CN110529146B - Equipment for single-track tunnel inverted arch construction and construction method thereof - Google Patents
Equipment for single-track tunnel inverted arch construction and construction method thereof Download PDFInfo
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- CN110529146B CN110529146B CN201810560813.4A CN201810560813A CN110529146B CN 110529146 B CN110529146 B CN 110529146B CN 201810560813 A CN201810560813 A CN 201810560813A CN 110529146 B CN110529146 B CN 110529146B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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Abstract
The invention discloses equipment for single-line tunnel inverted arch construction and a construction method thereof. The invention solves the problem that the self-propelled inverted arch trestle and inverted arch form are limited in use in a single-track railway tunnel, is simple and convenient to install and dismantle, simplifies the workload and improves the working efficiency.
Description
Technical Field
The invention relates to the technical field of tunnel engineering construction, in particular to equipment for single-line tunnel inverted arch construction and a construction method thereof.
Background
The inverted arch is one of main components of a tunnel structure and is the foundation of the tunnel structure, and is used for effectively transmitting stratum pressure at the upper part of the tunnel to the underground through a tunnel side wall structure or load on a road surface on one hand, and resisting counter force transmitted by stratum at the lower part of the tunnel on the other hand. When tunnel engineering is constructed, the inverted arch operation generally comprises construction procedures such as excavation, foundation clearing, steel bar installation, concrete pouring and the like, the inverted arch groove excavation and the subsequent procedures are long in operation time, and normal passing of vehicles in the front-back direction is influenced, so that after the inverted arch is excavated, trestle bridges are needed to span an excavation area, and the vehicles can pass smoothly. The tunnel inverted arch trestle is a common machine for tunnel inverted arch construction, and is mainly used for vehicle passing in the tunnel inverted arch construction process and ensuring the safety construction operation of bottom workers. In a single-track railway tunnel, because the space of the tunnel is narrow, the inverted arch trestle and the inverted arch template of the traditional double-track tunnel cannot be used, so that a special inverted arch trestle for the single-track tunnel and a matched template thereof are needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides equipment for single-track tunnel inverted arch construction and a construction method thereof, and can solve the problem that the use of the existing self-propelled inverted arch trestle and inverted arch template in a single-track railway tunnel is limited.
The invention is realized by the following technical scheme:
the device for constructing the single-line tunnel inverted arch comprises a self-propelled inverted arch trestle and a self-propelled inverted arch template, wherein the front end of the self-propelled inverted arch template is connected with the self-propelled inverted arch trestle through a linking mechanism;
The self-propelled inverted arch trestle comprises a rear bridge deck, a rear bridge deck jacking cylinder, a rear travelling wheel, a rear travelling guide mechanism, a rear travelling jacking cylinder, a rear sliding support, a sliding cylinder, a main bridge structure, a front support, a front end crawler, a crawler telescopic mechanism, a front bridge deck cylinder and a front bridge deck; the front end and the rear end of the main bridge structure are respectively connected with the rear bridge deck and the front bridge deck, the bottom surface of the rear bridge deck is provided with a rear bridge deck jacking cylinder, and the overturning action of the rear bridge deck is realized through the expansion and the contraction of the rear bridge deck jacking cylinder; the rear end of the main bridge structure is provided with a rear walking jacking cylinder which is sequentially connected with a rear walking guide mechanism and a rear walking wheel; the bottom surface of the rear end of the main bridge structure is in sliding connection with a rear sliding support, and the rear sliding support is connected with the rear sliding oil cylinder; the front bridge deck lifting oil cylinder is arranged on the bottom surface of the front bridge deck, and the overturning action of the front bridge deck is realized through the expansion and the contraction of the front bridge deck lifting oil cylinder; the front end bottom of the main bridge structure is provided with a front support, the crawler telescopic mechanism is arranged on the front support, and the crawler telescopic mechanism is connected with the front crawler;
The self-propelled inverted arch template comprises a rear travelling wheel, a jacking jack, a guide rod, a guide seat, an inverted arch template, a filling plug template and a template support, wherein the inverted arch plug template and a template end beam; the rear travelling wheel is arranged at the rear end of the inverted arch template, the guide seat is arranged at the top end of the rear travelling wheel, the guide rod is arranged in the guide seat, the top end of the guide rod is connected with the lifting jack, and the guide rod slides along the guide seat through the lifting action of the lifting jack to prop the inverted arch template off the ground; the template end beam is connected with the left side and the right side of the inverted arch template, the filling plug template is installed at the template end Liang Zhongbu, the template supports are symmetrically arranged at the two ends of the template end beam and used for adjusting the horizontal position of the inverted arch template in place, and the inverted arch plug template is detachably installed on the filling plug template.
