CN211973148U - Prestressed pipeline positioning device and main cable strand anchoring system - Google Patents

Abstract

The utility model relates to the technical field of building construction, in particular to a prestressed pipeline positioning device and a main cable strand anchoring system. The prestressed pipeline positioning device includes a base frame and a positioning bracket. The lower end of the base frame is provided with at least two jacks at intervals. It is hinged with the lower end of the base frame; the positioning bracket is fixedly connected with the base frame, and the positioning bracket is used for positioning and fixing the prestressed pipeline. In the present invention, at least two jacks are arranged, and the at least two jacks are arranged at intervals, and by adjusting the lifting distance of the two jacks respectively, the inclination angle of the base frame can be easily adjusted, and the fixing in the positioning bracket can be further adjusted. The inclination angle of the prestressed pipeline is adjusted to ensure that the axial direction, spatial position and verticality of the anchor surface of the steel strand in the prestressed pipeline meet the design requirements.

Description

Prestressed pipeline positioning device and main cable strand anchoring system

technical field

The utility model relates to the technical field of building construction, in particular to a prestressed pipeline positioning device and a main cable strand anchoring system.

Background technique

At present, the installation of prestressed pipes is carried out at the same time as the concrete pouring of the anchorage base. In order to prevent the dislocation of the prestressed pipes during the pouring of the anchorage base concrete, the axial direction, spatial position and the verticality of the anchor surface of the steel strand strands are guaranteed. In line with the design requirements, brackets are usually used to fix the prestressed pipes on the brackets. However, the existing brackets are processed according to the expected size. After arriving at the construction site, the frame body may be cut or welded due to processing errors. Installation and adjustment are inconvenient, construction speed is slow, steel consumption is high, and construction period is long.

Utility model content

The first objective of the present utility model is to provide a prestressed pipeline positioning device, so as to alleviate the technical problems of inconvenient installation and adjustment and long construction period caused by the need to cut or repair the support in the prior art.

The second purpose of the present invention is to provide a main cable strand anchoring system to alleviate the technical problems of inconvenient installation and adjustment and long construction period caused by the need to cut or repair the support in the prior art.

Based on the above-mentioned first objective, the present invention provides a prestressed pipeline positioning device, comprising a base frame and a positioning bracket, the lower end of the base frame is provided with at least two jacks at intervals, and one end of the jacks is used for connecting with the anchor block. The pre-embedded steel plate in the first layer of concrete is fixedly connected, and the other end of the jack is used for hinged connection with the lower end of the base frame; the positioning bracket is fixedly connected with the base frame, and the positioning bracket is used for prestressing Pipes are positioned and secured.

Further, in some optional embodiments, the jack is detachably connected to the embedded steel plate;

The prestressed pipeline positioning device further includes a support, one end of the support is fixedly connected to the embedded steel plate, and the other end of the support is fixedly connected to the lower end of the base frame.

Further, in some optional embodiments, the support is a steel pipe, one end of the steel pipe is welded with the embedded steel plate, and the other end of the steel pipe is welded with the lower end of the base frame.

Further, in some optional embodiments, the base frame includes a first base frame and a second base frame, the positioning support includes a first positioning support and a second positioning support, and the first positioning support is installed On the first base frame, the first positioning bracket is provided with a plurality of first installation positions; the second positioning bracket is installed on the second base frame, and the second positioning bracket is provided with a plurality of first installation positions In the second installation position, the first base frame is spaced apart from the second base frame, and the second base frame is located obliquely above the first base frame, so that the first base frame is fixedly mounted on the corresponding first base frame. The included angle between the axis of the prestressed pipe in the installation position and the second installation position and the upper surface of the first layer of concrete of the anchor block is a set angle.

Further, in some optional embodiments, the first base frame and the second base frame each include a plurality of frame bodies, and the frame bodies include a first vertical rod, a second vertical rod, a parallel connection and diagonal bracing, the first vertical rod and the second vertical rod are arranged in parallel and spaced apart, and the length of the second vertical rod is greater than the length of the first vertical rod, and the lower end of the first vertical rod and the The lower ends of the second vertical rods are respectively hinged with one of the jacks; one end of the parallel connection is fixedly connected with the upper end of the first vertical rod, and the other end of the parallel connection is fixedly connected with the second vertical rod, And the length direction of the parallel connection is perpendicular to the length direction of the first vertical rod; one end of the diagonal bracing is fixedly connected with the upper end of the first vertical rod, and the other end of the diagonal bracing is connected to the second vertical rod. The upper end of the vertical rod is fixedly connected;

A plurality of the frame bodies are arranged at intervals, so that a plurality of the diagonal braces are arranged in parallel and at intervals.

