Multifunctional framed bent structure for tunnel construction and construction method

Abstract

The invention discloses a multifunctional bent frame structure for tunnel construction and a construction method, and relates to the technical field of tunnel construction.The multifunctional bent frame structure comprises a walking chassis part, the walking chassis part comprises a chassis main beam, a driven wheel is installed at one end of the chassis main beam, a driving wheel is installed at the other end of the chassis main beam, and a bent frame framework part is installed at the upper end of the chassis main beam; the upper surface of the framed bent framework part is provided with a framed bent working platform part, and the upper surface of the framed bent working platform part is provided with a framed bent water spraying and steam curing part; the car washing platform further comprises a car washing platform bottom washing part which is located on the ground between the opposite faces of the chassis main beam. According to the multifunctional framed bent structure for tunnel construction and the construction method, a traditional construction auxiliary framed bent and a traditional flushing framed bent are combined into a multifunctional framed bent, and the construction function requirements of all working procedures of construction, detection, decoration, installation, grouting, maintenance, dust falling and flushing are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to a multifunctional bent structure for tunnel construction and a construction method. BACKGROUND

[0002] Traditional tunnel construction detection decoration installation grouting curing dust fall flushing bent process and malady:

[0003] 1. Detection bent: The tunnel construction site needs a third-party detection unit to conduct radar non-destructive testing on the quality of the initial support and lining, check whether the thickness, strength and structure of the masonry meet the design requirements, and use detection auxiliary bent for detection. The process malady is: 1) The top platform of the detection bent is 1-3 square meters, and the working height is 4-12 meters. The self-made detection bent is commonly used on site, and the processing and installation quality is uneven, which poses a risk to the safety of the bent structure quality; 2) In order to facilitate the movement of the bent, a loader is commonly used as the walking part. The top working platform needs 2-3 people to work together during construction. The walking process is bumpy, which is easy to cause safety accidents such as personnel falling and bent overturning and collapsing. 3. The detection bent occupies the road during operation, which poses a risk to road safety;

[0004] 2. Grouting bent: The tunnel construction site needs a third-party detection unit to conduct radar non-destructive testing on the quality of the initial support and lining. If the lining and waterproof board are found to be separated, or the initial support and surrounding rock are found to be separated, drilling and grouting filling are needed to fill them to the required standard. The grouting auxiliary bent is used for drilling and grouting operation. The process malady is: 1) The top platform of the grouting bent is 2-4 square meters, and the working height is 7-12 meters. The self-made detection bent is commonly used on site, and the processing and installation quality is uneven, which poses a risk to the safety of the bent structure quality; 2) In order to facilitate the movement of the bent, a universal wheel is commonly used as the walking part. The top working platform needs 2-3 people to work together during construction. The walking process is bumpy, which is easy to cause safety accidents such as personnel falling and bent overturning and collapsing; 3) The drilling and grouting bent occupies the road during operation, which poses a risk to road safety;

[0005] 3. Health maintenance shelf: In tunnel construction site, lining construction is generally carried out by pouring lining concrete 10-12 meters at a time, and the lining formwork trolley is moved forward after demolding to carry out the next group of lining construction. The newly poured and demolded lining needs to be cured, and the common practice on site is to cure it by spraying water at regular intervals. When curing the lining, a curing auxiliary shelf is needed. The process defects are: 1) The secondary lining curing shelf is parallel to the lining line at the outer edge to achieve the effect of water spraying and water mist. The lower wheel walking part is relatively safe for the operator to operate on the ground during the curing operation. There are two kinds of on-site processing and factory processing. The quality of the self-made curing shelf on site is uneven, and there is a risk of quality and safety of the shelf structure; 2) The curing shelf is a mechanical vehicle underpass type shelf, and the structure only meets the positioning needs of the water spraying and water mist curing pipeline and does not bear other external forces. Therefore, the structure of the curing shelf is relatively thin. Although warning lamps and other devices are used in the vehicle passage of the shelf, there are still safety accidents of the curing shelf being deformed, collapsed and overturned by passing vehicles.