In the above technical scheme, the rear end bottom surface of main bridge structure is provided with back draw-in groove that slides, forms the chamber of sliding between this back draw-in groove and the main bridge structure, back slide support be used for supporting the main bridge structure, set up in above-mentioned chamber of sliding and with its sliding connection.
In the above technical scheme, the front end crawler belt is connected with the crawler belt telescopic mechanism through the crawler belt pin shaft, and the front end crawler belt rotates in the forward and backward direction (the span direction of the self-propelled inverted arch trestle 1).
In the above technical scheme, the top surface left and right sides of main bridge structure is vertical to be provided with the guardrail.
In the technical scheme, the bridge deck center and the bridge deck of the main bridge structure are provided with the wheel limiting beams which prevent wheels from falling in the same direction.
In the above technical scheme, the section of the rear sliding support (the direction perpendicular to the span direction of the self-propelled inverted arch trestle) is a special-shaped structure with a wide upper part and a narrow lower part.
In the above technical scheme, the left side and the right side of the bottom surface of the main bridge structure are provided with the upward arch form sliding rails for lifting and sliding the front end of the self-propelled upward arch form.
In the technical scheme, the rear bridge deck and the front bridge deck are connected with the front end and the rear end of the main bridge structure through pin shafts.
In the above technical scheme, the linking mechanism is a chain block.
In the technical scheme, the main bridge structure adopts a truss girder structure welded by the work steel.
On the other hand, the construction method of the equipment for constructing the inverted arch of the single-track tunnel comprises the following steps:
1) The removal of self-propelled invert landing stage includes:
1.1 Marking a midline on the inverted arch base surface;
1.2 Taking the central line marked on the inverted arch basal plane as a reference to move the self-propelled inverted arch trestle forward, and if the self-propelled inverted arch trestle deviates from the central line in the moving process, correcting by adopting a rear sliding oil cylinder;
1.3 The bottom substrate of the trestle is cleaned after the self-propelled inverted arch trestle moves to a specified position;
2) Binding inverted arch steel bar
3) The self-propelled invert form moves and positions, including:
3.1 Lifting the rear travelling wheel, supporting the rear end of the inverted arch template from the ground, lifting the template end Liang Laqi by using a chain block at the front end of the inverted arch template, and pushing the inverted arch template to move forward to a specified position along the sliding track of the inverted arch template by the rear travelling wheel;
3.2 Inverted arch form rear end positioning: the rear end of the inverted arch template is clamped in the groove by taking a group of lined grooves as a benchmark;
3.2 Inverted arch form front end positioning: according to the measurement control points, lifting a template end beam by using a chain block to adjust the height position of the inverted arch template, supporting and adjusting the horizontal position of the inverted arch template by using a template, when the inverted arch template is adjusted, taking the top of the outer side of the inverted arch template as a measurement positioning point, performing rough adjustment, performing precise adjustment, and then installing an inverted arch plug template;
3.3 After the positioning is finished, supporting the template to the ground, supporting the side walls at the same time, punching fixed rivets on the side walls at two sides, loosening the chain block, and separating the self-propelled inverted arch template from the self-propelled inverted arch trestle;
4) Casting concrete, comprising:
4.1 Pouring concrete to the inverted arch according to the sequence of the middle part and the two sides;
4.2 After the pouring operation is finished and the inverted arch concrete reaches the design strength, pouring inverted arch filling concrete to the design elevation;
5) And (3) demolding the self-propelled inverted arch template: and 4.2) after the operation is finished, demolding after the inverted arch filled concrete reaches the design strength, wherein the demolding comprises the following steps of:
5.1 Removing the fixing rivet;
5.2 Removing the inverted arch plug template;
5.3 The rear end of the inverted arch template is lifted and demoulded by a lifting jack;
5.4 The formwork support at the front end of the inverted arch formwork is separated from the ground and the side walls, and the demolding is completed through the lifting and demolding of the chain block.
