Construction method for cross partition wall of tunnel ventilation inclined shaft and combined formwork trolley

Abstract

The invention discloses a construction method for a cross partition wall of a tunnel ventilation inclined shaft and a combined type formwork trolley, and belongs to the technical field of tunnel construction methods and devices. The invention aims to provide the construction method of the inclined shaft cross partition wall and the combined formwork trolley which are reasonable in construction sequence, good in pouring quality and high in construction speed. According to the technical scheme, the construction method mainly comprises the steps that a cross partition wall is divided into a lower T-shaped partition wall and an upper T-shaped partition wall, pouring of the lower T-shaped partition wall is conducted firstly, then pouring of the upper T-shaped partition wall is conducted, in this way, longitudinal construction joints between the left transverse partition wall and the right transverse partition wall and the vertical partition wall are eliminated, and the construction quality of the transverse partition walls is guaranteed. The combined type formwork trolley comprises a left side transverse partition wall formwork trolley and a right side transverse partition wall formwork trolley which are used for pouring a lower T-shaped partition wall, and a left side vertical partition wall formwork trolley and a right side vertical partition wall formwork trolley which are used for pouring an upper T-shaped partition wall. The method is used for pouring the cross partition wall of the tunnel ventilation inclined shaft.

Description

Technical Field

[0001] The invention discloses a construction method for a cross partition wall of a tunnel ventilation inclined shaft and a combined formwork trolley, belonging to the technical field of tunnel construction methods and devices. Background Art

[0002] The cross partition wall of the tunnel ventilation inclined shaft has the characteristics of thin wall, large span, high height and steep slope. Before the construction of the cross partition wall, a ceiling pull rod should be set. The formwork can be removed only after the concrete of the cross partition wall reaches the design strength, and the cross partition wall shall not produce downward deflection. In view of the above characteristics, there are generally two commonly used construction methods. One is to use the bracket method to construct the vertical partition wall as a whole first, and then construct the cross partition wall on the left and right sides. The vertical partition wall and the cross partition after forming will form two construction joints on the left and right. The installation and removal of the bracket requires a lot of manpower and time, and the safety, quality and construction period cannot be guaranteed; the other is to use a cross partition wall integral lining trolley. The trolley is relatively complex in design and difficult to operate during the actual construction process. At the same time, the concrete of the cross partition wall must reach the specified strength before the formwork can be moved. The construction period of each cycle is long, and it is difficult to meet the safety, quality and construction period requirements on site. And because the tunnel ventilation inclined shaft usually has a steep slope, whether it is the bracket method or the integral lining trolley, there are safety hazards that are easy to become unstable during the construction process, which is extremely unfavorable to the safety requirements of on-site construction. Summary of the invention

[0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a construction method and a combined formwork trolley for a tunnel ventilation inclined shaft cross partition wall having a reasonable construction sequence, good casting quality, fast construction speed, and easy operation of the trolley used.

[0004] To achieve the above object, the present invention adopts the following technical solution, a construction method of a cross partition wall of a tunnel ventilation inclined shaft, comprising the following steps:

[0005] The first step is construction preparation;

[0006] The second step is to determine the construction direction of the cross partition wall: from the bottom of the inclined shaft to the direction of the opening; at the same time, determine the construction process: to be carried out in sections, first construct the lower "┬"-shaped partition wall, and then construct the upper "|"-shaped partition wall;

[0007] The third step is to start from the bottom of the inclined shaft to tie the steel bars and construct the protective layer of the lower "┬"-shaped partition wall;

[0008] Step 4: The left and right diaphragm wall formwork trolleys at the bottom are in place and the formwork is positioned. After completion, the end formwork is installed;

[0009] Step 5: Use a concrete pump to pour the lower “┬”-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time.

[0010] Step 6: After the lower “┬”-shaped partition wall concrete is poured, watering and curing are carried out. When the concrete strength reaches 75% of the design strength, the left and right transverse partition wall formwork trolleys are demoulded, and at the same time, the upper “|”-shaped partition wall reinforcement is tied;

[0011] Step 7: hoist the left vertical partition wall formwork trolley and the right vertical partition wall formwork trolley onto the cast lower “┬”-shaped partition wall, move the left horizontal partition wall formwork trolley and the right horizontal partition wall formwork trolley forward to the next station to construct the next section of the lower “┬”-shaped partition wall, and install the end formwork after the left vertical partition wall formwork trolley and the right vertical partition wall formwork trolley are in place and the formwork is positioned;

[0012] Step 8: Use a concrete pump to pour the upper “|”-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time.

