Three-pipe concrete structure inverted siphon construction joint copper sheet waterstop fixing device

Abstract

The application discloses a copper sheet water stop belt fixing device for a three-pipe-one-connection concrete structure inverted siphon construction joint, which comprises a circular arc steel plate, one side of which is connected with an inner mold trolley integrally, and the other side of which extends into a copper sheet water stop nose; the circular arc steel plate is provided with a first steel wing plate and a second steel wing plate which are both fixed perpendicularly on the same side of the circular arc steel plate, the first steel wing plate is in close contact with the copper sheet water stop, and the second steel wing plate is arranged flush with the top surface of the inner mold trolley; a rectangular connecting plate is connected with the circular arc steel plate and the first steel wing plate and the second steel wing plate integrally; and a triangular connecting plate is connected with the second steel wing plate and the circular arc steel plate integrally. The copper sheet water stop fixing device is simple to install, high in installation precision and reusable, reduces the demand for workers, saves materials such as square timber and formwork, improves construction efficiency, shortens the process circulation time, and effectively solves the problem that the copper sheet water stop is difficult to control in the installation and pouring process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction. More particularly, the present application relates to a copper sheet water stop fixing device for construction joints of three-pipe one-association concrete structure inverted siphon. BACKGROUND

[0002] The copper sheet water stop is arranged at the construction joint of each pipe of the three-pipe one-association concrete structure inverted siphon, that is, there are three circular copper sheet water stops at each construction joint, and the installation of the copper sheet water stop of the inverted siphon structure has large engineering quantity and high installation standard. The traditional end mold copper sheet water stop band is fixed by using formwork square wood, and it is difficult to fix the arc-shaped copper sheet water stop, and unqualified rework often occurs, which has problems of high maintenance cost, great difficulty and influence on construction period. SUMMARY

[0003] An object of the present application is to provide a copper sheet water stop fixing device for construction joints of three-pipe one-association concrete structure inverted siphon, which is simple to install, has high installation precision, is a whole steel member, can be reused, reduces the demand for workers, saves materials such as square wood and formwork, improves construction efficiency, shortens the process cycle time, and effectively solves the problem of difficult control of the deviation of the copper sheet water stop during installation and pouring.

[0004] In order to achieve these objects and other advantages according to the present application, a copper sheet water stop fixing device for construction joints of three-pipe one-association concrete structure inverted siphon is provided, which comprises:

[0005] An arc-shaped steel plate is connected to an inner mold trolley on one side, and the other side of the arc-shaped steel plate extends to the inside of the copper sheet water stop nose;

[0006] Arc-shaped steel wing plates are vertically fixed on the same side of the arc-shaped steel plate, the first steel wing plate is in close contact with the copper sheet water stop, and the second steel wing plate is flush with the top surface of the inner mold trolley;

[0007] A rectangular connecting plate is connected to the arc-shaped steel plate, the first steel wing plate and the second steel wing plate;

[0008] A triangular connecting plate is connected to the second steel wing plate on one leg, and connected to the arc-shaped steel plate on the other leg, and the rectangular connecting plate and the triangular connecting plate cover the outer side of the arc-shaped steel plate.

[0009] Preferably, the arc-shaped steel plate and the inner mold trolley are connected by bolts, and the arc-shaped steel plate, the arc-shaped steel wing plate, the rectangular connecting plate and the triangular connecting plate of the fixing device are fixed by welding.

[0010] Preferably, bolt holes are arranged on the rectangular connecting plate to connect adjacent fixing devices as a whole.

[0011] Preferably, the end steel formwork tightly abuts against the copper sheet water stop nose.

[0012] Preferably, the construction steps of the copper sheet water stop fixing device are as follows:

[0013] Step one, steel trolley measurement and line laying; through measurement and line laying, the center line of the inner formwork trolley is determined, and the inner formwork trolley is fixed;

[0014] Step two, copper sheet water stop installation; according to the center line of the inner formwork trolley and the related coordinate points, the copper sheet water stop fixing device is installed, one side of the arc steel plate of a unit fixing device is bolted together with the inner formwork trolley, and different units of the fixing device are connected into a whole through the bolt holes of the rectangular connecting plate; after the fixing device is installed, the copper sheet water stop can be installed, and during the installation of the copper sheet water stop, the copper sheet water stop nose is clamped into the other side of the arc steel plate, and the copper sheet water stop is placed on the first steel wing plate.