[0006] 4. Decorative shelf: According to the design requirements, the lining surface needs to be decorated by pasting and installing ceramic tiles, spraying fireproof paint, installing insulation boards, and repairing the lining concrete surface, etc. These lining surface decoration constructions have the characteristics of large area, many workers, and heavy workload. When carrying out the decoration work such as lining concrete surface repair, a decorative auxiliary shelf is needed. The process defects are: 1) The secondary lining decoration shelf is parallel to the lining line at the outer edge to achieve the conditions of auxiliary construction, and is provided with multiple working platforms and a lower wheel walking part. During the decoration work, multiple workers and materials are working on the platforms on the left and right sides of the shelf, which has the risk of instability, overturning and falling; 2) The decorative shelf is generally a self-made curing shelf on site, and the quality of processing and installation is uneven, which has the risk of quality and safety of the shelf structure; 3) The decorative shelf is a mechanical vehicle underpass type shelf, and the structure only meets the needs of the decoration construction platform and does not bear other external forces. Therefore, the structure of the decorative shelf is relatively thin. Although warning lamps and other devices are used in the vehicle passage of the shelf, there are still safety accidents of the decorative shelf being deformed, collapsed and overturned by passing vehicles.

[0007] 5. Installation of the rack: tunnel construction site installation of operating ventilation jet fan, traffic identification signs, these installation operations have the characteristics of large single weight, many construction personnel, many and scattered installation points, and heavy workload. When installing, installation auxiliary racks are needed, and the process has the following disadvantages: 1) The installation construction rack is a temporary construction auxiliary rack, mostly temporary assembly support, the working platform is high, the weight is large, and many workers work on the rack. There is a risk of instability, collapse and falling; 2) The installation rack is a temporary structure, and the site management is loose. The installation quality is uneven, and there is a risk of installation quality and safety of the rack structure; 3) The installation rack structure is relatively thin, although warning lamps and other devices are used, there is still a risk of collision, deformation, collapse and overturning of passing mechanical vehicles on site.

[0008] 6. Construction rack: tunnel power lighting pipeline lamp installation construction, these power lighting installation operations have the characteristics of many lines and long, many construction personnel, and heavy workload. When installing power lighting, power construction auxiliary racks are needed, and the process has the following disadvantages: 1) The power lighting construction rack is a temporary construction auxiliary rack, mostly temporary assembly support, the working platform is high, the weight is not large, and many workers work on the rack. There is a risk of instability, collapse and falling; 2) The power lighting construction rack is a temporary structure, and the site management is loose. The installation quality is uneven, and there is a risk of installation quality and safety of the rack structure; 3) The installation rack structure is relatively thin, although warning lamps and other devices are used, there is still a risk of collision, deformation, collapse and overturning of passing mechanical vehicles on site.

[0009] 7. Dust reduction rack: a large amount of dust and toxic and harmful gases are generated during tunnel construction due to blasting, and mechanical construction and vehicle transportation cause dust. A water curtain dust reduction rack needs to be set up behind the formwork trolley to filter and reduce dust at the front end of the tunnel where dust is generated, so as to avoid dust pollution of the tunnel environment air along the way. When the water curtain dust reduction is carried out, dust reduction auxiliary racks are needed, and the process has the following disadvantages: 1) The water curtain dust reduction rack is a temporary construction auxiliary rack, mostly using self-designed and processed water curtain dust reduction racks by construction units, and the processing and installation quality is uneven, which has a risk of quality and safety of the rack structure; 2) For the convenience of moving the water curtain dust reduction rack, universal wheels are generally used as the walking part, and the rack structure is relatively thin, although warning lamps and other devices are used, there is still a risk of collision, deformation, collapse and overturning of passing mechanical vehicles on site.

[0010] 8. Flushing rack: in traditional tunnel construction, there is no precedent for setting up a mechanical vehicle flushing rack in the tunnel hole in the relevant literature and data; the flushing rack concept: in tunnel construction:

[0011] In-hole dust: mainly generated by blasting construction of the tunnel face, mainly concentrated between the face and the in-hole inverted arch end, and the in-hole construction machinery and vehicles are mainly in the dust pollution in this section;

[0012] Out-hole dust: mainly generated by the tunnel portal concrete site outside, the non-concrete covered road and the waste slag field, and the out-hole construction machinery and vehicles are mainly in the dust pollution in this area;

[0013] The in-hole inverted arch end to the tunnel portal concrete site is covered with concrete, and in the absence of external dust pollution, the self-generated dust pollution in this section is less and easy to clean, but currently, the tunnel construction site is generally polluted repeatedly by the mechanical vehicles from the face to the waste slag field, and the cleaning team is as few as five or six people or as many as dozens of people, which consumes a large amount of manpower and material resources and is unsatisfactory.