[0013] Step 9: After the upper “|”-shaped partition wall concrete is poured, watering and curing are carried out. When the concrete strength reaches 75% of the design strength, the left vertical partition wall formwork trolley and the right vertical partition wall formwork trolley are demoulded and moved forward to the next station to carry out the construction of the next section of the upper “|”-shaped partition wall;

[0014] In the tenth step, the left-side horizontal partition wall formwork trolley, the right-side horizontal partition wall formwork trolley and the left-side vertical partition wall formwork trolley and the right-side vertical partition wall formwork trolley are constructed in a circular manner until the inclined shaft opening.

[0015] Preferably, the first step includes the following aspects:

[0016] a. Locate the centerline of the inclined shaft and both sides of the shaft wall, determine the position of the cross partition wall, plant reinforcement at the determined position, and roughen the concrete surface that the cross partition wall will contact;

[0017] b. Clean and flush the inclined shaft road surface, clean and remove the machinery, tools, water tanks, etc. that affect the construction of the cross partition wall, and strengthen the tunnel pumping and ventilation work.

[0018] A combined formwork trolley for a cross partition wall of a tunnel ventilation inclined shaft, comprising a left transverse partition wall formwork trolley and a right transverse partition wall formwork trolley;

[0019] The left side transverse partition wall formwork trolley comprises a first frame, a first vertical oil cylinder, a first translation mechanism and a first formwork assembly, the first frame comprises a gate-shaped bracket and a first longitudinal connecting beam, four gate-shaped brackets are arranged in a row, and the bottom is connected as a whole by two first longitudinal connecting beams, four first vertical oil cylinders and four first translation mechanisms are respectively arranged at the four corners of the first frame, the upper end of the first vertical oil cylinder is fixed on the leg of the corresponding gate-shaped bracket, and the lower end is slidably connected to the first translation mechanism;

[0020] The first template assembly includes a first inclined template, a transverse template, a lower vertical template, a second inclined template, a first longitudinal support beam and a first demolding cylinder. The first inclined template, the transverse template, the lower vertical template and the second inclined template are hinged together in sequence. The transverse template is located above the first frame, the first inclined template is located on the left side of the first frame, the lower vertical template and the second inclined template are located on the right side of the first frame, and a plurality of first longitudinal support beams are fixed between the transverse template and the first frame. The first inclined template, the lower vertical template and the second inclined template are connected to the first frame through a plurality of first demolding cylinders.

[0021] The structure of the right side transverse partition wall formwork trolley is symmetrical to the structure of the left side transverse partition wall formwork trolley and is arranged opposite to each other.

[0022] Furthermore, it also includes a left vertical partition wall formwork trolley and a right vertical partition wall formwork trolley;

[0023] The left vertical partition wall template trolley includes a second frame, a second vertical oil cylinder, a second translation mechanism and a second template assembly. The second frame includes a right-angle triangle bracket and a second longitudinal connecting beam. Four right-angle triangle brackets are arranged in a row and connected as a whole by two second longitudinal connecting beams at the bottom. Four second vertical oil cylinders and four second translation mechanisms are respectively arranged at the four corners of the second frame. The upper end of the second vertical oil cylinder is fixed on the corresponding right-angle triangle bracket, and the lower end is slidably connected to the second translation mechanism.

[0024] The second template assembly includes a third inclined template, an upper vertical template, a fourth inclined template and a second demoulding oil cylinder. The third inclined template, the upper vertical template and the fourth inclined template are hinged together from top to bottom and are located on the right side of the second frame, and are connected to the second frame through a plurality of second demoulding oil cylinders.

[0025] The structure of the right vertical partition wall formwork trolley is symmetrical to the structure of the left vertical partition wall formwork trolley and is arranged opposite to each other.

[0026] Furthermore, the left side transverse partition wall formwork trolley further comprises a first walking mechanism and a first supporting oil cylinder, and a set of first walking mechanisms is respectively installed below the middle of the two first longitudinal connecting beams;

[0027] The first traveling mechanism comprises a rail, a rail base, a driving cylinder and a traveling wheel set, wherein the rail is fixed on a rail base of equal length, two traveling wheel sets are installed on the rail at intervals, one end of the driving cylinder is connected to one traveling wheel set, and the other end is connected to the rail base, and two rail clamping wheels are fixed to each traveling wheel set, the two rail clamping wheels are located on both sides of the rail, and the tops of the two rail clamping wheels are against the bottom surface of the rail head;

[0028] There are multiple first supporting oil cylinders, all of which have upper ends fixed on the first frame and lower ends supporting the ground.

