tunnel is considered to avoid irreversible damage to the main tunnel; in view of the problem that the prior art needs to be tried on site many times to determine the limit jacking force, the pre-supporting force and the jacking force coordination relationship and the influence of different section forms on the structure of the main tunnel, the utility model adopts a simulation method to study the above technical problems, the pipe jacking machine is placed in the main tunnel, a support seat for installing a sensor is fixed outside the main tunnel by using a mounting piece, the sensing end of the sensor is connected with the two sides of the pipe joint of the main tunnel, and the main tunnel deformation in the process of building the connecting channel by using the pipe jacking method can be sensed by the sensor, so that the utility model provides a basis for carrying out the pipe jacking method connecting channel construction and facilitates subsequent specific analysis, helps to save construction time and economic cost, and improves engineering quality and safety.

[0007] In the prior art, more researches are carried out on the pipe jacking method connecting channel field test and field monitoring, but as for the design that the support seat is fixed outside the main tunnel, this cannot be achieved on site because the main tunnel is long on site, and it is difficult to guarantee the stability of the support seat, and if the support seat for installing the sensor is fixed in the main tunnel, the support seat itself will generate errors along with the deformation of the main tunnel, and in the simulation experiment of the utility model, the problem encountered on site can be well solved, and the amount of the tunnel pipe piece is accurately simulated.

[0008] The simulation device of the utility model relies on a scale model design of an actual project, designs the pipe jacking machine, the pipe piece of the main tunnel and the model box, provides a device and a method for measuring the pipe piece deviation of the main tunnel in the process of the connecting channel pipe jacking method construction model test, aims to carry out the pipe jacking method connecting channel test, can study the limit jacking force of the main tunnel structure, the pre-supporting force and the jacking force coordination relationship and the influence of different section forms on the structure of the main tunnel, and realizes the monitoring of the pipe piece deviation deformation.

[0009] The further technical scheme of the utility model is that the support seat is placed at the two ends outside the main tunnel, and the mounting piece is placed between the support seats and is used for connecting the sensor.

[0010] The further technical scheme of the utility model is that the sensor is a wire displacement sensor, and the sensor comprises a main body and a connector connected with the main body, the connector is connected with the inner wall of the main tunnel, and the main body is placed on the connector.

[0011] The further technical scheme of the utility model is that the sensor is arranged on the same side of the inner wall of the main tunnel.

[0012] The further technical scheme of the utility model is: the pipe jacking machine includes pre-supporting plate and pipe jacking drive on the pre-supporting plate, and the pipe jacking drive is used for jacking the pipe piece of the connecting channel into the model box from the through hole of the main tunnel to form the connecting channel.

[0013] The further technical scheme of the utility model is: the pre-supporting plate is equipped with the hole for the induction end of the sensor.

[0014] The further technical scheme of the utility model is: the pre-supporting plate includes the arc-shaped upper pre-supporting plate, lower pre-supporting plate, first side pre-supporting plate and second pre-supporting plate, the upper pre-supporting plate is symmetrically arranged with the lower pre-supporting plate, the first side pre-supporting plate is symmetrically arranged with the second pre-supporting plate, the pipe jacking drive is arranged on the first side pre-supporting plate, and the second pre-supporting plate is arranged on the both sides of the through hole of the main tunnel.

[0015] The further technical scheme of the utility model is: the model box on the side of the main tunnel is equipped with the counterforce supporting piece.

[0016] The further technical scheme of the utility model is: the both sides of the model box are equipped with the connecting lug, and the bottom of the model box is equipped with the pulley.

[0017] The utility model also provides a kind of simulation method for measuring tunnel segment misalignment, and the method comprises the following steps:

[0018] Step one, according to the simulation device is assembled;

[0019] Step two, pipe jacking machine action jacks the pipe piece of connecting channel into model box, and sensor monitors the deformation data of the both sides of the segment joint of main tunnel, and the deformation data is transmitted to processor to obtain tunnel segment misalignment amount.