[0014] Further, the flushing rack concept: first, set up a mechanical vehicle flushing rack behind the tunnel lining formwork trolley, strictly manage the vehicle flushing, and cut off the in-hole dust pollution; second, set up a mechanical vehicle flushing rack at the tunnel portal concrete site, strictly manage the vehicle flushing, and cut off the out-hole dust pollution; supplemented by a water curtain dust fall and cleaning between the in-hole inverted arch end and the tunnel portal concrete site, which can effectively improve the road cleaning and environmental air quality along the way. The mechanical vehicle flushing inside and outside the hole needs to use a flushing auxiliary rack, and the existing process defects are: 1) the out-hole mechanical vehicle flushing rack operation generates a large amount of dust pollution and sewage, which needs to be introduced into the tunnel portal three-stage sedimentation tank for treatment; 2) the in-hole mechanical vehicle flushing rack operation generates a large amount of dust pollution and sewage, which needs to be treated by in-hole sewage treatment and recycling, or discharged to the tunnel portal three-stage sedimentation tank.

[0015] How to develop a tunnel construction multifunctional rack structure and construction method, which combines the traditional construction auxiliary rack and flushing rack into a multifunctional rack to complete the construction, detection, decoration, installation, grouting, curing, dust fall and flushing construction functions, has become a technical problem to be solved by the technical personnel in the field. SUMMARY

[0016] The purpose of the present application is to provide a tunnel construction multifunctional rack structure and construction method to solve the problems listed in the background art.

[0017] To solve the above technical problems, the present application adopts the following technical scheme:

[0018] The tunnel construction multifunctional bent structure, comprising a bent walking part, the bent walking part comprises a walking part main beam, one end of the walking part main beam is provided with a driven wheel, the other end of the walking part main beam is provided with a driving wheel, the upper end of the walking part main beam is provided with a bent framework part, the upper surface of the bent framework part is provided with a bent working platform part, the upper surface of the bent working platform part is provided with a bent water spraying and steam health care part;

[0019] The car washing platform car bottom flushing part is arranged on the ground between the opposite surfaces of the walking part main beam.

[0020] Preferably, the bent framework part comprises a portal upright beam, the lower end of the portal upright beam is fixedly connected with the upper end of the walking part main beam, the upper end of the portal upright beam is fixedly connected through a portal cross beam, and a portal diagonal beam is fixedly arranged between the portal upright beam and the portal cross beam.

[0021] The outer side wall of the portal upright beam is fixedly provided with an auxiliary cross beam, the upper surface of the portal cross beam is fixedly provided with an auxiliary upright beam, an air bag base frame is arranged on the end of the auxiliary cross beam and the auxiliary upright beam, and a longitudinal main beam is arranged between the opposite surfaces of the end of the auxiliary cross beam and the auxiliary upright beam.

[0022] Preferably, a car washing water-proof cover is arranged on the inner surface of the portal upright beam, the lower surface of the portal diagonal beam and the lower surface of the portal cross beam, and a car washing water spraying port is arranged on the lower surface of the car washing water-proof cover.

[0023] Preferably, the bent working platform part comprises a working platform panel, the working platform panel is arranged on the upper surface of the bent framework part, bent end head closing plates are arranged at the two ends of the working platform panel, and safety guardrails are arranged at the two ends of the upper surface of the bent framework part.

[0024] An air bag U-shaped groove is arranged on the air bag base frame, an annular air bag is arranged on the air bag U-shaped groove, and a longitudinal air bag is arranged between the bottoms of the two annular air bags.

[0025] A water curtain dust falling pipeline and a water mist spraying port are further arranged on the outer side of the air bag base frame.

[0026] A water collecting and guiding groove is arranged on the upper surface of the longitudinal air bag.

[0027] A health care closed space access door is arranged on the bent end head closing plate.

[0028] Preferably, the upper surface of the bent end head closing plate is arc-shaped, the lower surface of the bent end head closing plate is "convex" character-shaped, and the lower end of the bent end head closing plate comprises, from top to bottom, an air passing channel and a car passing channel.

[0029] Preferably, the overwind passage is provided with a fan.

[0030] Preferably, the pier water and steam health care part comprises a sedimentation and filtration water tank, which is fixedly installed on the upper surface of the walking part main beam, a water and steam spraying pipeline is communicated with the sedimentation and filtration water tank, and a water and steam spraying head is communicated with the water and steam spraying pipeline.

[0031] A health care water pump is installed on one side of the walking part main beam, and an electric steam generator is installed on the other side of the walking part main beam, and the health care water pump and the electric steam generator are both communicated with the sedimentation and filtration water tank.

[0032] A sedimentation and filtration water tank sewage valve is installed on the lower surface of the sedimentation and filtration water tank.

[0033] Preferably, the sedimentation and filtration water tank is communicated with the water collecting and guiding groove, and a water collecting and recycling water pump is installed in the water collecting and guiding groove.