Further, in some optional embodiments, the first positioning bracket includes a plurality of first rectangular frames, and the plurality of the first rectangular frames are along the plurality of the frame bodies of the first base frame. The arrangement directions are arranged at intervals, and a plurality of first positioning rods are arranged between two adjacent first rectangular frames, and the plurality of first positioning rods are arranged at intervals along the length direction of the first rectangular frames, and each The position of the first positioning rod corresponds to one of the first installation positions, and the prestressed pipe is used for fixed connection with the first positioning rod.

Further, in some optional embodiments, the first positioning rod is provided with a connecting plate, and the connecting plate is provided with an arc-shaped groove matched with the outer wall of the prestressed pipe, the prestressed pipe For welding with the connecting plate.

Further, in some optional embodiments, the second positioning bracket includes a plurality of second rectangular frames, and the plurality of the second rectangular frames are along the arrangement direction of the plurality of frame bodies of the second base frame spaced arrangement, a plurality of second positioning rods are arranged between two adjacent second rectangular frames, and a plurality of the positioning rods are arranged at intervals along the length direction of the second rectangular frames, each of the second positioning rods The position of the rod corresponds to one of the second installation positions, and the prestressed pipe is used for fixed connection with the second positioning rod.

Further, in some optional embodiments, a splicing positioning member is provided on the outer side of the positioning bracket.

Based on the above second objective, the present invention also provides a main cable strand anchoring system, including the prestressed pipeline positioning device.

Compared with the prior art, the beneficial effects of the present utility model mainly include:

The prestressed pipeline positioning device provided by the utility model comprises a base frame and a positioning bracket, the lower end of the base frame is provided with at least two jacks at intervals, and one end of the jacks is used for pre-embedding in the first layer of concrete with the anchor block The steel plate is fixedly connected, and the other end of the jack is used for hinged connection with the lower end of the base frame; the positioning bracket is fixedly connected with the base frame, and the positioning bracket is used for positioning and fixing the prestressed pipe.

Based on this structure, in the prestressed pipeline positioning device provided by the present invention, at least two jacks are provided, and the at least two jacks are arranged at intervals, and by adjusting the lifting distance of the two jacks respectively, the inclination of the base frame can be facilitated The angle can be adjusted, and then the inclination angle of the prestressed pipeline fixed in the positioning bracket can be adjusted, so as to ensure that the axial direction, spatial position and verticality of the anchor surface of the steel strand in the prestressed pipeline meet the design requirements. When in use, one end of the jack is fixedly connected to the pre-embedded steel plate in the first layer of concrete of the anchor block, the other end of the jack is hinged to the lower end of the base frame, and the lifting distance of the two jacks is adjusted respectively to make the prestressed The inclination angle of the pipe is the set angle. During the adjustment process, there is no need to cut or repair the base frame, which shortens the construction period.

The main cable strand anchoring system provided by the utility model uses the prestressed pipe positioning device provided by the present utility model, without cutting or repairing the base frame, the inclination angle of the base frame can be quickly adjusted, and the The inclination angle of the prestressed pipeline fixed in the positioning bracket is adjusted to ensure that the axial direction, spatial position and verticality of the anchor surface of the steel strand in the prestressed pipeline meet the design requirements and shorten the construction period.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the following descriptions The accompanying drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic front view of a prestressed pipeline positioning device provided in Embodiment 1 of the present utility model;

FIG. 2 is a schematic top-view structure diagram of the prestressed pipeline positioning device provided in the first embodiment of the present invention;

Fig. 3 is the partial enlarged view of D place in Fig. 1;

4 is a schematic structural diagram of a frame body in the prestressed pipeline positioning device provided in Embodiment 1 of the present invention;

5 is a cross-sectional view along line A-A of FIG. 4;

6 is a schematic front view of the structure of the first positioning bracket in the prestressed pipeline positioning device provided in the first embodiment of the present invention;

7 is a cross-sectional view along line B-B of FIG. 6;

8 is a cross-sectional view along line C-C of FIG. 6;

9 is a schematic diagram of the first positioning rod and the prestressed pipeline being fixed together in the prestressed pipeline positioning device provided in the first embodiment of the present utility model;

FIG. 10 is a schematic diagram of splicing together two first positioning brackets in the prestressed pipeline positioning device provided in the first embodiment of the present invention.