[0029] Furthermore, the left vertical partition wall formwork trolley further comprises a second walking mechanism and a second supporting oil cylinder, and a set of second walking mechanisms is respectively installed below the middle of the two second longitudinal connecting beams;

[0030] The structure of the second walking mechanism is the same as that of the first walking mechanism;

[0031] There are multiple second supporting oil cylinders, all of which have upper ends fixed on the second frame and lower ends supporting the ground.

[0032] Preferably, an anti-slip pad is installed on the bottom surface of the rail base.

[0033] Preferably, limit baffles are provided at both ends of the rail.

[0034] Furthermore, the left-side diaphragm formwork trolley also includes an anti-slip diagonal brace, one end of a plurality of anti-slip diagonal braces is hinged on the first frame, and the other end rests on the anchor steel bar, and the anchor steel bar is inserted into the inclined shaft ground and fixed.

[0035] Preferably, counterweights are provided on both the first longitudinal connecting beam and the second longitudinal connecting beam.

[0036] Compared with the prior art, the present invention has the following beneficial effects.

[0037] 1. The construction method of the present invention constructs the cross partition wall in sections. First, the lower "┬"-shaped partition wall is constructed; then the upper "|"-shaped partition wall is constructed, and the lower "┬"-shaped partition wall is constructed as a whole, eliminating the longitudinal construction joints between the left and right horizontal partition walls and the vertical partition walls, thereby ensuring the construction quality of the horizontal partition wall.

[0038] 2. In the present invention, the vertical partition wall formwork trolley travels, reinforces and constructs on the lower "┬"-shaped partition wall whose strength reaches 75% of the design strength, which ensures construction safety, speeds up the operation time of each cycle, improves the construction progress, saves construction costs, and meets the design requirements that the formwork can only be removed after the partition wall concrete reaches the design strength, and the horizontal partition wall must not produce downward deflection, which has extremely wide promotion value.

[0039] 3. In the present invention, the design of the traveling mechanism eliminates the need to lay tracks separately during construction, thereby improving construction progress and saving engineering costs. In addition, the design of the anti-slip diagonal brace avoids the potential safety hazard of the trolley slipping during the pouring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments are briefly introduced below.

[0041] Figure 1 It is a schematic structural diagram of the combined template trolley in the present invention.

[0042] Figure 2 It is a structural schematic diagram of the left side horizontal partition wall formwork trolley in the present invention.

[0043] Figure 3 It is a structural schematic diagram of the left vertical partition wall formwork trolley in the present invention.

[0044] Figure 4 It is a schematic structural diagram of the first walking mechanism in the present invention.

[0045] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0046] Figure 6 It is a schematic structural diagram of the cross partition wall in the present invention.

[0047] Figure 7 It is a structural schematic diagram of the lower "┬"-shaped partition wall of the present invention.

[0048] In the figure: 1 is a left side transverse partition wall template trolley, 11 is a first frame, 111 is a door-shaped bracket, 112 is a first longitudinal connecting beam, 12 is a first vertical cylinder, 13 is a first translation mechanism, 14 is a first template assembly, 141 is a first inclined template, 142 is a horizontal template, 143 is a lower vertical template, 144 is a second inclined template, 145 is a first longitudinal support beam, 146 is a first demoulding cylinder, 15 is an anti-slip diagonal brace, 16 is an anchor steel bar, 17 is a first walking mechanism, 171 is a rail, 172 is a rail base, 173 is a drive Cylinder, 174 is the walking wheel group, 175 is the track clamping wheel, 176 is the anti-slip gasket, 177 is the limit baffle, 18 is the first supporting cylinder, 2 is the right side horizontal partition wall template trolley, 3 is the left side vertical partition wall template trolley, 31 is the second frame, 311 is the right angle triangle bracket, 32 is the second vertical cylinder, 33 is the second translation mechanism, 34 is the second template assembly, 341 is the third inclined template, 342 is the upper vertical template, 343 is the fourth inclined template, 344 is the second demoulding cylinder, 35 is the second supporting cylinder, and 4 is the right side vertical partition wall template trolley. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The present invention provides the following embodiments.