[0034] Preferably, the car washing platform bottom flushing part comprises a car washing platform longitudinal beam, a car washing platform cross beam is fixedly installed between the opposite surfaces of adjacent car washing platform longitudinal beams, a car washing platform slope is fixedly installed at the two ends of the car washing platform longitudinal beam, and an open inclined upward spraying head is communicated with the car washing platform longitudinal beam.

[0035] A tunnel construction multifunctional pier construction method comprises the following steps:

[0036] S1, external power supply of the tunnel multifunctional pier is connected;

[0037] S2, the driving wheel works, moves to the working position behind the lining trolley, and the walking part is locked;

[0038] S3, the inverted chain is lowered to level the car washing platform;

[0039] S4, the tunnel high-pressure water supply pipeline hose is connected to the tunnel multifunctional pier;

[0040] S5, the end closure air bag of the pier is inflated by opening the air compressor to seal the end;

[0041] S6, the electric steam generator is started to generate steam;

[0042] S7, the health care water pump is started to switch the selection of the pier water spraying or steam health care;

[0043] S8, the high-pressure water supply pipeline hose is connected to the water curtain dust fall and car washing water supply pipeline;

[0044] S9, the water curtain dust fall is started to form a water mist curtain of the full section of the tunnel clearance;

[0045] S10, open the rack overpass washing platform and car side washing, form a rack channel vehicle washing;

[0046] S11, when the tunnel multifunctional rack moves, the chain is pulled to raise the washing platform;

[0047] S12, open the tunnel multifunctional walking part lock;

[0048] S13, the driving wheel is started, and the next working position is moved to the walking part lock.

[0049] Compared with the prior art, the beneficial technical effects of the present application are:

[0050] 1) Innovation: the structural design concept of the tunnel construction multifunctional rack abandons the traditional tunnel construction supporting work rack "one use" concept, and comprehensively designs and processes the supporting multifunctional rack. The multifunctional rack structure is electrically self-moving convenient, and the rack integrates construction, decoration, installation, detection, grouting, curing, dust reduction, washing and other tunnel construction supporting work functions. Compared with the traditional tunnel construction supporting work rack construction process, the tunnel construction multifunctional rack structure and function have obvious innovation.

[0051] 2) Advancement: the tunnel construction multifunctional rack is innovated and improved on the basis of traditional various tunnel construction supporting work rack structures, and overcomes the disadvantages and construction difficulties of traditional supporting work racks. The tunnel construction multifunctional rack electric vehicle structure is convenient to move, and has construction, decoration, installation, detection, grouting, curing, dust reduction, washing and other tunnel construction supporting work functions. Compared with the traditional tunnel construction supporting work rack construction process, the tunnel construction multifunctional rack structure and function have obvious advancement.

[0052] 3) Practicality: the tunnel construction multifunctional rack is designed and processed by a professional manufacturer according to the needs of on-site construction, and is convenient to move on site. It is followed by a tunnel lining formwork trolley, and is externally connected to a tunnel power supply and a high-pressure water supply pipe. It can be quickly installed and removed, and is simple, light, flexible and easy to operate. It can be recycled through daily maintenance and improvement, and compared with traditional work rack supporting construction, labor and material machine investment is greatly reduced, and has obvious practicality.

[0053] 4) Safety: the tunnel construction multifunctional rack provides a very safe and reliable guarantee for tunnel construction. It is designed and processed by a professional manufacturer, which effectively ensures the safety of the structure in on-site application.

[0054] 5) popularization: tunnel construction multifunctional bent, compared with the traditional working bent supporting construction technology, tunnel occupies small space, electric vehicle-mounted self-movable to the position, fusion construction, decoration, installation, detection, grouting, health, dust fall, flushing and other tunnel construction supporting work functions. Construction application is flexible and convenient, mechanical labor input is greatly reduced, effectively improves the maneuverability of multifunctional bent construction, and can be widely used in tunnel, pipe gallery, channel and other structure construction. BRIEF DESCRIPTION OF DRAWINGS

[0055] The application will be further described below in combination with the description of the drawings.