[0020] The utility model has the beneficial effects: the utility model uses simulation to study the above technical problem, and the pipe jacking machine is arranged in the main tunnel, the support seat of sensor is fixed outside the main tunnel by mounting piece, the induction end of sensor is connected with the both sides of main tunnel pipe joint, the misalignment deformation of main tunnel when connecting channel is constructed by pipe jacking method can be sensed by sensor, so that the utility model provides basis for carrying out connecting channel construction by pipe jacking method, provides convenience for carrying out subsequent specific analysis, helps to save construction time and economic cost, and improves engineering quality and safety.

[0021] The prior art has more related researches on the field test and field monitoring of the pipe jacking method, but the design of fixing the support seat outside the main tunnel cannot be realized in the field, because the main tunnel is long in the field, and it is difficult to guarantee the stability of the support seat, and if the support seat for installing the sensor is fixed in the main tunnel, the support seat itself will generate errors with the deformation of the main tunnel, and in the simulation experiment of the utility model, the problem encountered in the field can be well solved, and the incorrect table amount of the tunnel segment can be accurately simulated. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the arrangement of the main tunnel and the connecting tunnel provided by the utility model;

[0023] Figure 2 is a structural schematic view of the model box cooperating with the main tunnel provided by the utility model;

[0024] Figure 3 is a structural schematic view of the counterforce supporting piece of the model box provided by the utility model;

[0025] Figure 4 is a structural schematic view of the main tunnel segment provided by the utility model;

[0026] Figure 5 is a schematic view of the pipe segment splicing and connecting of the main tunnel and the connecting tunnel T joint part provided by the utility model;

[0027] Figure 6 is a structural schematic view of the pipe jacking machine provided by the utility model;

[0028] Figure 7 is a structural schematic view of the rectangular sleeve inside the pipe jacking machine provided by the utility model;

[0029] Figure 8 is a structural schematic view of the circular sleeve inside the pipe jacking machine provided by the utility model;

[0030] Figure 9 is a layout view of the hole on the first side pre-supporting plate inside the main tunnel provided by the utility model;

[0031] Figure 10 is a layout view of the hole on the second side pre-supporting plate inside the main tunnel provided by the utility model;

[0032] Figure 11 is a sensor layout view inside the main tunnel provided by the utility model.

[0033] REFERENCE SIGNS: 1. main tunnel,

[0034] 2. Jacking machine, 21. Upper pre-supporting plate, 22. Lower pre-supporting plate, 23. First side pre-supporting plate, 24. Second side pre-supporting plate, 25. Jacking drive,

[0035] 3. Model box, 31. Connecting lug, 32. Pulley, 33. Counterforce support,

[0036] 4. Support base, 42. Mounting,

[0037] 5. Sensor, 51. Main body, 52. Joint,

[0038] 6. Communication passage,

[0039] 7. Upper supporting plate, 8. Lower supporting plate, 9. Sleeve, 101. Bolt, 112. Support, 13. Standard block, 15. Lining block, 14. Capping block, 18. Steel bar, 19. First connecting block, 20. Through hole, 21. Longitudinal bar, 22. Wall supporting plate, 23. Second connecting block, 26. Lower supporting member, 27. Inclined supporting plate,

[0040] X. Axis center direction of the first side pre-supporting plate, Y. Axis center direction of the second side pre-supporting plate. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application.

[0042] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the specification are only for the convenience of clear description, and are not used to limit the scope of the implementation of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the implementation of the present application.

[0043] Example 1:

[0044] Figures 1-11Analog device for measuring tunnel segment misalignment is shown, which is used for simulating the construction of contact passage by pipe jacking method, comprising a main tunnel 1, a pipe jacking machine 2, a model box 3, a support base 4 and a sensor 5, the pipe jacking machine 2 is arranged in the main tunnel 1, the model box 3 is arranged on the outer periphery of the main tunnel 1, the pipe jacking machine 2 is used for jacking the contact passage segment into the model box 3 through the through hole on the side of the main tunnel 1 to form a contact passage 6, the support base 4 is fixed on the outer side of the main tunnel 1, the sensor 5 is connected with the support base 4 through a mounting part 42, and the sensor 5 is at least two and the sensing ends are respectively connected with the two sides of the joint of the main tunnel 1.