[0015] Step three, end steel formwork installation; after the copper sheet water stop is installed, the whole end steel formwork can be installed, the end steel formwork is reinforced by the outer formwork trolley and the steel reinforcement framework, and the end formwork near the copper sheet water stop tightly abuts against the copper sheet water stop nose, and cooperates with the fixing device to control the movement range of the copper sheet water stop;

[0016] Step four, structure pouring; after the end steel formwork is installed and reinforced, the structure pouring can be carried out, and one cycle of structure pouring is completed.

[0017] Preferably, during the installation and construction process of the copper sheet water stop fixing device, the method for improving the one-time acceptance qualified rate of the copper sheet water stop installation includes the following points:

[0018] Method one, setting up a temporary fixing tool, fixing the copper sheet water stop welding joint first, and then welding the copper sheet water stop;

[0019] Method two, first, before the installation of the copper sheet water stop, a circular arc steel reinforcement framework of corresponding size is made, and is welded and positioned firmly according to the design section of the copper sheet water stop, so as to form a circular arc plane with the end steel formwork; secondly, the copper sheet water stop is installed on the circular arc plane formed by the self-made circular arc steel reinforcement framework and the end steel formwork, and then another self-made circular arc steel reinforcement framework is installed above the copper sheet water stop, and the copper sheet water stop is fixed firmly, and forms a clamp with the lower layer of self-made circular arc steel reinforcement framework to firmly limit the vertical deviation of the copper sheet water stop;

[0020] Method three, installing a steel support frame at the end wall formwork, so that the end steel formwork controls its movement range under the push-pull action of the pull rod steel reinforcement and the support frame, and prevents the copper sheet water stop from deviating during installation and pouring.

[0021] Preferably, the temporary fixing device in the method comprises a fixing base, a fixing ring and a fixing bolt, the fixing base is fixedly arranged and recessed from one side to form a gap, the top surface of the fixing base is provided with a plurality of fixing rings with internal threads, and a plurality of fixing bolts are correspondingly matched in the fixing rings and arranged towards the gap.

[0022] The present application at least includes the following advantages:

[0023] (1) The copper sheet water stop fixing device fully plays the functions of the end steel formwork and the inner mold trolley, and indirectly controls the activity range of the copper sheet water stop by forming the copper sheet water stop, the inner mold trolley frame and the end steel formwork as a whole through the fixing device, thereby effectively preventing the copper sheet water stop from being deviated during installation and pouring.

[0024] (2) The copper sheet water stop fixing device is simple to install and has high installation precision, and the whole is a steel member, which can be repeatedly used, thereby not only reducing the demand for operating personnel, saving materials such as timber and formwork, but also improving construction efficiency and shortening the process cycle time, and effectively solving the problem that the copper sheet water stop is difficult to control during installation and pouring.

[0025] Other advantages, objects and features of the present application will be partly embodied in the following description, and partly understood by those skilled in the art through research and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural diagram of the fixing device of the present application;

[0027] Figure 2 It is a top view of the temporary fixing device;

[0028] Figure 3 It is a structural diagram of the steel bar support frame installed at the middle wall end mold of the present application.

[0029] REFERENCE SIGNS:

[0030] 1, arc steel plate, 11, bolt, 2, arc steel wing plate, 21, first steel wing plate, 22, second steel wing plate, 3, rectangular connecting plate, 31, bolt hole, 4, triangular connecting plate, 5, inner mold trolley, 6, copper sheet water stop, 7, end steel formwork, 8, fixing base, 9, fixing ring, 10, fixing bolt, 12, gap, 13, steel bar support frame, 14, welded joint. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description.