[0056] Figure 1 It is a three-dimensional schematic view of a tunnel construction multifunctional bent structure of the application;

[0057] Figure 2 It is a side view schematic diagram of the bent walking part of the application;

[0058] Figure 3 It is an assembly front view schematic diagram of the bent framework part and the bent walking part of the application;

[0059] Figure 4 It is an assembly three-dimensional schematic diagram of the bent framework part and the bent walking part of the application;

[0060] Figure 5 It is an assembly schematic diagram of the safety guardrail and the bent end closure plate of the application;

[0061] Figure 6 It is a three-dimensional schematic diagram of the working platform panel of the application;

[0062] Figure 7 It is an assembly schematic diagram of the bent working platform part of the application;

[0063] Figure 8 It is an installation schematic diagram of the fan of the application;

[0064] Figure 9 It is an assembly three-dimensional schematic diagram of the bent water spraying and steam health part of the application;

[0065] Figure 10 It is a three-dimensional schematic diagram of the car washing floor truck bottom flushing part of the application;

[0066] Figure 11 It is an installation schematic diagram of the car washing water-proof cover of the application;

[0067] Figure 12 It is an assembly schematic diagram of the car washing water spraying port and the car washing water-proof cover of the application;

[0068] Figure 13 It is a front view schematic diagram of a tunnel construction multifunctional bent structure of the application (tunnel half-section state);

[0069] Figure 14 Figure 1 is a side view of a tunnel construction multifunctional bent structure (tunnel half section state) according to the present application.

[0070] Reference signs: 1, bent walking part; 101, driven wheel; 102, walking part main beam; 103, driving wheel; 2, bent framework part; 201, portal upright beam; 202, portal inclined beam; 203, portal cross beam; 204, auxiliary cross beam; 205, auxiliary upright beam; 206, air bag base framework; 207, longitudinal main beam; 3, bent working platform part; 301, safety guardrail; 302, bent end closure plate; 303, working platform panel; 304, air bag U-shaped groove; 305, annular air bag; 306, water collecting and guiding groove; 307, longitudinal air bag; 308, maintenance closed space access door; 4, fan; 5, bent water spraying and steam maintenance part; 501, maintenance water pump; 502, electric steam generator; 503, water spraying and steam spraying head; 504, water spraying and steam pipeline; 505, sedimentation and filtration water tank; 506, sedimentation and filtration water tank sewage valve; 6, car washing ground platform bottom flushing part; 601, car washing ground platform longitudinal beam; 602, car washing ground platform cross beam; 603, car washing ground platform ramp; 7, car washing water spraying port; 8, car washing water-proof cover. DETAILED DESCRIPTION

[0071] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0072] As shown in Figures 1-14 Figure 1 is a side view of a tunnel construction multifunctional bent structure, which comprises a bent walking part 1, the bent walking part 1 comprising a walking part main beam 102, the walking part main beam 102 being arranged symmetrically left and right, the driving wheel and the driven wheel bearing the upper bent weight, the driving wheel being driven by an electric motor and a chain to realize forward and backward movement of the whole bent;

[0073] One end of the walking part main beam 102 is provided with a driven wheel 101, the other end of the walking part main beam 102 is provided with a driving wheel 103, the upper end of the walking part main beam 102 is provided with a bent framework part 2, the upper surface of the bent framework part 2 is provided with a bent working platform part 3, and the upper surface of the bent working platform part 3 is provided with a bent water spraying and steam maintenance part 5;

[0074] The car washing ground platform bottom flushing part 6 is located on the ground between the opposite faces of the walking part main beam 102.

[0075] Specifically, the row frame skeleton part 2 comprises a portal upright beam 201, the lower end of the portal upright beam 201 is fixedly connected with the upper end of the walking part main beam 102, the upper end of the portal upright beam 201 is fixedly connected through a portal cross beam 203, a portal inclined beam 202 is fixedly installed between the portal upright beam 201 and the portal cross beam 203;

[0076] An auxiliary cross beam 204 is fixedly installed on the outer side wall of the portal upright beam 201, an auxiliary upright beam 205 is fixedly installed on the upper surface of the portal cross beam 203, an air bag base skeleton 206 is installed on the end of the auxiliary cross beam 204 and the auxiliary upright beam 205, and a longitudinal main beam 207 is installed between the opposite faces of the end of the auxiliary cross beam 204 and the auxiliary upright beam 205.

[0077] Specifically, the inner surface of the portal upright beam 201, the lower surface of the portal inclined beam 202 and the lower surface of the portal cross beam 203 are installed with a car washing water isolation cover 8, and the lower surface of the car washing water isolation cover 8 is installed with a car washing water spraying opening 7.

[0078] Specifically, the row frame working platform part 3 comprises a working platform panel 303, the working platform panel 303 is installed on the upper surface of the row frame skeleton part 2, row frame end head closing plates 302 are installed at the two ends of the working platform panel 303, and safety guardrails 301 are installed at the two ends of the upper surface of the row frame skeleton part 2.

[0079] An air bag U-shaped groove 304 is installed on the air bag base skeleton 206, annular air bags 305 are installed on the air bag U-shaped groove 304, and a longitudinal air bag 307 is installed between the opposite faces of the bottom of the two annular air bags 305.