[0045] When the tunnel is constructed, generally, the main tunnel is constructed first, and then the contact passage is constructed between the main tunnels, and when the contact passage is constructed by the pipe jacking method, generally, the pipe jacking machine is arranged in the main tunnel, the upper and lower sides of the pipe jacking machine are in contact with the inner wall of the main tunnel, and then the contact passage segment is jacked into the main tunnel from the through hole on the side of the main tunnel in sequence by the driving of the pipe jacking machine, so that the contact passage is formed, and in the process, the influence of the driving force on the structure of the main tunnel is considered to avoid irreversible damage to the main tunnel; in view of the problem that the existing technology needs to be tried on site many times to determine the limit jacking force, the pre-supporting force and the jacking force coordination relationship and the influence of different section forms on the structure of the main tunnel, the utility model adopts the simulation method to study the above technical problems, the pipe jacking machine is arranged in the main tunnel, the support base for installing the sensor is fixed on the outer side of the main tunnel, the sensing end of the sensor is connected with the two sides of the joint of the main tunnel, and the misalignment deformation of the main tunnel during the construction of the contact passage by the pipe jacking method can be sensed by the sensor, so that the utility model provides a basis for the construction of the contact passage by the pipe jacking method, provides convenience for subsequent specific analysis, helps to save the construction time and economic cost, and improves the engineering quality and safety.

[0046] In the prior art, more researches are carried out on the field test and field monitoring of the contact passage by the pipe jacking method, but as for the design that the support base is fixed on the outer side of the main tunnel, this cannot be achieved on site because the main tunnel is long on site, and it is difficult to ensure the stability of the support base, and if the support base for installing the sensor is fixed in the main tunnel, the support base itself will generate errors along with the deformation of the main tunnel, and in the simulation experiment of the utility model, the problem encountered on site can be well solved, and the misalignment amount of the tunnel segment can be accurately simulated.

[0047] The simulation device of the utility model is designed according to the scale model of the actual project, the pipe jacking machine, the segment of the main tunnel and the model box are designed, a device and a method for measuring the misalignment of the segment of the main tunnel in the model test process of the contact passage construction by the pipe jacking method are provided, and the device and the method are used for carrying out the test of the contact passage by the pipe jacking method, the limit jacking force of the main tunnel structure, the pre-supporting force and the jacking force coordination relationship and the influence of different section forms on the structure of the main tunnel can be researched, and the deformation of the segment misalignment can be monitored.

[0048] In the embodiment, the pipe jacking machine for the construction of the connecting passage in the field of actual engineering is designed and simulated in a scale of 1:6.875, which can simulate the actual construction conditions and study the effects of different jacking forces, pre-supporting forces, different section sizes and forms on the main tunnel structure.

[0049] In the embodiment, the main tunnel is mainly composed of main tunnel segments, and the segments used for the main tunnel segments and the connecting passage segments are mainly divided into reinforced concrete segments and reinforced concrete composite segments. Among them, the reinforced concrete segment is the most commonly used segment in the pipe jacking method. It is composed of steel and concrete and has good strength and durability. First, the mold of the segment is manufactured, and then the manufacturer is contacted for production. The reinforced concrete composite segment has good strength and stability and is suitable for areas with complex geological conditions.

[0050] In the embodiment, the support seat 4 is placed at the two ends outside the main tunnel 1, and the mounting member 42 is placed between the support seats 4 for connecting the sensor 5. The mounting member passes through the inside of the main tunnel and is connected with the support plates at both ends, and then the sensor is mounted on the mounting member. The position of the sensor is fixed and has high stability.

[0051] In the embodiment, the sensor 5 is a pull-wire displacement sensor, which includes a main body 51 and a connector 52 connected with the main body 51. The connector 52 is connected with the inner wall of the main tunnel 1, and the main body 51 is placed on the connecting member 42.

[0052] In the embodiment, after the main tunnel and the pipe jacking machine are in place, the support seat and the mounting member are installed. Since the data to be measured for the segment misalignment is displacement, it is necessary to ensure that the position of the support seat is fixed. Therefore, the support seat is independently provided, and then fixed outside the main tunnel after passing through the center of the main tunnel through the mounting member. The sensor can be installed on the mounting seat to monitor the change in displacement.