The invention has the advantages and beneficial effects that:
(1) The rear sliding support adopts a special-shaped structure with wide upper part and narrow lower part, and sufficient inverted arch template working space is reserved on two sides of the bottom.
(2) The girder structure of the main bridge structure adopts the girder structure welded by the steel, has good bearing capacity, reduces the weight of the structure and reduces the occupied space of the self-propelled inverted arch trestle.
(3) The front-end crawler belt can rotate in the forward and backward directions, and the capability of adapting to the ground of the front-end crawler belt is improved.
(4) The wheel limiting beams are arranged in the same direction with the bridge floor in the center of the bridge floor of the main bridge structure and are used for limiting the inner sides of wheels and preventing the wheels from deviating from a lower trestle.
(5) The device for constructing the inverted arch of the single-track tunnel and the construction method thereof solve the problem that the self-propelled inverted arch trestle and the inverted arch template are limited in use in the single-track railway tunnel, are simple and convenient to install and dismantle, simplify the workload and improve the working efficiency.
Drawings
Fig. 1 is a schematic structural view of an apparatus for single-line tunnel inverted arch construction according to the present invention.
Fig. 2 is a schematic structural view of the self-propelled inverted arch trestle (1) shown in fig. 1.
Fig. 3 is a top view of the self-propelled inverted arch trestle (1) shown in fig. 2.
Fig. 4 is a side view of the self-propelled inverted arch trestle (1) of fig. 2.
Fig. 5 is a schematic view of the structure of the rear slide support (106) shown in fig. 1.
Fig. 6 is a schematic view of the construction of the self-propelled inverted arch form (2) shown in fig. 1.
Fig. 7 is a side view of the self-propelled inverted arch form (2) of fig. 6.
Wherein:
1: self-propelled invert trestle, 2: self-propelled inverted arch form, 3: a link mechanism, 101: rear deck, 102: rear deck jack cylinder, 103: rear road wheels, 104: rear walk guide mechanism, 105: rear walk jacking cylinder, 106: rear slide support, 107: rear slide card slot, 108: slip cylinder, 109: inverted arch form slip track, 110: guardrail, 111: host bridge structure, 112: front support, 113: front end tracks, 114: track telescoping mechanism, 115: track pin, 116: front deck ram, 117: front deck, 118: wheel restraining beam, 201: rear road wheels, 202: jack-up jack, 203: guide bar, 204: guide holder, 205: inverted arch form, 206: filling a plug template, 207: template support, 208: inverted arch plug template.
Other relevant drawings may be made by those of ordinary skill in the art from the above figures without undue burden.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples. It should be noted that: the following examples are illustrative, not limiting, and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-7, an apparatus for single-line tunnel inverted arch construction according to an embodiment of the present invention includes a self-propelled inverted arch trestle 1 composed of a rear deck 101, a rear deck jack 102, a rear traveling wheel 103, a rear traveling guide mechanism 104, a rear traveling jack 105, a rear sliding support 106, a sliding cylinder 108, a main bridge structure 111, a front support 112, a front crawler 113, a crawler telescoping mechanism 114, a front deck cylinder 116, a front deck 117, and a self-propelled arch trestle 2 composed of a rear traveling wheel 201, a jack-up jack 202, a guide rod 203, a guide seat 204, an inverted arch template 205, a filling plug template 206, a template support 207, an inverted arch plug template 208, and a template end beam 209, wherein the front end of the self-propelled inverted arch template 2 is connected with the self-propelled inverted arch trestle 1 through a link mechanism 3.
The front and rear ends of the main bridge structure 111 are respectively connected with the rear bridge deck 101 and the front bridge deck 117, a rear bridge deck jacking cylinder 102 is arranged on the bottom surface of the rear bridge deck 101, the other end of the rear bridge deck jacking cylinder 102 is connected with the bottom surface of the main bridge structure 111, and the overturning action of the rear bridge deck 101 is realized through the expansion and contraction of the rear bridge deck jacking cylinder 102; the rear end of the main bridge structure 111 is vertically provided with a rear walking jacking cylinder 105, the bottom of the rear walking jacking cylinder 105 is connected with a rear walking guide mechanism 104, and the bottom of the rear walking guide mechanism 104 is connected with a rear walking wheel 103; the bottom surface of the rear end of the main bridge structure 111 is in sliding connection with the rear sliding support 106, the rear sliding support 106 is connected with the rear sliding oil cylinder 108, and the rear sliding support 106 is driven by the rear sliding oil cylinder 108 to transversely move along the bridge deck of the main bridge structure 111 so as to realize deviation correction of the self-propelled inverted arch trestle 1 in the travelling process;
the front deck 117 bottom surface is provided with front deck jack-up cylinder 116, realizes the upset action of front deck 117 through the flexible of front deck jack-up cylinder 116, installs vertical front portion support 112 in the front end bottom of main bridge structure 111, installs track telescopic machanism 114 on it, and this track telescopic machanism 114 is connected with front end track 113, and front end track 113 can prolong the rotation of fore-and-aft direction (the span direction of self-propelled invert trestle 1), has improved the ability that front end track adaptation ground.