[0051] The invention discloses a method for constructing a cross partition wall of a tunnel ventilation inclined shaft, comprising the following steps:

[0052] The first step, construction preparation, includes the following aspects:

[0053] a. Locate the centerline of the inclined shaft and both sides of the shaft wall, determine the position of the cross partition wall, plant reinforcement at the determined position, and roughen the concrete surface that the cross partition wall will contact;

[0054] b. Clean and flush the inclined shaft road surface, clean and remove the machinery, tools, water tanks, etc. that affect the construction of the cross partition wall, and strengthen the tunnel pumping and ventilation work;

[0055] The second step is to determine the construction direction of the cross partition wall: from the bottom of the inclined shaft to the direction of the opening; at the same time, determine the construction process: to be carried out in sections, first construct the lower "┬"-shaped partition wall, and then construct the upper "|"-shaped partition wall;

[0056] The third step is to start from the bottom of the inclined shaft to tie the steel bars and construct the protective layer of the lower "┬"-shaped partition wall;

[0057] The fourth step is to put the left side diaphragm formwork trolley 1 and the right side diaphragm formwork trolley 2 at the lower part in place and position the formwork. After completion, install the end formwork. The two diaphragm formwork trolleys here are to the left side diaphragm formwork trolley 1 and the right side diaphragm formwork trolley 2;

[0058] Step 5: Use a concrete pump to pour the lower “┬”-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time.

[0059] Step 6: After the lower “┬”-shaped partition wall concrete is poured, watering and curing are carried out. After the concrete strength reaches 75% of the design strength, the left side transverse partition wall formwork trolley 1 and the right side transverse partition wall formwork trolley 2 are demoulded, and at the same time, the upper “|”-shaped partition wall reinforcement is tied;

[0060] Step 7: hoist the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 onto the cast lower “┬”-shaped partition wall, move the left horizontal partition wall formwork trolley 1 and the right horizontal partition wall formwork trolley 2 forward to the next station to carry out the construction of the next section of the lower “┬”-shaped partition wall, put the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 in place and position the formwork before installing the end formwork;

[0061] Step 8: Use a concrete pump to pour the upper “|”-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time.

[0062] Step 9: After the upper “|”-shaped partition wall concrete is poured, watering and curing are carried out. After the concrete strength reaches 75% of the design strength, the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 are demoulded and moved forward to the next station to repeat steps 7 and 8 to carry out the construction of the next section of the upper “|”-shaped partition wall;

[0063] In the tenth step, the left side horizontal partition wall formwork trolley 1, the right side horizontal partition wall formwork trolley 2 and the left side vertical partition wall formwork trolley 3, and the right side vertical partition wall formwork trolley 4 are constructed in a circular manner until the inclined shaft opening.

[0064] The cross partition wall to be constructed in the present invention is as follows Figure 6 As shown, according to the method of the present invention, the cross partition wall is divided into Figure 7 The lower “┬”-shaped partition wall and the upper “|”-shaped partition wall shown are cast separately.

[0065] like Figure 1 , Figure 2 As shown, a combined formwork trolley for a cross partition wall of a tunnel ventilation inclined shaft of the present invention comprises a left transverse partition wall formwork trolley 1 and a right transverse partition wall formwork trolley 2;

[0066] The left side transverse partition wall formwork trolley 1 includes a first frame 11, a first vertical oil cylinder 12, a first translation mechanism 13 and a first formwork assembly 14. The first frame 11 includes a gate-shaped bracket 111 and a first longitudinal connecting beam 112. Four gate-shaped brackets 111 are arranged in a row, and the bottom is connected as a whole by two first longitudinal connecting beams 112. Four first vertical oil cylinders 12 and four first translation mechanisms 13 are respectively arranged at the four corners of the first frame 11. The upper end of the first vertical oil cylinder 12 is fixed on the support leg of the corresponding gate-shaped bracket 111, and the lower end is slidably connected to the first translation mechanism 13.

[0067] The first template assembly 14 includes a first inclined template 141, a transverse template 142, a lower vertical template 143, a second inclined template 144, a first longitudinal support beam 145 and a first demolding cylinder 146. The first inclined template 141, the transverse template 142, the lower vertical template 143 and the second inclined template 144 are hinged together in sequence. The transverse template 142 is located above the first frame 11, the first inclined template 141 is located on the left side of the first frame 11, the lower vertical template 143 and the second inclined template 144 are located on the right side of the first frame 11, and multiple first longitudinal support beams 145 are fixed between the transverse template 142 and the first frame 11. The first inclined template 141, the lower vertical template 143 and the second inclined template 144 are connected to the first frame 11 through multiple first demolding cylinders 146.