[0053] In the embodiment, the mounting member is cylindrical, and the pull-wire displacement sensor is installed on the mounting member. The main body is at the center of the cylinder, and the monitoring head of the sensor for sensing the displacement change area is connected with the main tunnel segment. The displacement change amount of the segment is measured along the radial direction. Pull-wire displacement sensors are provided on both sides of the segment joint, and the segment misalignment amount can be obtained by subtracting the obtained values.

[0054] In the embodiment, the sensor 5 is arranged on the same side of the inner wall of the main tunnel 1. The sensors are arranged on the adjacent two segments and close to the joint. The two sensors are arranged on the same horizontal line.

[0055] As other embodiments, a plurality of sensors are sequentially arranged on both sides of the joint. The misalignment amount of the tunnel segment can be better measured.

[0056] In the embodiment, the jacking machine 2 comprises a pre-supporting plate and a jacking drive 25 arranged on the pre-supporting plate, the jacking drive 25 being used to jacking the connecting channel pipe piece from the through hole of the main tunnel 1 into the model box 3 to form the connecting channel 6.

[0057] In the embodiment, the pre-supporting plate is provided with a hole for the sensing end of the sensor 5 to pass through.

[0058] In the embodiment, the pre-supporting plate comprises an upper pre-supporting plate 21, a lower pre-supporting plate 22, a first side pre-supporting plate 23 and a second pre-supporting plate 24, the upper pre-supporting plate 21 and the lower pre-supporting plate 22 are symmetrically arranged, the first side pre-supporting plate 23 and the second pre-supporting plate 24 are symmetrically arranged, the jacking drive 25 is arranged on the first side pre-supporting plate 23, and the second pre-supporting plate 24 is arranged on both sides of the through hole of the main tunnel 1.

[0059] In the embodiment, the pre-supporting plate is respectively provided with four hydraulic oil cylinders, and the four groups of hydraulic oil cylinders are uniformly controlled to jacking, so that the jacking force is more uniform, and damage to the main tunnel pipe piece caused by uneven jacking force is prevented. The upper pre-supporting plate, the lower pre-supporting plate and the connecting rod for connecting the upper pre-supporting plate and the lower pre-supporting plate are the frame of the whole experimental device, and play a role of bearing support. The control part is mainly divided into three groups: the first side pre-supporting plate and the second side pre-supporting plate control part, the upper pre-supporting plate and the lower pre-supporting plate hydraulic oil cylinder control part, and the jacking drive control part. The first side pre-supporting plate and the second side pre-supporting plate control part and the upper pre-supporting plate and the lower pre-supporting plate hydraulic oil cylinder control part are respectively controlled by using the "total-distributed" mode.

[0060] In the embodiment, the first side pre-supporting plate is provided with holes at the center of both sides of the pipe joint of the main tunnel pipe piece, so as to arrange the sensor through the first side pre-supporting plate.

[0061] In the embodiment, the second side pre-supporting plate is provided with holes at the center of both sides of the pipe joint of the main tunnel pipe piece, so as to arrange the sensor through the second side pre-supporting plate; the second side pre-supporting plate comprises two.

[0062] As other embodiments, the holes on the first side pre-supporting plate and the second side pre-supporting plate are designed as follows: the pre-supporting plate is provided with holes with a length of 4 cm and a diameter of 3 cm at the center of both sides of the pipe joint, so as to arrange the sensor through the pre-supporting plate.

[0063] In the embodiment, the model box 3 on one side of the main tunnel 1 is provided with a counterforce supporting piece 33.

[0064] In the embodiment, the model box 3 is provided with connecting ears 31 on both sides, and the model box 3 is provided with pulleys 32 at the bottom.

[0065] In the embodiment, the model box has a length of 7m along the main tunnel extension direction, a length of 4m along the jacking connection channel direction, a height of 4m, and a steel material along the jacking direction of the pipe jacking driving, and the other two sides are transparent acrylic plates, and the bottom is a steel material.

[0066] Embodiment two:

[0067] A simulation method for measuring the misalignment of a tunnel segment, the method comprising the following steps:

[0068] Step one, assemble the simulation device according to embodiment one;

[0069] Step two, the pipe jacking machine 2 drives the connection channel segment into the model box 3, the sensor 5 monitors the deformation data on both sides of the segment joint of the main tunnel 1, and transmits the deformation data to the processor to obtain the misalignment amount of the tunnel segment.