[0080] The dust in the tunnel mainly comes from the blasting of the working face, and the dust moves and pollutes in the tunnel in two ways, one is through the mechanical vehicles, when the mechanical vehicles are used between the working face and the end of the inverted arch, the dust is attached to the mechanical vehicles, especially to the tires or the caterpillar bands, and is scattered through the movement of the mechanical vehicles, the other is that the smaller dust moves to the outside of the hole through the ventilation in the tunnel, and the vehicle in and out of the tunnel causes the auxiliary dust raising, which causes the poor air quality in the tunnel, the water curtain dust falling pipeline and the water mist spraying opening are further installed on the outer side of the air bag base skeleton 206, the water mist water curtain of the full section of the tunnel clearance is formed, the dust moving through the ventilation is cut off, the washing and row frame function of the mechanical vehicles are combined, the two dust moving and spreading ways are blocked, and the air quality in the tunnel during construction is improved.

[0081] A water collecting and guiding groove 306 is installed on the upper surface of the longitudinal air bag 307.

[0082] A health preserving closed space access door 308 is arranged on the row frame end head closing plate 302.

[0083] Specifically, the upper surface of the rack end closure plate 302 is arc-shaped, the lower surface of the rack end closure plate 302 is "convex" shaped, and the lower end of the rack end closure plate 302 sequentially includes a wind passage and a vehicle passage from top to bottom.

[0084] Specifically, the wind passage is provided with a fan 4.

[0085] Specifically, the rack water spraying and steam health care part 5 includes a sedimentation and filtration water tank 505, which is fixedly installed on the upper surface of the walking part main beam 102, and a water collecting and guiding groove is located on both sides of the rack, the lower end of the air bag base skeleton, the outer side is attached to the longitudinal air bag, and the inner side is attached to the closure plate to form a closure. During water spraying and steam health care operation, water or steam (cooled into water droplets) sprayed on the lining falls or flows along the surface of the lining into the water collecting groove, and under the action of the slope of the groove bottom guide plate, the water flows to the rear end of the water collecting and guiding groove. Further, the sedimentation and filtration water tank 505 is in communication with the water collecting and guiding groove 306, a water collecting and recycling water pump 507 is installed in the water collecting and guiding groove 306, and seven sedimentation and filtration compartments are arranged in the sedimentation and filtration water tank 505. The water collected by the water collecting and guiding groove is sedimentation and filtration recycled to reduce sewage caused by health care. One side is used as a water source water tank of an electric steam generator, and the other side is used as a water source water tank of a water spraying and health care water pump.

[0086] The sedimentation and filtration water tank 505 is in communication with a water spraying and steam pipe 504, the water spraying and steam pipe 504 is in communication with a water spraying and steam nozzle 503, a health care water pump 501 is installed on one side of the walking part main beam 102 to provide water source and water pressure for the water spraying and steam pipe network, and an electric steam generator 502 is installed on the other side of the walking part main beam 102 to provide steam and air pressure for the water spraying and steam pipe network. The health care water pump 501 and the electric steam generator 502 are both in communication with the sedimentation and filtration water tank 505. The rear ends of the water spraying and steam pipes are respectively connected with the sedimentation and filtration water tank pipes, the front ends of the water spraying and steam pipes are respectively in communication with the health care water pump and the electric steam generator. During water spraying and health care operation, the valve is closed, the water spraying and steam pipes are pressurized to spray and maintain health, after the water spraying and health care operation is completed, the valve is opened, the residual water in the water spraying and steam pipes flows back to the sedimentation and filtration water tank, and the water in the water spraying and steam pipes is emptied. During steam health care operation, the valve is opened, the electric steam generator generates steam to pressurize the water spraying and steam pipes, the steam is injected into the closed health care space through the water spraying and steam nozzle, after the steam health care is completed, the electric steam generator and the control valve are closed, and the steam in the water spraying and steam pipes is emptied.

[0087] A sedimentation and filtration water tank pollution valve 506 is installed on the lower surface of the sedimentation and filtration water tank 505, and a slope plate is further arranged in the sedimentation and filtration water tank. The sedimentation and filtration water tank pollution valve is arranged at the bottom end of the slope to facilitate regular cleaning of the impurities deposited at the bottom of the water tank.

[0088] In operation, according to the construction area and seasonal environmental temperature, in the environment with high temperature in plain low-latitude area, water spraying and water spraying mist are used for curing the lining concrete, in the environment with cold temperature in high-altitude high-latitude area, steam curing is used for curing the lining concrete, considering the large seasonal temperature difference in some areas, in order to improve the popularity of the multi-functional bent curing function, water spraying mist and steam are used for curing the lining concrete, a water tank and a finished product steam generator are matched on the bent, a set of pipeline and nozzle structure are shared, and the water spraying mist or steam curing mode is selected through a valve conversion; the water spraying curing and steam curing mainly function through the space closed structure matched by the bent, the water circulation structure for water spraying or steam curing, the lining concrete curing of the whole section of the tunnel area, and the improvement of the concrete quality.