[0032] It should be noted that the experimental methods described in the following embodiments are conventional methods, and the reagents and materials are commercially available unless otherwise specified. In the description of the present application, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] As shown in Figure 1 The present application provides a copper sheet water stop fixing device for three-pipe-one-connection concrete structure inverted siphon construction joint, comprising: a circular arc steel plate 1, one side of which is connected with an inner mold trolley 5 as a whole, the other side of the circular arc steel plate 1 extends to just reach the inside of the nose of a copper sheet water stop 6; a circular arc steel wing plate 2, which includes a first steel wing plate 21 and a second steel wing plate 22 and is vertically fixed on the same side of the circular arc steel plate 1, the first steel wing plate 21 is in close contact with the copper sheet water stop 6, and the second steel wing plate 22 is arranged flush with the top surface of the inner mold trolley 5; a rectangular connecting plate 3, which is connected with the circular arc steel plate 1, the first steel wing plate 21 and the second steel wing plate 22 as a whole; a triangular connecting plate 4, one of whose right angles is connected with the second steel wing plate 22 as a whole, and the other of whose right angles is connected with the circular arc steel plate 1 as a whole, and the rectangular connecting plate 3 and the triangular connecting plate 4 cover the outer side surface of the circular arc steel plate 1.

[0034] The circular arc steel plate 1 is connected with the inner mold trolley 5 through a bolt 11, and the circular arc steel plate 1, the circular arc steel wing plate 2, the rectangular connecting plate 3 and the triangular connecting plate 4 of the fixing device are all fixed through welding.

[0035] The rectangular connecting plate 3 is provided with a bolt hole 31 to connect adjacent fixing devices as a whole.

[0036] In the above technical scheme, the copper sheet water stop 6 fixing device is composed of a unit combination of a plurality of circular arc steel plates 1, a circular arc steel wing plate 2, a rectangular connecting plate 3 and a triangular connecting plate 4. One end of the circular arc steel plate 1 is connected to the inner mold trolley 5 through the bolt hole 31, and extends into the nose of the copper sheet water stop 6, so as to realize the installation precision of the copper sheet water stop 6. The circular arc steel wing plate 2 is vertically welded to the circular arc steel plate 1 by two steel plates, one first steel wing plate 21 is closely attached to the copper sheet water stop 6 to prevent the copper sheet water stop 6 from shifting left and right during installation or pouring. One second steel wing plate 22 is welded to the inner clearance section, one side is welded to the circular arc steel plate 1 through the rectangular connecting plate 3, and the other side is welded to the circular arc steel plate 1 through the triangular connecting plate 4, to prevent the circular arc steel plate 1 from deforming due to stress during pouring of concrete. The bottom of the rectangular connecting plate 3 is welded to the circular arc steel plate 1, and the two sides are welded to the circular arc steel wing plate 2 as a whole. At the same time, the adjacent units of the fixing device are connected into a whole through the bolt hole 31. The right angle edges of the triangular connecting plate 4 are welded to the second steel wing plate 22 and the circular arc steel plate 1 as a whole.

[0037] In another technical scheme, the end steel formwork 7 tightly abuts against the nose of the copper sheet water stop 6. The end steel formwork 7 cooperates with the fixing device to control the movement range of the copper sheet water stop 6.

[0038] In another technical scheme, the construction steps of the copper sheet water stop 6 fixing device are as follows:

[0039] Step one, steel trolley measurement and line laying; through measurement and line laying, the center line of the inner mold trolley 5 is determined, and the inner mold trolley 5 is fixed;

[0040] Step two, installation of copper sheet water stop 6; according to the center line of the inner mold trolley 5 and the related coordinate points, the copper sheet water stop 6 fixing device is installed, one side of the circular arc steel plate 1 of one unit of the fixing device is connected to the inner mold trolley 5 through the bolt 11, and then the fixing devices of different units are connected into a whole through the bolt hole 31 of the rectangular connecting plate 3; after the installation of the fixing device is completed, the copper sheet water stop 6 can be installed, and during the installation of the copper sheet water stop 6, the nose of the copper sheet water stop 6 is clamped into the other side of the circular arc steel plate 1, and at the same time, one side of the copper sheet water stop 6 is placed on the first steel wing plate 21;

[0041] Step three, installation of end steel formwork 7; after the installation of the copper sheet water stop 6 is completed, the whole end steel formwork 7 can be installed, the end formwork 7 near the copper sheet water stop 6 side tightly abuts against the nose of the copper sheet water stop 6, and cooperates with the fixing device to control the movement range of the copper sheet water stop 6;

[0042] Step four, structure pouring; after the installation and reinforcement of the end steel formwork 7 are completed, the structure pouring can be carried out, and one cycle of structure pouring is completed.