The rear travelling wheel 201 is arranged at the rear end of the inverted arch template 205, the top end of the rear travelling wheel 201 is vertically provided with a guide seat 204, a guide rod 203 is coaxially arranged in the guide seat 204, the top end of the guide rod 203 is connected with the jacking jack 202, and the guide rod 203 slides in the guide seat 204 along the vertical direction through the jacking action of the jacking jack 202 so as to prop the inverted arch template 205 off the ground; the template end beam 209 is connected with the left side and the right side of the inverted arch template 205 and is connected into a whole, the filling plug template 206 is installed in the middle of the template end beam 209, the template supports 207 are symmetrically arranged at the two ends of the template end beam 209 and are used for adjusting the horizontal position of the inverted arch template 205 in place, and the inverted arch plug template 208 is detachably connected to the filling plug template 206.
Example two
On the basis of the first embodiment, as shown in fig. 1-7, the apparatus for single-track tunnel inverted arch construction according to the first embodiment of the present invention includes a self-propelled inverted arch bridge 1 composed of a rear deck 101, a rear deck jack 102, a rear traveling wheel 103, a rear traveling guide mechanism 104, a rear traveling jack 105, a rear sliding support 106, a rear sliding clamping groove 107, a sliding cylinder 108, an inverted arch form sliding rail 109, a guardrail 110, a main bridge structure 111, a front support 112, a front end crawler 113, a crawler telescoping mechanism 114, a crawler pin 115, a front deck cylinder 116, a front deck 117, and a wheel limiting beam 118, and a self-propelled inverted arch bridge 2 composed of a rear traveling wheel 201, a jack 202, a guide rod 203, a guide holder 204, an inverted arch form 205, a filling plug form 206, a form support 207, an inverted arch plug form 208, and a form end beam 209, wherein the front end of the self-propelled inverted arch bridge 2 is connected to the self-propelled inverted arch bridge 1 through a chain hoist.
The main bridge structure 111 adopts a truss girder structure welded by the industrial steel, has good bearing capacity, reduces the weight of the structure and reduces the occupied space of the self-propelled inverted arch trestle; the front end and the rear end of the main bridge structure 111 are respectively connected with the rear bridge deck 101 and the front bridge deck 117 through pin shafts, a rear bridge deck jacking cylinder 102 is arranged on the bottom surface of the rear bridge deck 101, the other end of the rear bridge deck jacking cylinder 102 is connected with the bottom surface of the main bridge structure 111, and the overturning action of the rear bridge deck 101 is realized through the expansion and contraction of the rear bridge deck jacking cylinder 102; the rear end of the main bridge structure 111 is vertically provided with a rear walking jacking cylinder 105, the bottom of the rear walking jacking cylinder 105 is connected with a rear walking guide mechanism 104, and the bottom of the rear walking guide mechanism 104 is connected with a rear walking wheel 103; the rear end bottom surface of the main bridge structure 111 is provided with a rear sliding clamping groove 107, a sliding cavity is formed between the rear sliding clamping groove 107 and the main bridge structure 111, a rear sliding support 106 is used for supporting the main bridge structure 111, is arranged in the sliding cavity and is in sliding connection with the main bridge structure 111, and the rear sliding support 106 is driven by a rear sliding oil cylinder 108 to transversely move along the bridge deck of the main bridge structure 111 so as to realize deviation correction of the self-propelled inverted arch trestle 1 in the running process; the section of the rear sliding support 106 is of a special-shaped structure with a wide upper part and a narrow lower part, and enough working space of the inverted arch template 205 is reserved on two sides of the bottom; inverted arch form sliding rails 109 are arranged on the left side and the right side of the bottom surface of the main bridge structure 111 and used for lifting and sliding the front end of the self-propelled inverted arch form 2, guardrails 110 are vertically arranged on the left side and the right side of the top surface, and wheel limiting beams 118 for preventing wheels from falling are arranged in the same direction as the bridge floor in the center of the bridge floor;
The front bridge deck 117 bottom surface is provided with front bridge deck jack-up cylinder 116, realizes the upset action of front bridge deck 117 through the flexible of front bridge deck jack-up cylinder 116, installs vertical front portion support 112 in the front end bottom of main bridge structure 111, installs track telescopic machanism 114 on it, and this track telescopic machanism 114 is connected with front end track 113, is connected through track round pin axle 115 between front end track 113 and the track telescopic machanism 114, and front end track 113 can be extended forward and backward direction (the span direction of self-propelled invert trestle 1) rotatory, has improved the ability that front end track adapted ground.