[0089] Specifically, the car washing platform bottom flushing part 6 comprises car washing platform longitudinal beams 601, car washing platform cross beams 602 fixedly installed between opposite surfaces of adjacent car washing platform longitudinal beams 601, and car washing platform ramps 603 fixedly installed at two ends of the car washing platform longitudinal beams 601, and the car washing platform longitudinal beams 601 are provided with open upwardly inclined nozzles in communication, so as to complete the cleaning of the vehicle out of the tunnel.

[0090] A construction method of a multi-functional bent structure for tunnel construction comprises the following steps:

[0091] S1, external power supply of the tunnel multi-functional bent is connected;

[0092] S2, the driving wheel is operated to move to a working position behind the lining trolley, and the walking part is locked;

[0093] S3, the inverted chain is lowered to arrange the car washing platform;

[0094] S4, the tunnel high-pressure water supply pipeline hose is connected to the tunnel multi-functional bent;

[0095] S5, the bent end closing air bag is inflated by opening the air compressor to seal the end;

[0096] S6, the electric steam generator is opened to generate steam;

[0097] S7, the curing water pump is opened to select the water spraying or steam curing of the bent;

[0098] S8, the high-pressure water supply pipeline hose is connected to the water curtain dust fall and car washing water supply pipeline;

[0099] S9, the water curtain dust fall is opened to form a water mist curtain of the whole section of the tunnel clearance;

[0100] S10, the car washing platform and the car side flushing of the bent vehicle passage are opened to form the bent vehicle flushing;

[0101] S11, when the tunnel multifunctional frame moves, the chain is pulled to lift the car washing platform;

[0102] S12, open the tunnel multifunctional walking part lock;

[0103] S13, the driving wheel starts to move to the next working position, and the walking part is locked.

[0104] During the tunnel excavation lining construction: 1. The on-site multifunctional frame is installed behind the secondary lining formwork trolley, and after the secondary lining formwork trolley pours concrete, the multifunctional frame moves to the lining curing section, inflates the air bag to close, forms a relatively closed curing space with the frame panel, and sprays water and steam to the just demoulded lining concrete through the water spraying and steam curing devices arranged on the frame; through the water spraying and water mist devices arranged on both sides and the upper part of the frame channel, the passing machinery and vehicles are sprayed and washed, and the dust after blasting and vehicle dust is sprayed and misted to reduce dust; through the frame panel and walking function, a safe and stable walking working platform is provided for tunnel lining nondestructive testing and lining void grouting.

[0105] During the supporting construction after the tunnel is penetrated: through the frame panel and walking function, a safe and stable walking working platform is provided for tunnel lining surface lighting power line and lamp construction, operation ventilation jet fan and sign installation, lining surface (ceramic tile, fireproof coating, insulation board) decoration.

[0106] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0107] The above-described embodiments are only to describe the preferred modes of the present application, and are not intended to limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A multifunctional bent frame structure for tunnel construction, comprising a bent frame walking portion (1), wherein the bent frame walking portion (1) comprises a walking portion main beam (102), one end of the walking portion main beam (102) is mounted with a driven wheel (101), and the other end of the walking portion main beam (102) is mounted with a driving wheel (103), characterized in that: A bent frame portion (2) is installed at the upper end of the walking portion main beam (102), a bent frame portion (3) is installed on the upper surface of the bent frame portion (2), and a bent water spray and steam curing portion (5) is installed on the upper surface of the bent frame portion (2); It also includes a car washing platform undercarriage flushing portion (6), and the car washing platform undercarriage flushing portion (6) is located on the ground between opposite surfaces of the walking part main beam (102).

2. The multifunctional bent structure for tunnel construction according to claim 1, characterized in that: The bent frame portion (2) includes a portal frame beam (201), the lower end of the portal frame beam (201) is fixedly connected to the upper end of the walking portion main beam (102), the upper end of the portal frame beam (201) is fixedly connected via a portal frame cross beam (203), and a portal frame oblique beam (202) is fixedly installed between the portal frame beam (201) and the portal frame cross beam (203); An auxiliary crossbeam (204) is fixedly mounted on the outer side wall of the portal frame beam (201), an auxiliary vertical beam (205) is fixedly mounted on the upper surface of the portal frame beam (203), an airbag base frame (206) is mounted on the ends of the auxiliary crossbeam (204) and the auxiliary vertical beam (205), and a longitudinal main beam (207) is mounted between the opposite surfaces of the ends of the auxiliary crossbeam (204) and the auxiliary vertical beam (205).