[0070] Figure 1 It is a schematic diagram of the distribution relationship between the main tunnel and the connection channel simulated by the test device of the utility model, 1 is the main tunnel, 6 is the connection channel, and the T joint part of the main tunnel and the connection channel is specially designed.

[0071] Figure 2 It is a schematic diagram of the model box of the test device of the utility model. The model box is composed of wall support plates 22, the wall support plates 22 are used for enclosing the whole device space, the wall support plates 22 are connected by second connecting blocks 23, the second connecting blocks 23 are used for fixing the model box wall support plates, and the design of the connecting ears can be hooked by using a chain to move when the device needs to be moved, and the device can be moved by pushing the box body through a pulley, and the box body is moved under the action of the pulley when the device needs to be moved for a short distance.

[0072] Figure 3 It is a schematic diagram of the counterforce support of the model box of the utility model. Since the test device will apply a jacking force in the process of simulating the connection channel, a counterforce needs to be applied to counteract the force. The counterforce support of the utility model is arranged on the model box and is used to counteract the jacking force from the horizontal direction. The counterforce support includes a lower support 26 and an inclined support plate 27, the lower support 26 can be embedded in the soil, and the inclined support plate 27 can be fixed on the horizontal plane.

[0073] Figure 4 It is a schematic diagram of the main tunnel segment of the utility model, which is a ring segment of the main tunnel, the different ring segments are assembled by misalignment, each ring segment is divided into six splicing blocks, the number 13 is a standard block of the main tunnel segment, the number 14 is a top sealing block of the main tunnel segment, and the number 15 is a lining block of the main tunnel segment. One ring segment is connected by six blocks, which can ensure the stability and integrity of the structure and restore the actual working condition to the greatest extent.

[0074] Figure 5 The utility model test device simulation main tunnel and liaison channel T joint part schematic diagram. This place has 6 pieces of pipe piece in total, set up as composite pipe piece, namely pipe piece adopts steel structure, carries out reinforcement inside, adopts concrete and pours to constitute;Specifically including the steel bar 18 of composite pipe piece place belongs to, the first connecting block 19 between pipe piece, the through hole 20 on main tunnel. The pipe piece between different rings and the pipe piece between ring and ring are connected through the setting first connecting block. Meanwhile, the pipe piece is reinforced inside to guarantee the mechanical property of structure;The cross muscle and longitudinal muscle 21 are arranged between each pipe piece to enhance the strength of pipe piece. The pipe piece is connected through the first connecting block 19 between pipe piece.

[0075] As shown in Figure 6 , the first side pre-supporting plate and the second side pre-supporting plate are connected with the horizontal hydraulic cylinder through flanges, and the horizontal hydraulic cylinder provides horizontal pre-supporting force for the first side pre-supporting plate and the second side pre-supporting plate. An upper supporting plate 7 and a lower supporting plate 8 are arranged between the upper pre-supporting plate and the lower pre-supporting plate, and the upper supporting plate 7 and the lower supporting plate 8 are connected with flanges of the hydraulic cylinder for applying vertical pre-supporting force, thereby providing support for the whole device. In the utility model, four horizontal hydraulic cylinders form a group, and four vertical hydraulic cylinders form a group, which are controlled as a whole, so as to facilitate the application of hydraulic cylinders with equal size and uniformity in the horizontal or vertical direction.

[0076] As shown in Figure 7 , 8 , it is a schematic diagram of a pipe jacking machine pushing part simulated by the test device of the utility model, the lower pre-supporting plate is used to be attached to the bottom pipe piece of the main tunnel and provide pre-supporting force, the pipe jacking drive is a jack, the jack is connected with the lower supporting plate 8, the lower supporting plate 8 is attached to the first side pre-supporting plate to provide pushing force, the pipe jacking end of the jack is provided with a sleeve 9, the sleeve 9 is used for sleeving the liaison channel pipe piece, and a support 112 is arranged below the jack for supporting; when starting to work, the jack applies pushing force, is attached to the main tunnel pipe piece to provide pushing force, and provides a reaction force to the sleeve 9 part, and the liaison channel pipe piece is pushed forward under the action of the pushing force.

