High-speed rail protection wall formwork and three-wall formwork system

Abstract

The invention relates to a high-speed rail three-wall formwork system which comprises first formworks arranged on the two sides of a protective wall and second formworks arranged on the two sides of a wall B. Sealing plates are arranged at the ends of the first formworks and the ends of the second formworks, each first formwork comprises a plurality of spliced sub-formworks, and a plurality of back ridges are vertically arranged on the back faces of the sub-formworks. A plurality of limiting screw rods stretch across the upper end of the first formwork, and the two ends of the limiting screw rods are fixedly connected with the upper ends of the back ridges correspondingly; a limiting and reinforcing tool is arranged on one side of the first formwork in parallel, a telescopic inclined supporting rod is hinged to the limiting and reinforcing tool, and the other end of the inclined supporting rod inclines upwards and is hinged to a back ridge. A telescopic first supporting rod is arranged between the limiting and reinforcing tool and the bottom of the back ridge; according to the high-speed rail protection wall formwork and the three-wall formwork system, the formwork is formed by splicing the sub-formworks, the structure is simple, limiting and supporting are sufficient, the formwork is suitable for aluminum alloy formworks, and the formwork is lighter and more modularized.

Description

Technical Field

[0001] The invention relates to the field of construction, and in particular to a high-speed railway protective wall formwork and a three-wall formwork system. Background Art

[0002] In the construction of railway bridge decks, the "three walls" are important components. The "three walls" refer to the A wall, B wall and protective wall, which are mainly used to prevent accidental impacts, wind loads and other external factors from causing damage to the main structure of the bridge, and also play the role of railway track protection; the A wall formwork is the core part of the high-speed railway three-wall formwork system. The A wall has the function of supporting and fixing the track, which can ensure the stability and safety of the track when the train is running at high speed; the B wall formwork is the auxiliary part of the high-speed railway three-wall formwork system, which is mainly used to connect the A wall formwork and the protective wall formwork to enhance the integrity and stability of the entire formwork system; the protective wall formwork is an important part of the high-speed railway three-wall formwork system. The protective wall has excellent protective function and can resist the erosion of natural factors such as wind, sand and rain in the external environment, protecting the track and train from damage; at the same time, the protective wall also has a certain sound insulation effect, providing passengers with a more comfortable riding environment.

[0003] The three-wall structures of existing railway projects are mostly constructed with steel formwork. Steel formwork has problems such as heavy weight, high positioning difficulty, and low installation efficiency. Cranes and other lifting equipment must be used during construction and transportation, and the machine-shift costs are high. The joints of steel formwork are not precise, which will affect the size and appearance of concrete components after molding. In addition, steel formwork is easy to rust and must be polished and oiled before each use, resulting in high maintenance costs. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-speed railway protective wall formwork and a three-wall formwork system, in which the first formwork and the second formwork are assembled from sub-formworks, the entire formwork system has a simple structure and sufficient limiting support, and is suitable for aluminum alloy formworks, so that the formwork is more lightweight and modular, and the disassembly and assembly efficiency of the formwork is significantly improved; the aluminum alloy formwork is not easy to deform, and can provide the closed space required during the concrete construction process to ensure the size and appearance of the concrete after forming; the limiting screws, diagonal braces and beam clamps provide good fixed support for the formwork system, which can ensure that the formwork will not expand, deform or explode during concrete construction, and ensure that the concrete will not be deformed after forming, so that the structural size meets the requirements.

[0005] The technical solution of the present invention is as follows:

[0006] A high-speed railway three-wall formwork system includes a first formwork arranged on both sides of a protective wall and a closing plate arranged at the end of the protective wall, the first formwork includes a plurality of spliced ​​sub-formworks, and a plurality of back ribs are vertically arranged on the back of the sub-formworks; a plurality of limit screws are spanned across the upper end of the first formwork, and the two ends of the limit screws are respectively fixedly connected to the upper ends of the back ribs; a limit reinforcement tooling is arranged in parallel on one side of the first formwork, and a telescopic diagonal brace is hinged on the limit reinforcement tooling, and the other end of the diagonal brace is tilted upward and hinged to the back rib; a telescopic first brace is arranged between the limit reinforcement tooling and the back rib.