[0068] The structure of the right side transverse partition wall formwork trolley 2 is symmetrical to the structure of the left side transverse partition wall formwork trolley 1 and they are arranged opposite to each other.

[0069] The left side transverse partition wall formwork trolley 1 and the right side transverse partition wall formwork trolley 2 are used to cast the lower “┬”-shaped partition wall.

[0070] like Figure 1 , Figure 3As shown, the present invention also includes a left vertical partition wall formwork trolley 3 and a right vertical partition wall formwork trolley 4;

[0071] The left vertical partition wall template trolley 3 includes a second frame 31, a second vertical oil cylinder 32, a second translation mechanism 33 and a second template assembly 34. The second frame 31 includes a right-angled triangle bracket 311 and a second longitudinal connecting beam. Four right-angled triangle brackets 311 are arranged in a row, and the bottom is connected as a whole by two second longitudinal connecting beams. The four second vertical oil cylinders 32 and the four second translation mechanisms 33 are respectively arranged at the four corners of the second frame 31. The upper end of the second vertical oil cylinder 32 is fixed on the corresponding right-angled triangle bracket 311, and the lower end is slidably connected to the second translation mechanism 33.

[0072] The second template assembly 34 includes a third inclined template 341, an upper vertical template 342, a fourth inclined template 343 and a second demoulding cylinder 344. The third inclined template 341, the upper vertical template 342 and the fourth inclined template 343 are hinged together from top to bottom and are located on the right side of the second frame 31. They are connected to the second frame 31 through a plurality of second demoulding cylinders 344.

[0073] The structure of the right vertical partition wall formwork trolley 4 is symmetrical to that of the left vertical partition wall formwork trolley 3 and they are arranged opposite to each other.

[0074] The left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 are used to cast the upper “|”-shaped partition wall.

[0075] like Figure 4 , Figure 5 As shown, in order to facilitate movement, the left transverse partition wall formwork trolley 1 also includes a first walking mechanism 17 and a first supporting cylinder 18, and a set of first walking mechanisms 17 is installed at the lower middle part of the two first longitudinal connecting beams 112;

[0076] The first traveling mechanism 17 comprises a rail 171, a rail base 172, a driving cylinder 173 and a traveling wheel set 174. The rail 171 is fixed on the rail base 172 of equal length. Two traveling wheel sets 174 are installed on the rail 171 at intervals. One end of the driving cylinder 173 is connected to one traveling wheel set 174, and the other end is connected to the rail base 172. Two rail clamping wheels 175 are also fixed to each traveling wheel set 174. The two rail clamping wheels 175 are located on both sides of the rail 171, and the tops thereof are against the bottom surface of the rail head of the rail 171.

[0077] The first walking mechanism 17 is located between the front and rear first translation mechanisms 13 , and the length of the rail 171 is smaller than the distance between the two first translation mechanisms 13 .

[0078] There are multiple first supporting oil cylinders 18 , all of which have upper ends fixed on the first frame 11 and lower ends supporting the ground.

[0079] In order to facilitate movement, the left vertical partition wall formwork trolley 3 also includes a second walking mechanism and a second supporting cylinder 35, and a set of second walking mechanisms is installed below the middle of the two second longitudinal connecting beams;

[0080] The structure of the second walking mechanism is the same as that of the first walking mechanism 17;

[0081] There are multiple second supporting oil cylinders 35 , each of which has an upper end fixed on the second frame 31 and a lower end supporting the ground.

[0082] Regarding the first supporting oil cylinder 18, its function is to support the entire trolley, a corbel can be provided on the first longitudinal connecting beam 112, and the first supporting oil cylinder 18 can be fixed on the corbel, or a cross beam can be provided between two first longitudinal connecting beams 112, and the first supporting oil cylinder 18 can be fixed under the cross beam. The second supporting oil cylinder 35 is the same.

[0083] An anti-skid pad 176 is installed on the bottom surface of the rail base 172 .

[0084] Limiting baffles 177 are provided at both ends of the rail 171 .

[0085] The left diaphragm wall formwork trolley 1 also includes an anti-slip diagonal brace 15, one end of which is hinged on the first frame 11, and the other end is against an anchoring steel bar 16, and the anchoring steel bar 16 is inserted into the inclined shaft ground for fixing. The anti-slip diagonal brace 15 is arranged at the downhill end of the first frame 11 to prevent the first frame 11 from shifting downward.