[0043] In another technical solution, the method for improving the one-time acceptance qualification rate of copper sheet water stop installation during the installation and construction process of the copper sheet water stop fixing device includes the following points:

[0044] Method one, set up temporary fixing tools, fix the copper sheet water stop welding joint 14, and then weld the copper sheet water stop;

[0045] According to the situation of viewing the copper sheet water stop welding construction site, since the copper sheet water stop is curved into a circular arc shape according to the design section when it is installed in place, it has a tendency to expand outward. If there is no fixing measure when the copper sheet water stop joint is welded, the copper sheet water stop shape will be larger than when it is installed. According to the on-site welding construction situation, design temporary fixing tools, as shown in Figure 2 The temporary fixing tool includes a fixed seat 8, a fixed ring 9 and a fixed bolt 10. The fixed seat 8 is fixedly arranged and recessed from one side to form a notch 12. The top surface of the fixed seat 8 is provided with a plurality of fixed rings 9 with internal threads. A plurality of fixed bolts 10 are correspondingly matched in the fixed ring 9 and are arranged towards the notch 12. The welding joint 14 is fixed by using self-made tools and then welded. After the welding joint 14 is placed in the notch 12, the fixed bolt 10 is tightened against the welding joint 14 to achieve fixation. The welding joint 14 is a fixed steel plate. After the implementation of the countermeasure, the copper sheet water stop will not change in shape when it is welded due to the lack of structure.

[0046] Method two, for the "poor vertical positioning effect of copper sheet water stop", the following countermeasures are adopted:

[0047] Firstly, before the installation of the copper sheet water stop, a circular arc shaped steel reinforcement frame of corresponding size is made, and is welded and positioned firmly according to the design section of the copper sheet water stop, so as to form a circular arc plane with the end steel formwork;

[0048] Secondly, the copper sheet water stop is installed on the circular arc plane formed by the self-made circular arc shaped steel reinforcement frame and the end steel formwork, and then another self-made circular arc shaped steel reinforcement frame is installed above the copper sheet water stop, and the copper sheet water stop is fixed firmly to form a clamp with the lower layer of self-made circular arc shaped steel reinforcement frame to firmly restrict the vertical deviation of the copper sheet water stop;

[0049] After the implementation of the countermeasure, the copper sheet water stop will not change in shape during the construction process.

[0050] Method three, for "improper formwork reinforcement", the following countermeasures are adopted:

[0051] Since the Xiazhuang inverted siphon is the only "three-pipe-one-connection" type concrete structure in China, the end steel formwork is different from the tunnel or other similar structures. The middle wall area between the middle pipe and the side pipe of the Xiazhuang inverted siphon is between two copper sheet water stops. The end steel formwork has no fixed fulcrum. If the traditional reinforcement method, i.e. the fixed method of pull rod and steel pipe, is used, the formwork will slightly shift during the construction process after reinforcement. The copper sheet water stop will also move at the same time. The installation position of the copper sheet water stop of the Xiazhuang inverted siphon is required to be high (5 mm). A slight displacement of the end steel formwork will cause the copper sheet water stop position to not meet the requirements. Therefore, the team discussed and researched to change the inverted siphon end formwork to steel formwork and decided to install a steel reinforcement support frame 13 at the middle wall end formwork of the Xiazhuang inverted siphon, as shown in Figure 3 The end steel formwork is controlled in the range of activity under the push and pull action of the pull rod reinforcement and the steel reinforcement support frame 13 to prevent the copper sheet water stop from being deviated during the installation and pouring process.

[0052] Through the above three methods, the one-time acceptance qualified rate of the copper sheet water stop of the inverted siphon is increased from 81.8% to 95%, which achieves the set target.