[0007] Among them, the upper / lower end faces of the sub-template are provided with mushroom-shaped sealing grooves; the upper and lower end faces of the sub-template are provided with tongues and grooves, and the tongue and grooves include protrusions arranged on the upper / lower end faces of the sub-template and grooves arranged on the lower / upper end faces of the sub-template, and the size of the grooves is slightly larger than the protrusions.

[0008] Among them, a plurality of vertical T-shaped slots are arranged on the back of the sub-template, and T-shaped bolts are slidably arranged in the T-shaped slots; the threaded ends of the T-shaped bolts pass through the back ribs and are locked and fixed by nuts; longitudinal connecting holes are respectively arranged at the upper and lower ends of the sub-template, and transverse connecting holes are respectively arranged at the left and right ends of the sub-template.

[0009] Among them, the limiting reinforcement tooling includes a long strip-shaped fixing rod and a support frame arranged on the fixing rod, the cross-section of the fixing rod is a groove-shaped, and the support frame is arranged in the groove of the fixing rod; the support frame includes a cross bar and fixing blocks arranged at both ends of the cross bar, the cross bar is parallel to the length direction of the fixing rod, and the width of the fixing block is equal to the groove width of the fixing rod; a first bolt is horizontally arranged on the back rib, one end of the diagonal support rod is hinged to the cross bar, and the other end is hinged to the first bolt; one end of the first support rod is supported on the fixing rod, and the other end is supported at the bottom of the back rib.

[0010] Among them, the limiting screw includes a limiting block in the middle and screws fixedly connected to the limiting block at both ends. The screws pass through the back ribs respectively and are locked and fixed by a nut. The length of the limiting block is equal to the width of the protective wall to be cast plus the thickness of the formwork on both sides.

[0011] Among them, an L-shaped template is arranged on the side of the first template away from the limiting reinforcement tooling, and the upper and lower ends of the L-shaped template are respectively connected to sub-templates; the L-shaped template is provided with a tongue and groove at the connection with the sub-template; a horizontal connecting block is arranged on the back of the L-shaped template, and the two ends of the connecting block are respectively fixedly connected to the back ribs on the upper and lower sides.

[0012] A three-wall formwork system comprises the above-mentioned high-speed railway protective wall formwork, wherein the protective wall is provided with a B wall on the side away from the limiting reinforcement tooling, and second formworks are provided on both sides of the B wall, and sealing plates are provided at the ends of the second formworks, and the second formworks include a plurality of spliced ​​sub-formworks; a second support rod is provided between the protective wall and the B wall, and one end of the second support rod is supported on the back rib, and the other end is supported on the second formwork.

[0013] A telescopic beam clamp is arranged above the second template, and the beam clamp includes a telescopic tube and clamp arms arranged at both ends of the telescopic tube, and the length of the clamp arms is slightly greater than the height of the second template.

[0014] Wherein, a vertical limiting rod is arranged on the back side of the second template, and the lower end of the limiting rod is fixed on the concrete table top.

[0015] Among them, a limiting tooling is provided at the upper end of the second template, and the limiting tooling includes a limiting cross bar and L-shaped clamping blocks arranged on the limiting cross bar and symmetrically arranged, and the spacing of the clamping blocks is equal to the spacing of the second templates on both sides of the B wall; screw rods are provided at both ends of the limiting cross bar, and conical foot pads are threadedly connected to the screw rods, and the conical foot pads at both ends of the limiting cross bar are respectively supported on the A wall and the back rib.

[0016] The present invention has the following beneficial effects:

[0017] 1. The first template of the present invention is assembled from sub-templates. The entire formwork system has a simple structure and sufficient limit support, and is suitable for aluminum alloy templates. The aluminum alloy template makes the formwork more lightweight and modular, and the disassembly and assembly efficiency of the formwork is significantly improved; the aluminum alloy template is not easy to deform, and can provide the closed space required during the concrete construction process to ensure the size and appearance of the concrete after forming.