The rear travelling wheel 201 is arranged at the rear end of the inverted arch template 205, the top end of the rear travelling wheel 201 is vertically provided with a guide seat 204, a guide rod 203 is coaxially arranged in the guide seat 204, the top end of the guide rod 203 is connected with the jacking jack 202, and the guide rod 203 slides in the guide seat 204 along the vertical direction through the jacking action of the jacking jack 202 so as to prop the inverted arch template 205 off the ground; the template end beam 209 is connected with the left side and the right side of the inverted arch template 205 and is connected into a whole, the filling plug template 206 is installed in the middle of the template end beam 209, the template supports 207 are symmetrically arranged at the two ends of the template end beam 209 and are used for adjusting the horizontal position of the inverted arch template 205 in place, and the inverted arch plug template 208 is detachably connected to the filling plug template 206.
Example III
On the basis of the second embodiment, as shown in fig. 1 to 7, an apparatus for single-track tunnel inverted arch construction according to the second embodiment of the present invention comprises the following steps:
1) The removal of self-propelled invert landing stage includes:
1.1 Marking a midline on the inverted arch base surface;
1.2 Taking the central line marked on the inverted arch basal plane as a reference to move the self-propelled inverted arch trestle forward, and if the self-propelled inverted arch trestle deviates from the central line in the moving process, correcting by adopting a rear sliding oil cylinder 108;
1.3 The bottom substrate of the trestle is cleaned after the self-propelled inverted arch trestle moves to a specified position;
2) Binding inverted arch steel bar
3) The self-propelled invert form moves and positions, including:
3.1 A rear travelling wheel 201 is lifted to prop the rear end of the inverted arch template 205 off the ground, the front end of the inverted arch template 205 uses a chain block to pull and lift the template end beam 209, and the rear travelling wheel 201 pushes the inverted arch template 205 to move forwards to a specified position along the inverted arch template sliding rail 109;
3.2 Inverted arch form 205 rear end positioning: the rear end of the inverted arch template 205 is clamped in the groove by means of a group of lined grooves serving as references;
3.2 Inverted arch form 205 front end positioning: according to the measurement control point, lifting a template end beam 209 by using a chain block to adjust the height position of the inverted arch template 205, adjusting the horizontal position of the inverted arch template 205 by using a template support 207, and when the inverted arch template 205 is adjusted, taking the top of the outer side of the inverted arch template 205 as a measurement positioning point, performing rough adjustment, performing precise adjustment, and then installing an inverted arch plug template 208;
3.3 After the positioning is completed, supporting the template support 207 to the ground and supporting the side walls at the same time, punching fixed rivets on the side walls at two sides, loosening the chain block, and separating the self-propelled inverted arch template from the self-propelled inverted arch trestle;
4) Casting concrete, comprising:
4.1 Pouring concrete to the inverted arch according to the sequence of the middle part and the two sides;
4.2 After the pouring operation is finished and the inverted arch concrete reaches the design strength, pouring inverted arch filling concrete to the design elevation;
5) And (3) demolding the self-propelled inverted arch template: and 4.2) after the operation is finished, demolding after the inverted arch filled concrete reaches the design strength, wherein the demolding comprises the following steps of:
5.1 Removing the fixing rivet;
5.2 Removing the inverted arch plug template;
5.3 The rear end of the inverted arch template is lifted and demoulded by a lifting jack;
5.4 The formwork support at the front end of the inverted arch formwork is separated from the ground and the side walls, and the demolding is completed through the lifting and demolding of the chain block.