Icons: 100-back anchor surface; 200-front anchor surface; 300-first layer concrete of anchor block; 400-prestressed pipe; 500-main cable centerline; 101-first base frame; 102-second base frame; 103-first positioning bracket; 104-second positioning bracket; 105-jack; 106-first vertical rod; 107-second vertical rod; connecting rod; 112-second connecting rod; 113-long side; 114-short side; 115-cross brace; 116-oblique rod; 117-first positioning rod; 118-connecting plate; 119-splicing positioning piece; 120-first rectangular frame; 121-second rectangular frame; 122-pre-embedded steel plate; 123-hinged shaft.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

1 to 10, this embodiment provides a prestressed pipeline positioning device, including a base frame and a positioning bracket, the lower end of the base frame is provided with at least two jacks 105 at intervals, and one end of the jack 105 is used for connecting with the anchor The pre-embedded steel plate 122 in the first layer of concrete 300 is fixedly connected, the other end of the jack 105 is used for hinged connection with the lower end of the base frame; the positioning bracket is fixedly connected with the base frame, and the positioning bracket is used for positioning and fixing the prestressed pipe 400 .

Based on this structure, in the prestressed pipeline positioning device provided in this embodiment, at least two jacks 105 are provided, and the at least two jacks 105 are arranged at intervals, and the lifting distance of the two jacks 105 can be adjusted respectively, which can facilitate the alignment of the base The inclination angle of the frame can be adjusted, and then the inclination angle of the prestressed pipeline fixed in the positioning bracket can be adjusted, so as to ensure that the axial direction, spatial position and verticality of the anchor surface of the steel strand in the prestressed pipeline conform to the design. Require. In use, one end of the jack 105 is fixedly connected to the embedded steel plate 122 in the first layer of concrete 300 of the anchor block, the other end of the jack 105 is hinged to the lower end of the base frame, and the lifting distance of the two jacks 105 is adjusted respectively, Make the inclination angle of the prestressed pipe a set angle. During the adjustment process, there is no need to cut or repair the base frame, which shortens the construction period.

Further, in some optional embodiments, the jack 105 is detachably connected to the embedded steel plate 122; the prestressed pipeline positioning device further includes a support, one end of the support is fixedly connected to the embedded steel plate 122, and the other end of the support is fixedly connected to the embedded steel plate 122. One end is fixedly connected with the lower end of the base frame.

After the angle is adjusted, the position of the jack 105 is replaced by a support, one end of the support is fixedly connected to the embedded steel plate, and the other end of the support is fixedly connected to the lower end of the base frame, and then the jack 105 is taken out, and it can be used in the future. use.

Further, in some optional embodiments, the support is a steel pipe, one end of the steel pipe is welded with the embedded steel plate, and the other end of the steel pipe is welded with the lower end of the base frame.

It should be noted that the jack 105 may also be welded with the embedded steel plate 122 . Since the jack 105 is easy to operate and relatively low in cost, it can also be used once. After the construction is completed, the jack 105 is fixed in the anchoring base concrete.

If the jack 105 is welded with the embedded steel plate 122 , by arranging the steel pipe, the phenomenon that the position of the base frame is changed due to the failure of the jack 105 can be avoided.

Further, in some optional embodiments, as shown in FIG. 1 , the base frame includes a first base frame 101 and a second base frame 102 , and the positioning support includes a first positioning support 103 and a second positioning support 104 . A positioning bracket 103 is installed on the first base frame 101, and the first positioning bracket 103 is provided with a plurality of first installation positions; the second positioning bracket 104 is installed on the second base frame 102, and the second positioning bracket 104 is provided with a plurality of first installation positions. In the second installation position, the first base frame 101 and the second base frame 102 are spaced apart, and the second base frame 102 is located obliquely above the first base frame 101, so that the fixed frame can be mounted on the corresponding first installation position and the second installation position The included angle α between the axis of the prestressed pipe in position and the upper surface of the first layer of concrete 300 of the anchor block is a set angle. The first base frame 101 is fixedly connected to the embedded steel plate in the first layer of concrete 300 of the anchor block through the jack 105 .

The key to the positioning and installation of the first base frame 101 and the second base frame 102 is to control the positions of the top surfaces thereof, so as to facilitate the precise installation of the first positioning bracket 103 and the second positioning bracket 104 . Specifically, the first positioning bracket 103 is welded to the top end of the first base frame 101 , and the second positioning bracket 104 is welded to the top end of the second base frame 102 . The size of the included angle between the axis of the prestressed pipe and the upper surface of the first layer of concrete 300 of the anchor block is related to the angle between the center line 500 of the main cable and the upper surface of the first layer of concrete 300 of the anchor block. The angle between 500 and the upper surface of the first layer concrete 300 of the anchor block is determined according to construction requirements.