[0018] 2. The position limiting reinforcement tooling of the present invention is provided with an oblique support rod and a first support rod, which can provide uniform lateral support for the first template, thereby ensuring that the template will not expand, deform or explode during concrete construction, and ensuring that the structural dimensions meet the requirements after concrete forming; the position limiting reinforcement tooling includes a fixed rod and a support frame, the position of the support frame on the fixed rod can be flexibly adjusted, and the lengths of the oblique support rod and the first support rod are adjustable, which can adapt to the support and fixation of templates with different structures and templates at different distances.

[0019] 3. A sealing strip is provided in the sealing groove of the present invention, and the sealing performance is greatly improved, which can avoid leakage and ensure the flatness of the appearance of the concrete component; the sealing groove is a mushroom-shaped structure, and is matched with a sealing strip of a corresponding shape, so the sealing performance is significantly improved, and the sealing strip will not fall off when the sub-forms are separated.

[0020] 4. The tongue and groove of the present invention not only enhances the sealing performance of the formwork, but also effectively transfers the load between the sub-formworks, thereby enhancing the safety and stability of the structure. In addition, the tongue and groove can increase the accuracy of the sub-formwork alignment, thereby avoiding the abnormal size of the concrete structure caused by the misalignment of the formwork.

[0021] 5. The T-shaped bolt of the present invention is movably arranged in the T-shaped slot, and can quickly adjust the position and fix the back rib to the back of the sub-template. The operation is simple and fast. In addition, it can adapt to the installation and fixing requirements of the back ribs in different positions and has high versatility.

[0022] 6. The limiting screw of the present invention can prevent the top of the template from deforming or exploding; the length of the limiting block of the limiting screw is equal to the width of the protective wall to be cast, which can ensure that the upper and lower spacings of the template are the same, thereby ensuring the verticality of the protective wall.

[0023] 7. The three-wall formwork system of the present invention connects the guard wall formwork and the B wall formwork as a whole through the second support rod and the limiting fixture, which not only ensures the required design spacing between the formworks, but also has higher overall structural strength, can effectively avoid deformation and dislocation of the formwork, and ensure that the structural dimensions of the guard wall and the B wall meet the requirements.

[0024] 8. A telescopic beam clamp is provided above the second template of the present invention, and the beam clamp can prevent abnormalities such as deformation or mold explosion at the top of the second template; the beam clamp is a telescopic structure, which can adapt to the pouring construction of different B wall thicknesses and has high versatility.

[0025] 9. The limiting fixture of the present invention can not only prevent the top of the second template from deforming or exploding, but also can adjust the accuracy of the upper opening of the second template by adjusting the telescopic distance of the conical foot pad, thereby ensuring the verticality of the wall. In addition, the limiting fixture is pressed on the top of the second template to prevent the second template from floating up abnormally. The overall structure of the limiting fixture is simple and its functions are diverse.

[0026] Figure Description

[0027] Figure 1 is a schematic diagram of the present invention;

[0028] Figure 2 For the present invention Figure 1 Enlarged view of the circle location;

[0029] Figure 3 is a side view of the present invention;

[0030] Figure 4 For the present invention Figure 3 Enlarged view of the circle location;

[0031] Figure 5 It is a side view of the sub-template of the present invention;

[0032] Figure 6It is a schematic diagram of the sub-form and T-bolts after being assembled according to the present invention;

[0033] Figure 7 It is a partial schematic diagram of the position of the first bolt of the present invention;

[0034] Figure 8 It is a schematic diagram of the limiting screw of the present invention;

[0035] Fig. 9 is a schematic diagram of a three-wall formwork system of the present invention;

[0036] Fig.10 is a side view of the three-wall formwork system of the present invention;

[0037] Fig.11 is a schematic diagram of the beam clamp of the present invention;

[0038] Fig.12 It is a schematic diagram of the limiting tooling of the present invention.