The device for constructing the inverted arch of the single-track tunnel and the construction method thereof solve the problem that the self-propelled inverted arch trestle and the inverted arch template are limited in use in the single-track railway tunnel, are simple and convenient to install and dismantle, simplify the workload and improve the working efficiency.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature's illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "under" other elements or features would then be oriented "over" the other elements or features. Thus, the exemplary term "lower" may encompass both an upper and lower orientation. The device may be otherwise positioned (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The invention has been described above by way of example, it being understood that any simple variant, without departing from the core of the invention: modifications and other equivalents will occur to those skilled in the art and are intended to fall within the scope of the present invention.
Claims (7)
1. An apparatus for single-track tunnel inverted arch construction, characterized in that: the self-propelled inverted arch trestle comprises a self-propelled inverted arch trestle and a self-propelled inverted arch template, wherein the front end of the self-propelled inverted arch template is connected with the self-propelled inverted arch trestle through a link mechanism;
the self-propelled inverted arch trestle comprises a rear bridge deck, a rear bridge deck jacking cylinder, a rear travelling wheel, a rear travelling guide mechanism, a rear travelling jacking cylinder, a rear sliding support, a sliding cylinder, a main bridge structure, a front support, a front end crawler, a crawler telescopic mechanism, a front bridge deck cylinder and a front bridge deck; the front end and the rear end of the main bridge structure are respectively connected with the rear bridge deck and the front bridge deck, the bottom surface of the rear bridge deck is provided with a rear bridge deck jacking cylinder, and the overturning action of the rear bridge deck is realized through the expansion and the contraction of the rear bridge deck jacking cylinder; the rear end of the main bridge structure is provided with a rear walking jacking cylinder which is sequentially connected with a rear walking guide mechanism and a rear walking wheel; the bottom surface of the rear end of the main bridge structure is in sliding connection with a rear sliding support, and the rear sliding support is connected with the sliding oil cylinder; the front bridge deck lifting oil cylinder is arranged on the bottom surface of the front bridge deck, and the overturning action of the front bridge deck is realized through the expansion and the contraction of the front bridge deck lifting oil cylinder; the front end bottom of the main bridge structure is provided with a front support, the crawler telescopic mechanism is arranged on the front support, and the crawler telescopic mechanism is connected with the front crawler;
The self-propelled inverted arch template comprises a rear travelling wheel, a jacking jack, a guide rod, a guide seat, an inverted arch template, a filling plug template and a template support, wherein the inverted arch plug template and a template end beam; the rear travelling wheel is arranged at the rear end of the inverted arch template, the guide seat is arranged at the top end of the rear travelling wheel, the guide rod is arranged in the guide seat, the top end of the guide rod is connected with the lifting jack, and the guide rod slides along the guide seat through the lifting action of the lifting jack to prop the inverted arch template off the ground; the template end beams are connected with the left side and the right side of the inverted arch template, the filling plug templates are arranged at the template end Liang Zhongbu, the template supports are symmetrically arranged at the two ends of the template end beams and used for adjusting the horizontal position of the inverted arch template in place, and the inverted arch plug templates are detachably arranged on the filling plug templates;
the rear end bottom surface of the main bridge structure is provided with a rear sliding clamping groove, a sliding cavity is formed between the rear sliding clamping groove and the main bridge structure, and the rear sliding support is used for supporting the main bridge structure, is arranged in the sliding cavity and is in sliding connection with the main bridge structure;
The front end crawler belt is connected with the crawler belt telescopic mechanism through a crawler belt pin shaft, and the front end crawler belt rotates in the front-back direction;
guard rails are vertically arranged on the left side and the right side of the top surface of the main bridge structure.
2. An apparatus for single-wire tunnel inverted arch construction according to claim 1, wherein: the bridge deck center and the bridge deck of the main bridge structure are provided with wheel limiting beams which prevent wheels from falling in the same direction.
3. An apparatus for single-wire tunnel inverted arch construction according to claim 1, wherein: the section of the rear sliding support is of a special-shaped structure with a wide upper part and a narrow lower part.