[0086] The first longitudinal connecting beam 112 and the second longitudinal connecting beam are both provided with counterweights. Since the centers of the first template assembly 14 and the second template assembly 34 in the present invention are both located on one side of the trolley, for greater stability, counterweights can be provided on the first longitudinal connecting beam 112 and the second longitudinal connecting beam close to the shaft wall for balance, and the counterweights can be concrete counterweights.

[0087] The first translation mechanism 13 includes a first base and a first translation cylinder. The bottom end of the first vertical cylinder is slidably connected to the first base through a connecting block. The first translation cylinder is horizontally arranged, with one end connected to the first base and the other end connected to the connecting block.

[0088] The second translation mechanism 33 includes a second base and a second translation cylinder. The bottom end of the second vertical cylinder is slidably connected to the second base through a connecting block. The second translation cylinder is horizontally arranged, with one end connected to the second base and the other end connected to the connecting block.

[0089] The working process of the combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft of the present invention is as follows.

[0090] The left-side diaphragm formwork trolley 1 and the right-side diaphragm formwork trolley 2 are in place through their respective traveling mechanisms. When the first traveling mechanism 17 is moving: the first vertical cylinder 12 and the first supporting cylinder 18 are retracted to support the rail base 172, and the driving cylinder 173 is retracted to allow the walking wheel group 174 to move on the rail 171. The walking wheel group 174 stops after reaching the front end of the rail 171, and the first supporting cylinder 18 is extended to support the entire trolley. At this time, the rail 171 and the rail base 172 are lifted together with the walking wheel group 174 under the action of the rail clamping wheel 175, and the driving cylinder 173 is extended to push the rail 171 and the rail base 172 forward. Then the first supporting cylinder 18 is retracted, and the rail base 172 is supported on the ground again. Repeat the above actions to realize the movement of the trolley.

[0091] The structure and the traveling mode of the second traveling mechanism in the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 are the same as the first traveling mechanism 17 .

[0092] After the left side transverse partition wall formwork trolley 1 and the right side transverse partition wall formwork trolley 2 are in place, the horizontal position is adjusted and each formwork is positioned through the first vertical oil cylinder 12, the first translation mechanism 13, and the first demoulding oil cylinder 146. The lower end of the second inclined formwork 144 cooperates with the wooden formwork. The lower vertical formwork 143 in the left side transverse partition wall formwork trolley 1 and the right side transverse partition wall formwork trolley 2 are opposite, and the spacing between them is the thickness of the vertical partition wall in the lower "┬" type partition wall. After the end formwork is installed, the lower "┬" type partition wall of this section can be poured. After the strength of the lower "┬" type partition wall of this section reaches 75% of the design strength, the first vertical oil cylinder 12 and the first demoulding oil cylinder 146 are retracted, each formwork is demoulded, and the left side transverse partition wall formwork trolley 1 and the right side transverse partition wall formwork trolley 2 move to the next station through the first walking mechanism 17, and repeat the above steps to pour the next lower "┬" type partition wall.

[0093] Before the left horizontal partition wall formwork trolley 1 and the right horizontal partition wall formwork trolley 2 move to the next workstation, the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 are hoisted onto the cast lower "┬"-shaped partition wall, put into place through the second walking mechanism, and then the horizontal position is adjusted and each formwork is positioned through the second translation mechanism 33 and the second demoulding cylinder 344. The upper vertical formworks 342 in the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 are opposite to each other, and the distance between them is the thickness of the vertical partition wall in the upper "|"-shaped partition wall. After installing the end formwork, the casting of the upper "|"-shaped partition wall of this section can be carried out.

[0094] After the strength of the upper "|"-shaped partition wall of this section reaches 75% of the design strength, the second demoulding cylinder 344 retracts, each template is demoulded, the left vertical partition wall template trolley 3 and the right vertical partition wall template trolley 4 move to the next workstation through the second walking mechanism, and the above steps are repeated to cast the next upper "|"-shaped partition wall.

[0095] The left side horizontal partition wall formwork trolley 1, the right side horizontal partition wall formwork trolley 2 and the left side vertical partition wall formwork trolley 3 and the right side vertical partition wall formwork trolley 4 repeat the construction cycle until the inclined shaft opening, thus completing the construction of the inclined shaft cross partition wall.