[0039] The reference numerals in the figure are as follows:

[0040] 1-first template, 2-sealing plate, 3-sub-template, 4-back rib, 5-limiting screw, 6-limiting reinforcement tooling, 7-oblique support rod, 8-first support rod, 9-sealing groove, 10-bump, 11-groove, 12-T-shaped slot, 13-T-shaped bolt, 14-nut, 15-longitudinal connecting hole, 16-transverse connecting hole, 17-fixing rod, 18-support frame, 19-cross bar, 20-fixing block, 21-first bolt, 22-limiting block, 23-screw, 24-L-shaped template, 25-connecting block, 26-second template, 27-second support rod, 28-beam clamp, 29-telescopic tube, 30-clamp arm, 31-limiting rod, 32-limiting tooling, 33-limiting cross bar, 34-clamp block, 35-conical foot pad. DETAILED DESCRIPTION

[0041] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] See also Figures 1 to 8 A high-speed railway protective wall formwork, comprising a first formwork 1 arranged on both sides of the protective wall and a sealing plate 2 arranged at the end of the protective wall, wherein the first formwork 1 comprises a plurality of spliced ​​sub-formworks 3, wherein the sub-formworks 3 are preferably made of high-strength aluminum alloy with a material density of 2700kg / m 3, which is only 1 / 3 of the density of steel, significantly reducing the overall weight of the formwork; a plurality of back ribs 4 are vertically arranged on the back of the sub-form 3; a plurality of limiting screws 5 are horizontally arranged on the upper end of the first formwork 1, and the two ends of the limiting screws 5 are respectively fixedly connected to the upper ends of the back ribs 4; a limited reinforcement tool 6 is arranged in parallel on one side of the first formwork 1, and a telescopic diagonal brace 7 is hinged on the limited reinforcement tool 6, and the other end of the diagonal brace 7 is tilted upward and hinged to the back rib 4; a telescopic first brace 8 is arranged between the limited reinforcement tool 6 and the back rib 4; the diagonal brace 7 and the first brace 8 can provide uniform lateral support to the first formwork 1, which can ensure that the first formwork 1 will not expand, deform or explode during concrete construction.

[0043] For further information, see Figures 4 to 5 The upper / lower end faces of the sub-template 3 are provided with mushroom-shaped sealing grooves 9, and sealing strips of similar shapes can be inserted into the sealing grooves 9, so that the sealing performance is greatly improved and leakage problems can be avoided; the sealing strip is a mushroom-shaped structure, and the sealing strip will not fall off when the sub-template 3 is separated; the upper and lower end faces of the sub-template 3 are provided with tongues and grooves, which not only enhance the sealing performance of the template, but also effectively transfer the load between the sub-templates 3, thereby enhancing the safety and stability of the structure; the tongue and groove include a protrusion 10 provided on the upper / lower end faces of the sub-template 3 and a groove 11 provided on the lower / upper end faces of the sub-template 3, and the size of the groove 11 is slightly larger than the protrusion 10; the docking of the tongue and groove can increase the accuracy of the positioning of the sub-template 3, and can avoid the abnormal size of the concrete structure caused by the misalignment of the template.

[0044] Furthermore, a plurality of vertical T-shaped slots 12 are provided on the back of the sub-template 3, and T-shaped bolts 13 are slidably provided in the T-shaped slots 12; the threaded ends of the T-shaped bolts 13 pass through the back ribs 4 and are locked and fixed by nuts 14, and the T-shaped bolts 13 can move in the T-shaped slots 12, can quickly adjust the position and fix the back ribs 4 to the back of the sub-template 3, the operation is simple and fast, can adapt to the installation and fixing requirements of the back ribs 4 in different positions, and has high versatility; the upper and lower ends of the sub-template 3 are respectively provided with longitudinal connecting holes 15, and the longitudinal connecting holes 15 are used for connecting and fixing the upper and lower sub-templates 3, and the left and right ends of the sub-template 3 are respectively provided with transverse connecting holes 16, and the transverse connecting holes 16 are used for connecting and fixing the left and right sub-templates 3.