[0077] As shown in Figure 7 , 8 , it is a schematic diagram of a pipe jacking machine pushing part simulated by the test device of the utility model, the pipe jacking drive is connected with the first side pre-supporting plate through bolts 101, a support 112 is arranged below the pipe jacking drive, the output end of the pipe jacking drive can be used to connect a circular sleeve or a rectangular sleeve, the liaison channel with different sections is selected to be pushed, and a certain position space is reserved in the sleeve for storing soil.

[0078] Figures 9-10It is the structure schematic view of the pre-supporting plate in the main tunnel and the pipe jacking machine in the utility model, other structures in the pipe jacking machine are saved, the structure in the main tunnel is convenient to observe, and the opening of the pre-supporting plate on the pipe jacking machine is more convenient to see when arranging the sensor.

[0079] Figure 11 It is the sensor layout diagram of the utility model test device, the joint is fixed at the both sides of the pipe piece pipe joint of the main tunnel after being pulled out from the sensor, the actual construction is simulated, when the pipe piece is deformed, the pull-wire type displacement sensor will also be changed, thereby the displacement of the both sides of the pipe piece pipe joint of the main tunnel can be measured, and the difference between the data changes of the both is the size of the pipe piece joint.

[0080] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A simulation device for measuring misalignment of tunnel segments for simulating the construction of a cross passage using pipe jacking, characterized in that: The utility model relates to a kind of contact channel pipe jacking machine, including main tunnel (1), pipe jacking machine (2), model box (3), support seat (4) and sensor (5), the pipe jacking machine (2) is placed in main tunnel (1), the model box (3) is located in the periphery of main tunnel (1), the pipe jacking machine (2) is used to pass through the through hole of the side of main tunnel (1) and form contact channel (6) into model box (3) by contact channel pipe piece, the support seat (4) is fixed to the outside of main tunnel (1), the sensor (5) is connected with support seat (4) by mounting piece (42), the sensor (5) is at least two and inductive end is connected with the both sides of the pipe joint of main tunnel (1) respectively.

2. The analog device for measuring the misalignment of the tunnel segment according to claim 1, wherein: The support seat (4) is placed at both ends outside main tunnel (1), and mounting piece (42) is placed between support seat (4) for connecting the sensor (5).

3. The analog device for measuring misalignment of tunnel segments according to claim 1, wherein, The sensor (5) is a pull-wire displacement sensor, including a main body (51) and a connector (52) connected to the main body (51), the connector (52) is connected to the inner wall of the main tunnel (1), and the main body (51) is placed on the mounting piece (42).

4. The analog device for measuring misalignment of tunnel segments according to claim 1, wherein, The sensor (5) is arranged on the same side of the inner wall of the main tunnel (1).

5. The analog device for measuring misalignment of tunnel segments according to claim 1, wherein: The pipe jacking machine (2) includes a pre-supporting plate and a pipe jacking drive (25) placed on the pre-supporting plate, and the pipe jacking drive (25) is used to jack the contact channel pipe piece from the through hole of the main tunnel (1) into the model box (3) to form the contact channel (6).

6. The analog device for measuring misalignment of tunnel segments according to claim 5, wherein: The pre-supporting plate is provided with a hole for the inductive end of the sensor (5) to pass through.

7. The analog device for measuring misalignment of tunnel segments according to claim 5, wherein: The pre-supporting plate includes an arc-shaped upper pre-supporting plate (21), a lower pre-supporting plate (22), a first side pre-supporting plate (23), and a second pre-supporting plate (24), the upper pre-supporting plate (21) and the lower pre-supporting plate (22) are symmetrically arranged, the first side pre-supporting plate (23) and the second pre-supporting plate (24) are symmetrically arranged, the pipe jacking drive (25) is placed on the first side pre-supporting plate (23), and the second pre-supporting plate (24) is placed on both sides of the through hole of the main tunnel (1).

8. The analog device for measuring misalignment of tunnel segments according to claim 1, wherein: The model box (3) on one side of the main tunnel (1) is provided with a counter-force supporting member (33).

9. The analog device for measuring misalignment of tunnel segments according to claim 1, wherein: The model box (3) is provided with connecting ears (31) on both sides, and the bottom of the model box (3) is provided with a pulley (32).

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