[0053] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present application. Additional modifications can be easily realized by those skilled in the art. Therefore, the present application is not limited to the specific details and the figures shown and described herein without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A copper sheet waterstop fixing device for construction joint of three-pipe one-association concrete structure inverted siphon, characterized in that, include: An arc-shaped steel plate, one side of which is integrated with the inner mold trolley, and the other side of the arc-shaped steel plate extends to just inside the copper sheet water-stop nose; The arc-shaped steel wing plate includes a first steel wing plate and a second steel wing plate, both of which are vertically fixed on the same side of the arc-shaped steel plate. The first steel wing plate is in close contact with the copper sheet for water stop, and the second steel wing plate is flush with the top surface of the inner mold trolley. A rectangular connecting plate is integrally connected to the arc steel plate, the first steel wing plate, and the second steel wing plate; the rectangular connecting plate is provided with bolt holes to connect adjacent fixing devices into a whole; A triangular connecting plate, one right-angled side of which is integrally connected to the second steel wing plate, and the other right-angled side of which is integrally connected to the arc steel plate, and the rectangular connecting plate and the triangular connecting plate cover the outer side of the arc steel plate; The steel template at the end is tightly pressed against the copper sheet water-stop nose.

2. The copper sheet waterstop fixing device for three-pipe-one-association concrete structure inverted siphon construction joint according to claim 1, characterized in that, The arc-shaped steel plate is connected to the inner mold trolley by bolts, and the arc-shaped steel plate, arc-shaped steel wing plate, rectangular connecting plate and triangular connecting plate of the fixing device are all fixed by welding.

3. The copper sheet waterstop fixing device for three-pipe-one-association concrete structure inverted siphon construction joint according to claim 1, characterized in that, The construction steps for the copper sheet waterstop fixing device are as follows: Step 1: Measure and lay out the steel reinforcement trolley; determine the centerline of the inner formwork trolley by measuring and laying out the lines, and fix the inner formwork trolley. Step 2: Copper sheet waterstop installation; Based on the centerline of the inner mold trolley and relevant coordinate points, install the copper sheet waterstop fixing device. One side of the arc steel plate of the fixing device of one unit is bolted to the inner mold trolley. Then, the fixing devices of different units are connected into a whole through the bolt holes of the rectangular connecting plate. After the fixing device is installed, the copper sheet waterstop can be installed. During the installation of the copper sheet waterstop, the copper sheet waterstop nose is inserted into the other side of the arc steel plate, and at the same time, one side of the copper sheet waterstop is placed flat on the first steel wing plate. Step 3: Installation of end steel formwork; After the copper sheet waterstop is installed, the overall end steel formwork can be installed. The end steel formwork is reinforced by the outer formwork trolley and the steel reinforcement cage. The end formwork on the side closest to the copper sheet waterstop tightly presses against the copper sheet waterstop nose, and works together with the fixing device to control the range of motion of the copper sheet waterstop. Step 4, structural pouring; after the end steel formwork is installed and reinforced, structural pouring can be carried out to complete one cycle of structural pouring.

4. The copper sheet waterstop fixing device for three-pipe-one-association concrete structure inverted siphon construction joint according to claim 3, characterized in that, The following are some methods to improve the first-time acceptance rate of copper sheet waterstop installation during the installation and construction of copper sheet waterstop fixing devices: Method 1: Set up temporary fixing equipment to fix the copper sheet waterstop welding joint before welding the copper sheet waterstop. Method 2: First, before installing the copper sheet waterstop, fabricate a circular arc-shaped steel reinforcement frame of the appropriate size and weld it firmly according to the design cross-section of the copper sheet waterstop, so that it forms a circular arc plane with the end steel template; second, install the copper sheet waterstop on the circular arc plane formed by the self-made circular arc-shaped steel reinforcement frame and the end steel template, and then install another self-made circular arc-shaped steel reinforcement frame above the copper sheet waterstop, and fix the copper sheet waterstop firmly, forming a clamp with the lower self-made circular arc-shaped steel reinforcement frame to firmly restrict the vertical displacement of the waterstop copper sheet; Method 3: Install a steel reinforcement support frame at the end formwork of the middle wall. This allows the steel formwork at the end to be controlled in its range of motion under the pushing and pulling action of the tie rod reinforcement and the support frame, preventing the copper sheet waterstop from shifting during installation and pouring.

5. The copper sheet waterstop fixing device for the construction joint of the inverted siphon of the three-pipe one-association concrete structure according to claim 4, characterized in that, The temporary fixing device for the machine tool in the method comprises a fixing base, a fixing ring and a fixing bolt, the fixing base is fixedly arranged and recessed from one side to form a gap, the top surface of the fixing base is provided with a plurality of fixing rings with internal threads, and a plurality of fixing bolts are correspondingly matched in the fixing rings and arranged towards the gap.

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