[0096] In the present invention, the length of the left horizontal partition wall formwork trolley 1 and the right horizontal partition wall formwork trolley 2 is designed to be 9m, and the length of the left vertical partition wall formwork trolley 3 and the right vertical partition wall formwork trolley 4 is designed to be 4.5m. In this way, the construction progress of the lower "┬"-shaped partition wall can be kept faster than the construction progress of the upper "|"-shaped partition wall, and sufficient technical rest time can be reserved between the two processes to ensure that when the upper "|"-shaped partition wall is constructed, the concrete strength of the lower "┬"-shaped partition wall has reached the construction requirements, thereby ensuring the construction quality and safety while also improving the construction progress.

[0097] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A construction method for a cross partition wall of a tunnel ventilation inclined shaft, characterized in that The following steps are involved: The first step is construction preparation; The second step is to determine the construction direction of the cross partition wall: from the bottom of the inclined shaft to the direction of the opening; at the same time, determine the construction process: to be carried out in sections, first construct the lower "┬"-shaped partition wall, and then construct the upper "|"-shaped partition wall; The third step is to start from the bottom of the inclined shaft to tie the steel bars and construct the protective layer of the lower "┬"-shaped partition wall; Step 4: The left side diaphragm template trolley (1) and the right side diaphragm template trolley (2) at the lower part are in place and the templates are positioned, and after completion, the end templates are installed; Step 5: Use a concrete pump to pour the lower "┬"-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time. Step 6: After the lower "┬" shaped partition wall concrete is poured, watering and curing are carried out. After the concrete strength reaches 75% of the design strength, the left side transverse partition wall formwork trolley (1) and the right side transverse partition wall formwork trolley (2) are demoulded, and at the same time, the upper "|" shaped partition wall reinforcement is tied; Step 7: hoist the left vertical partition wall formwork trolley (3) and the right vertical partition wall formwork trolley (4) onto the cast lower "┬"-shaped partition wall, move the left horizontal partition wall formwork trolley (1) and the right horizontal partition wall formwork trolley (2) forward to the next station to carry out the construction of the next section of the lower "┬"-shaped partition wall, and install the end formwork after the left vertical partition wall formwork trolley (3) and the right vertical partition wall formwork trolley (4) are in place and the formwork is positioned; Step 8: Use a concrete pump to pour the upper "|"-shaped partition wall. During the pouring process, strengthen the vibration and check the stability of the formwork in time. Step 9: After the upper "|"-shaped partition wall concrete is poured, watering and curing are carried out. After the concrete strength reaches 75% of the design strength, the left vertical partition wall template trolley (3) and the right vertical partition wall template trolley (4) are demoulded and moved forward to the next workstation to carry out the construction of the next section of the upper "|"-shaped partition wall; In the tenth step, the left side horizontal partition wall formwork trolley (1), the right side horizontal partition wall formwork trolley (2) and the left side vertical partition wall formwork trolley (3) and the right side vertical partition wall formwork trolley (4) are constructed in a circular manner until the inclined shaft opening.

2. The construction method of a tunnel ventilation inclined shaft cross partition wall according to claim 1, characterized in that: The first step includes the following aspects: a. Locate the centerline of the inclined shaft and both sides of the shaft wall, determine the position of the cross partition wall, plant reinforcement at the determined position, and roughen the concrete surface that the cross partition wall will contact; b. Clean and flush the inclined shaft road surface, clean and remove the machinery, tools, water tanks, etc. that affect the construction of the cross partition wall, and strengthen the tunnel pumping and ventilation work.

3. A combined formwork trolley for a cross partition wall of a tunnel ventilation inclined shaft, characterized in that: It comprises a left side transverse partition wall formwork trolley (1) and a right side transverse partition wall formwork trolley (2); The left-side transverse partition wall formwork trolley (1) comprises a first frame (11), a first vertical oil cylinder (12), a first translation mechanism (13) and a first formwork assembly (14); the first frame (11) comprises a gate-shaped bracket (111) and a first longitudinal connecting beam (112); four gate-shaped brackets (111) are arranged in a row and connected as a whole at the bottom by two first longitudinal connecting beams (112); four first vertical oil cylinders (12) and four first translation mechanisms (13) are respectively arranged at four corners of the first frame (11); the upper end of the first vertical oil cylinder (12) is fixed to the support leg of the corresponding gate-shaped bracket (111), and the lower end is slidably connected to the first translation mechanism (13); The first template assembly (14) comprises a first inclined template (141), a transverse template (142), a lower vertical template (143), a second inclined template (144), a first longitudinal support beam (145) and a first demoulding cylinder (146); the first inclined template (141), the transverse template (142), the lower vertical template (143) and the second inclined template (144) are hinged together in sequence; the transverse template (142) is located above the first frame (11); the first inclined template (141) is located on the left side of the first frame (11); the lower vertical template (143) and the second inclined template (144) are located on the right side of the first frame (11); a plurality of first longitudinal support beams (145) are fixed between the transverse template (142) and the first frame (11); the first inclined template (141), the lower vertical template (143) and the second inclined template (144) are connected to the first frame (11) via a plurality of first demoulding cylinders (146). The structure of the right side transverse partition wall formwork trolley (2) is symmetrical to the structure of the left side transverse partition wall formwork trolley (1), and they are arranged opposite to each other.