[0045] Furthermore, the position limiting reinforcement tooling 6 includes a long strip fixing rod 17 and a support frame 18 arranged on the fixing rod 17, the cross section of the fixing rod 17 is a groove shape, and the support frame 18 is arranged in the groove of the fixing rod 17; the support frame 18 includes a cross bar 19 and fixing blocks 20 arranged at both ends of the cross bar 19, the cross bar 19 is parallel to the length direction of the fixing rod 17, the width of the fixing block 20 is equal to the groove width of the fixing rod 17, and the position of the support frame 18 on the fixing rod 17 can be flexibly adjusted to adapt to the support and fixation of different structural templates; a first bolt 21 is horizontally arranged on the back rib 4, one end of the diagonal brace 7 is hinged to the cross bar 19, and the other end is hinged to the first bolt 21; one end of the first brace 8 is supported on the fixing rod 17, and the other end is supported at the bottom of the back rib 4; the length of the diagonal brace 7 and the first brace 8 is adjustable to adapt to the support and fixation of templates at different distances.

[0046] For further information, see Figure 8 The limiting screw 5 can prevent the top of the template from deforming or exploding, and other abnormalities. The limiting screw 5 includes a limiting block 22 in the middle and a screw 23 fixedly connected to the limiting block 22. Both ends of the screw 23 pass through the back rib 4 and are locked and fixed by a nut 14. The length of the limiting block 22 is equal to the width of the protective wall to be cast, which can ensure that the upper and lower spacings of the template are the same, thereby ensuring the verticality of the protective wall.

[0047] Furthermore, an L-shaped template 24 is provided on the side of the first template 1 away from the limiting reinforcement tooling 6, and the upper and lower ends of the L-shaped template 24 are respectively connected to the sub-template 3; the L-shaped template 24 is provided with a tongue and groove at the connection with the sub-template 3; a horizontal connecting block 25 is provided on the back of the L-shaped template 24, and the two ends of the connecting block 25 are respectively fixedly connected to the back ribs 4 on the upper and lower sides.

[0048] A three-wall formwork system, see Figures 9 to 12, including the high-speed railway protective wall formwork described above, wherein the protective wall is provided with a B wall on the side away from the limiting reinforcement tooling 6, and second templates 26 are provided on both sides of the B wall, and a sealing plate 2 is provided at the end of the second template 26, and the second template 26 includes a plurality of spliced ​​sub-templates 3; a second support rod 27 is provided between the protective wall and the B wall, and one end of the second support rod 27 is supported on the back rib 4, and the other end is supported on the second template 26; a limiting tooling 32 is provided on the upper end of the second template 26, and the limiting tooling 32 can not only prevent the second template 26 from deforming or exploding, but also prevent the second template 26 from floating abnormally; the limiting tooling 32 includes a limiting cross bar 33 and L-shaped clamping blocks 34 arranged on the limiting cross bar 33 and symmetrically arranged, and the spacing of the clamping blocks 34 is Equal to the spacing of the second templates 26 on both sides of the B wall; screw rods are provided at both ends of the limiting cross bar 33, and conical foot pads 35 are threadedly connected to the screw rods. The conical foot pads 35 at both ends of the limiting cross bar 33 are respectively supported on the A wall and the back rib 4, and the accuracy of the upper mouth of the second template 26 is adjusted by adjusting the telescopic distance of the conical foot pads 35 to ensure the verticality of the wall; the second support rod 27 and the limiting tooling 32 connect the protective wall formwork and the formwork of the B wall as a whole, which not only ensures the required design spacing between the formworks, but also has higher overall structural strength, can effectively avoid deformation and dislocation of the formwork, and make the structural dimensions of the protective wall and the B wall meet the requirements; the entire formwork system has a simple structure and sufficient limiting support, which is suitable for aluminum alloy formworks. Aluminum alloy formworks make the formworks more lightweight and modular, and the disassembly and assembly efficiency of the formworks is significantly improved.