4. An apparatus for single-wire tunnel inverted arch construction according to claim 1, wherein: and the left side and the right side of the bottom surface of the main bridge structure are provided with a sliding rail of the overhead arch form for lifting and sliding the front end of the self-propelled inverted arch form.
5. An apparatus for single-wire tunnel inverted arch construction according to claim 1, wherein: the rear bridge deck and the front bridge deck are connected with the front end and the rear end of the main bridge structure through pin shafts.
6. An apparatus for single-wire tunnel inverted arch construction according to claim 1, wherein: the main bridge structure adopts a truss girder structure welded by industrial steel.
7. A construction method of an apparatus for single-line tunnel inverted arch construction according to any one of claims 1 to 6, characterized by comprising the steps of:
1) The removal of self-propelled invert landing stage includes:
1.1 Marking a midline on the inverted arch base surface;
1.2 Taking the central line marked on the inverted arch basal plane as a reference to move the self-propelled inverted arch trestle forward, and if the self-propelled inverted arch trestle deviates from the central line in the moving process, correcting by adopting a rear sliding oil cylinder;
1.3 The bottom substrate of the trestle is cleaned after the self-propelled inverted arch trestle moves to a specified position;
2) Binding inverted arch steel bar
3) The self-propelled invert form moves and positions, including:
3.1 Lifting the rear travelling wheel, supporting the rear end of the inverted arch template from the ground, lifting the template end Liang Laqi by using a chain block at the front end of the inverted arch template, and pushing the inverted arch template to move forward to a specified position along the sliding track of the inverted arch template by the rear travelling wheel;
3.2 Inverted arch form rear end positioning: the rear end of the inverted arch template is clamped in the groove by taking a group of lined grooves as a benchmark;
3.3 Inverted arch form front end positioning: according to the measurement control points, lifting a template end beam by using a chain block to adjust the height position of the inverted arch template, supporting and adjusting the horizontal position of the inverted arch template by using a template, when the inverted arch template is adjusted, taking the top of the outer side of the inverted arch template as a measurement positioning point, performing rough adjustment, performing precise adjustment, and then installing an inverted arch plug template;
3.4 After the positioning is finished, supporting the template to the ground, supporting the side walls at the same time, punching fixed rivets on the side walls at two sides, loosening the chain block, and separating the self-propelled inverted arch template from the self-propelled inverted arch trestle;
4) Casting concrete, comprising:
4.1 Pouring concrete to the inverted arch according to the sequence of the middle part and the two sides;
4.2 After the pouring operation is finished and the inverted arch concrete reaches the design strength, pouring inverted arch filling concrete to the design elevation;
5) And (3) demolding the self-propelled inverted arch template: and 4.2) after the operation is finished, demolding after the inverted arch filled concrete reaches the design strength, wherein the demolding comprises the following steps of:
5.1 Removing the fixing rivet;
5.2 Removing the inverted arch plug template;
5.3 The rear end of the inverted arch template is lifted and demoulded by a lifting jack;
5.4 The formwork support at the front end of the inverted arch formwork is separated from the ground and the side walls, and the demolding is completed through the lifting and demolding of the chain block.
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| CN111535835B (en) * | 2020-05-27 | 2022-02-08 | 李军 | Template system for inverted arch stack bridge abutment |
| CN112943303B (en) * | 2021-02-23 | 2022-11-01 | 中建桥梁有限公司 | Tunnel inverted arch construction method adopting hydraulic arc-shaped template |
| CN114233331B (en) * | 2021-12-30 | 2023-11-21 | 中铁隧道局集团有限公司 | Inverted arch synchronous lining trolley for TBM construction and inverted arch synchronous lining construction method |
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| CN205990920U (en) * | 2016-01-29 | 2017-03-01 | 黄高飞 | A kind of tunnel inverted arch self-propelled trestle |
| CN107143351A (en) * | 2016-03-01 | 2017-09-08 | 中铁二局第四工程有限公司 | A kind of self-propelled tunnel overlength inverted arch moving die plate steel box-girder trestle |
| CN205936655U (en) * | 2016-08-29 | 2017-02-08 | 中国水利水电第七工程局有限公司 | Hydraulic tunnel is landing stage formula inverted arch slip form construction device by oneself |
| CN206722852U (en) * | 2017-05-05 | 2017-12-08 | 中铁十二局集团有限公司 | A kind of mobile inverted arch trestle of growing up for carrying inverted arch template |
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