4. The combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft according to claim 3 is characterized by: It also includes a left vertical partition wall formwork trolley (3) and a right vertical partition wall formwork trolley (4); The left vertical partition wall template trolley (3) comprises a second frame (31), a second vertical oil cylinder (32), a second translation mechanism (33) and a second template assembly (34); the second frame (31) comprises a right-angled triangular bracket (311) and a second longitudinal connecting beam; four right-angled triangular brackets (311) are arranged in a row and connected as a whole at the bottom by two second longitudinal connecting beams; four second vertical oil cylinders (32) and four second translation mechanisms (33) are respectively arranged at the four corners of the second frame (31); the upper end of the second vertical oil cylinder (32) is fixed to the corresponding right-angled triangular bracket (311), and the lower end is slidably connected to the second translation mechanism (33); The second template assembly (34) comprises a third inclined template (341), an upper vertical template (342), a fourth inclined template (343) and a second demoulding cylinder (344); the third inclined template (341), the upper vertical template (342) and the fourth inclined template (343) are hinged together from top to bottom and are located on the right side of the second frame (31), and are connected to the second frame (31) via a plurality of second demoulding cylinders (344); The structure of the right vertical partition wall formwork trolley (4) is symmetrical to the structure of the left vertical partition wall formwork trolley (3), and they are arranged opposite to each other.

5. The combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft according to claim 4 is characterized in that: The left side transverse partition wall formwork trolley (1) further comprises a first walking mechanism (17) and a first supporting oil cylinder (18), and a set of first walking mechanisms (17) is respectively installed below the middle part of the two first longitudinal connecting beams (112); The first traveling mechanism (17) comprises a steel rail (171), a steel rail base (172), a driving oil cylinder (173) and a traveling wheel set (174); the steel rail (171) is fixed on a steel rail base (172) of equal length; two traveling wheel sets (174) are installed on the steel rail (171) at intervals; one end of the driving oil cylinder (173) is connected to one traveling wheel set (174) and the other end is connected to the steel rail base (172); two rail clamping wheels (175) are also fixed to each traveling wheel set (174); the two rail clamping wheels (175) are located on both sides of the steel rail (171) and the tops thereof are against the bottom surface of the rail head of the steel rail (171); There are a plurality of first supporting oil cylinders (18), all of which have upper ends fixed on the first frame (11) and lower ends supporting the ground.

6. The combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft according to claim 5 is characterized by: The left vertical partition wall formwork trolley (3) further comprises a second walking mechanism and a second supporting oil cylinder (35), and a set of second walking mechanisms is respectively installed below the middle part of the two second longitudinal connecting beams; The structure of the second walking mechanism is the same as that of the first walking mechanism (17); There are a plurality of second supporting oil cylinders (35), all of which have upper ends fixed on the second frame (31) and lower ends supporting the ground.

7. A combined formwork trolley for a cross partition wall of a tunnel ventilation inclined shaft according to claim 5 or 6, characterized in that: An anti-skid pad (176) is installed on the bottom surface of the rail base (172).

8. A combined formwork trolley for a cross partition wall of a tunnel ventilation inclined shaft according to claim 5 or 6, characterized in that: Limiting baffles (177) are provided at both ends of the steel rail (171).

9. The combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft according to claim 3 is characterized by: The left side transverse partition wall formwork trolley (1) also includes anti-slip diagonal braces (15), one end of a plurality of anti-slip diagonal braces (15) is hinged on the first frame (11), and the other end is against an anchoring steel bar (16), and the anchoring steel bar (16) is inserted into the inclined shaft ground and fixed.

10. The combined formwork trolley for the cross partition wall of the tunnel ventilation inclined shaft according to claim 4, characterized in that: The first longitudinal connecting beam (112) and the second longitudinal connecting beam are both provided with counterweights.

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