[0049] For further information, see Fig.11 A telescopic beam clamp 28 is arranged above the second template 26. The beam clamp 28 can prevent the top of the second template 26 from deforming or exploding; the beam clamp 28 includes a telescopic tube 29 and clamp arms 30 arranged at both ends of the telescopic tube 29. The beam clamp 28 is a telescopic structure that can adapt to the pouring construction of different B wall thicknesses; the length of the clamp arm 30 is slightly smaller than the height of the second template 26, ensuring that the clamp arm 30 can clamp the side of the second template 26 to the maximum extent, thereby improving the rigidity of the entire formwork.

[0050] Furthermore, a vertical limiting rod 31 is provided on the back of the second formwork 26, and the lower end of the limiting rod 31 is fixed on the concrete table surface. The second formwork 26 is stuck in the limiting rod 31 to prevent abnormal release such as mold explosion; in addition, the spacing of the limiting rods 31 is equal to the spacing of the second formworks 26 on both sides of the B wall, so that the accuracy of the second formwork 26 is effectively improved.

[0051] Working principle of the present invention:

[0052] First, the pouring construction of wall A is completed on the beam-making pedestal. Then, after the final tensioning of the prestressed steel strands is completed and the grouting strength of the prestressed pipes reaches the designed strength, the pouring construction of wall B and the protective wall is carried out. Before the pouring construction of wall B and the protective wall, the formwork system is first constructed. The sub-forms 3 are first used to splice the first formwork 1 and the second formwork 26 of the required size, and then they are locked and fixed. The first formwork 1 is placed at the pouring position of the protective wall. The side of the first formwork 1 is supported by the diagonal support rod 7, and the side of the bottom is supported by the first support rod 8. The second formwork 26 is placed in the middle of the pre-buried limit rod 31, and the bottom of the second formwork 26 is aligned with the first formwork. The bottom of the first template 1 is supported by the second support rod 27; the lengths of the first support rod 8 and the second support rod 27 are adjusted to make the positions of the first template 1 and the second template 26 correct and the supporting force meet the design requirements; then the limiting screw 5 is installed on the top of the first template 1 to make the spacing at the top of the first template 1 consistent with the design value, and at the same time, the beam clamp 28 is fixed to the top of the second template 26 to make the spacing of the second template 26 meet the design requirements; then the limiting tool 32 is installed above the second template 26, and the two ends of the limiting tool 32 are respectively supported on the back ribs of the A wall and the protective wall; finally, after the installation is completed, the protective wall and the B wall are poured.

[0053] After pouring is completed, the first formwork 1 and the second formwork 26 do not need to be disassembled. Only the supporting and limiting structures such as the diagonal support rod 7, the first support rod 8, the second support rod 27 and the limiting tool 32 need to be removed, and then the formwork can be moved as a whole to the next pouring unit; then refer to the previous step to complete the support and limitation of the formwork, and carry out the pouring operation in sequence.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-speed railway protective wall formwork, characterized in that: The invention comprises a first template (1) arranged on both sides of the protective wall and a sealing plate (2) arranged at the end of the protective wall, wherein the first template (1) comprises a plurality of spliced ​​sub-templates (3), and a plurality of back ribs (4) are vertically arranged on the back of the sub-templates (3); a plurality of limit screws (5) are horizontally spanned on the upper end of the first template (1), and the two ends of the limit screws (5) are respectively fixedly connected to the upper ends of the back ribs (4); a limit reinforcement tool (6) is arranged in parallel on one side of the first template (1), and a telescopic diagonal support rod (7) is hinged on the limit reinforcement tool (6), and the other end of the diagonal support rod (7) is inclined upward and hinged to the back rib (4); a telescopic first support rod (8) is arranged between the limit reinforcement tool (6) and the back rib (4).

2. A high-speed railway protective wall formwork as claimed in claim 1, characterized in that: The upper / lower end surfaces of the sub-template (3) are provided with mushroom-shaped sealing grooves (9); the upper and lower end surfaces of the sub-template (3) are provided with tongues and grooves, the tongues and grooves comprising a protrusion (10) provided on the upper / lower end surfaces of the sub-template (3) and a groove (11) provided on the lower / upper end surfaces of the sub-template (3), the size of the groove (11) being slightly larger than the protrusion (10).