3. The multifunctional bent structure for tunnel construction according to claim 2, characterized in that: The inner surface of the portal frame vertical beam (201), the lower surface of the portal frame oblique beam (202) and the lower surface of the portal frame cross beam (203) are installed with a car washing water shield (8), and the lower surface of the car washing water shield (8) is installed with a car washing water spray port (7).

4. The multifunctional bent structure for tunnel construction according to claim 3, characterized in that: The bent frame working platform part (3) includes a working platform panel (303), the working platform panel (303) is installed on the upper surface of the bent frame part (2), the two ends of the working platform panel (303) are installed with bent frame end closing plates (302), and the two ends of the upper surface of the bent frame part (2) are installed with safety guardrails (301); An airbag U-bottom groove (304) is installed on the airbag base frame (206), an annular airbag (305) is installed on the airbag U-bottom groove (304), and a longitudinal airbag (307) is installed between the opposite surfaces of the bottoms of the two annular airbags (305); A water curtain dust suppression pipe and a water mist nozzle are also installed on the outer side of the airbag base frame (206); A water collecting and diversion groove (306) is installed on the upper surface of the longitudinal air bag (307); The shelf end closing plate (302) is provided with an entrance door (308) for the health-preserving closed space.

5. The multifunctional bent structure for tunnel construction according to claim 4, characterized in that: The upper surface of the rack end closing plate (302) is arc-shaped, the lower surface of the rack end closing plate (302) is convex-shaped, and the lower end of the rack end closing plate (302) is an air passage and a vehicle passage from top to bottom.

6. The multifunctional bent structure for tunnel construction according to claim 5, characterized in that: The air passage is equipped with a fan (4).

7. The multifunctional bent structure for tunnel construction according to claim 1, characterized in that: The bent frame water spraying and steam curing part (5) includes a sedimentation and filtering water tank (505), the sedimentation and filtering water tank (505) is fixedly mounted on the upper surface of the walking part main beam (102), the sedimentation and filtering water tank (505) is connected to a water spraying steam pipe (504), and the water spraying steam pipe (504) is connected to a water spraying steam nozzle (503); A health water pump (501) is installed on the walking portion main beam (102) on one side, and an electric steam generator (502) is installed on the walking portion main beam (102) on the other side. The health water pump (501) and the electric steam generator (502) are both connected to the sedimentation and filtration water tank (505); A sedimentation and filtration water tank cleaning valve (506) is installed on the lower surface of the sedimentation and filtration water tank (505).

8. The multifunctional bent structure for tunnel construction according to claim 7, characterized in that: The sedimentation and filtration water tank (505) is in communication with the water collecting and diversion trough (306), and a water collecting and recovery pump (507) is installed in the water collecting and diversion trough (306).

9. The multifunctional bent structure for tunnel construction according to claim 1, characterized in that: The car wash platform undercarriage flushing part (6) comprises a car wash platform longitudinal beam (601), a car wash platform cross beam (602) is fixedly installed between the opposite surfaces of adjacent car wash platform longitudinal beams (601), a car wash platform ramp (603) is fixedly installed at both ends of the car wash platform longitudinal beams (601), and a nozzle with an opening inclined upward is connected to the car wash platform longitudinal beams (601).

10. A method for constructing a multifunctional bent structure for tunnel construction, comprising: The steps include: S1, external power supply access for tunnel multifunctional rack; S2, the driving wheel works and moves to the working position behind the lining trolley, and the traveling part is locked; S3. Lower the chain and level the car wash platform; S4, the tunnel high-pressure water supply pipe hose is connected to the tunnel multi-functional rack; S5. The air compressor for filling and deflation of the airbag at the end of the rack is turned on to fill and seal the end; S6. The electric steam generator is turned on to produce steam; S7, the curing water pump is turned on, and the rack water spray or steam curing is switched; S8. Connect the high-pressure water supply hose to the water curtain dust suppression and car wash water supply pipeline; S9. Turn on the water curtain to reduce dust, forming a water mist curtain covering the entire tunnel section; S10, open the car wash platform and vehicle side wash in the rack passage to form a rack passage vehicle wash; S11. When the multifunctional rack in the tunnel is moved, the fall chain is pulled up to move the car wash platform; S12. Unlock the multifunctional tunnel walking unit; S13: The driving wheel starts and moves to the next working position, and the traveling part is locked.

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