3. A high-speed railway protective wall formwork as claimed in claim 1, characterized in that: The back of the sub-template (3) is provided with a plurality of vertical T-shaped slots (12), and T-shaped bolts (13) are slidably arranged in the T-shaped slots (12); the threaded ends of the T-shaped bolts (13) pass through the back ribs (4) and are locked and fixed by nuts (14); the upper and lower ends of the sub-template (3) are respectively provided with longitudinal connection holes (15), and the left and right ends of the sub-template (3) are respectively provided with transverse connection holes (16).

4. A high-speed railway protective wall formwork as claimed in claim 1, characterized in that: The position limiting reinforcement tooling (6) comprises a long strip-shaped fixing rod (17) and a support frame (18) arranged on the fixing rod (17); the cross section of the fixing rod (17) is groove-shaped, and the support frame (18) is arranged in the groove of the fixing rod (17); the support frame (18) comprises a cross bar (19) and fixing blocks (20) arranged at both ends of the cross bar (19); the cross bar (19) is parallel to the length direction of the fixing rod (17), and the width of the fixing block (20) is equal to the groove width of the fixing rod (17); a first bolt (21) is transversely arranged on the back rib (4); one end of the diagonal brace (7) is hinged to the cross bar (19), and the other end is hinged to the first bolt (21); one end of the first brace (8) is supported on the fixing rod (17), and the other end is supported at the bottom of the back rib (4).

5. A high-speed railway protective wall formwork as claimed in claim 1, characterized in that: The limiting screw rod (5) comprises a limiting block (22) in the middle and screw rods (23) fixedly connected to the two ends of the limiting block (22); the screw rods (23) respectively pass through the back ribs (4) and are locked and fixed by a nut (14); the length of the limiting block (22) is equal to the width of the protective wall to be cast plus the thickness of the templates on both sides.

6. A high-speed railway protective wall formwork as claimed in claim 2, characterized in that: The first template (1) is provided with an L-shaped template (24) on a side away from the limiting reinforcement tooling (6), and the upper and lower ends of the L-shaped template (24) are respectively connected to the sub-templates (3); the L-shaped template (24) is provided with a tongue and groove at the connection with the sub-template (3); the back of the L-shaped template (24) is provided with a transverse connecting block (25), and the two ends of the connecting block (25) are respectively fixedly connected to the back ribs (4) on the upper and lower sides.

7. A three-wall formwork system, characterized in that: The high-speed railway protective wall formwork comprises the formwork according to any one of claims 1 to 6, wherein the protective wall is provided with a B wall on the side away from the limiting reinforcement tooling (6), and second templates (26) are provided on both sides of the B wall, and the ends of the second template (26) are provided with closing plates (2), and the second template (26) includes a plurality of spliced ​​sub-templates (3); a second support rod (27) is provided between the protective wall and the B wall, and one end of the second support rod (27) is supported on the back rib (4), and the other end is supported on the second template (26).

8. A three-wall formwork system as claimed in claim 7, characterized in that: A telescopic beam clamp (28) is arranged above the second template (26), and the beam clamp (28) comprises a telescopic tube (29) and clamp arms (30) arranged at both ends of the telescopic tube (29), and the length of the clamp arms (30) is slightly greater than the height of the second template (26).

9. A three-wall formwork system as claimed in claim 7, characterized in that: A vertical limiting rod (31) is provided on the back of the second template (26), and the lower end of the limiting rod (31) is fixed on the concrete table surface.

10. A three-wall formwork system according to claim 7, characterized in that: A limiting tool (32) is arranged at the upper end of the second template (26), and the limiting tool (32) includes a limiting cross bar (33) and L-shaped clamping blocks (34) arranged on the limiting cross bar (33) and symmetrically arranged, and the spacing of the clamping blocks (34) is equal to the spacing of the second templates (26) on both sides of the B wall; screw rods are arranged at both ends of the limiting cross bar (33), and conical foot pads (35) are threadedly connected to the screw rods, and the conical foot pads (35) at both ends of the limiting cross bar (33) are supported on the A wall and the back rib (4) respectively.

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