Further, in some optional embodiments, each of the first base frame 101 and the second base frame 102 includes a plurality of frame bodies, and the frame bodies include a first vertical rod 106 , a second vertical rod 107 , a parallel connection 108 and The diagonal brace 109, the first vertical rod 106 and the second vertical rod 107 are arranged in parallel and spaced apart, and the length of the second vertical rod 107 is greater than the length of the first vertical rod 106. Referring to FIG. 3, the lower end of the first vertical rod 106 and The lower ends of the second vertical rods 107 are respectively hinged with a jack 105 through the hinge shaft 123; one end of the parallel link 108 is fixedly connected with the upper end of the first vertical rod 106, and the other end of the parallel link 108 is fixedly connected with the second vertical rod 107, and The length direction of the parallel link 108 is perpendicular to the length direction of the first vertical rod 106; one end of the diagonal brace 109 is fixedly connected with the upper end of the first vertical rod 106, and the other end of the diagonal bracing 109 is fixedly connected with the upper end of the second vertical rod 107; The plurality of frame bodies are arranged at intervals, so that the plurality of diagonal braces 109 are arranged in parallel and at intervals.

In this embodiment, as shown in FIG. 4 and FIG. 5 , one end of the parallel link 108 is welded with the upper end of the first vertical rod 106 , the other end of the parallel link 108 is welded with the second vertical rod 107 , and the length direction of the parallel link 108 is welded. It is perpendicular to the length direction of the first vertical rod 106; one end of the diagonal brace 109 is welded with the upper end of the first vertical rod 106, and the other end of the diagonal bracing 109 is welded with the upper end of the second vertical rod 107; The plurality of diagonal braces 109 are arranged in parallel and spaced apart, wherein the plurality of frame bodies are welded together by the first connecting rods 111 to form an integral structure.

For the anchoring and precise positioning of the base frame, when the first layer of concrete 300 of the anchor block is poured, points are placed at the positions of the first vertical rod 106 and the second vertical rod 107 and steel plates are embedded. After the first layer of concrete 300 of the anchor block is poured, the positions of the first vertical rod 106 and the second vertical rod 107 are accurately set out on the embedded steel plate 122, and the jack 105, the first vertical rod 106, and the second vertical rod are installed in sequence. 107 and Pinglian 108. Adjust the jacking distance of the jack 105 to check whether the top surfaces of the first base frame 101 and the second base frame 102 are correct, mainly by using the three-dimensional coordinate method of the existing total station to ensure that the top surface elevation and slope angle of the base frame are consistent with the precision requirements.

Further, in some optional embodiments, as shown in FIG. 2 , the first positioning bracket 103 includes a plurality of first rectangular frames 120 , and the plurality of first rectangular frames 120 are along a plurality of frames of the first base frame 101 . The arrangement direction of the body is spaced apart, and a plurality of first positioning rods 117 are arranged between two adjacent first rectangular frames 120, and the plurality of first positioning rods 117 are arranged at intervals along the length direction of the first rectangular frame 120. The position of a positioning rod 117 corresponds to a first installation position, and the prestressed pipe is used for fixed connection with the first positioning rod 117 .

In this embodiment, both ends of the plurality of first rectangular frames 120 in the longitudinal direction are welded together by the second connecting rods 112 respectively to form an integral structure.

Referring to FIG. 6 , the first rectangular frame 120 is provided with cross braces 115 and inclined rods 116 , two ends of the cross brace 115 are welded to the two long sides 113 of the first rectangular frame 120 respectively, and the The short sides 114 of the rectangular frame 120 are parallel; the number of inclined rods 116 is two, and one end of one inclined rod 116 is connected to the long side 113 of the first rectangular frame 120 away from the rear anchor surface 100 and the connection of the inclined rod 116 Welding, the other end of the oblique rod 116 is welded with the end of the first rectangular frame 120 close to the long side 113 of the rear anchor surface 100; The connection between the long side 113 and the inclined rod 116 is welded, and the other end of the other inclined rod 116 is welded with the other end of the long side 113 of the first rectangular frame 120 close to the rear anchor surface 100 .

Referring to FIGS. 7 and 8 , a plurality of first positioning rods 117 are arranged at intervals along the length direction of the first rectangular frame 120 , and the first positioning rods 117 are connected to two adjacent lengths of two adjacent first rectangular frames. Side welding. The position of the first positioning rod 117 is determined according to the construction requirements. Before the first positioning rod 117 is installed, the center coordinates of the prestressed pipes laid on each section are calculated and set out between the first positions after the installation is completed. Three three-dimensional coordinate points are obtained, and the relative distances between the three points and the first positioning rod 117 are given, according to which the first positioning rod 117 can be basically adjusted in place.

Further, in some optional embodiments, the first positioning rod 117 is provided with a connecting plate 118, and the connecting plate 118 is provided with an arc-shaped groove matched with the outer wall of the prestressed pipe 400, and the prestressed pipe 400 is used for connecting with the prestressed pipe 400. The connecting plate 118 is welded.

Usually, the distance between the position of the first positioning rod 117 and the position of the bottom surface of the prestressed pipe in the direction of the inclined angle is about 3 cm, which is used for placing the connecting plate 118 to facilitate precise positioning of the prestressed pipe. The connecting plate 118 may not be placed when the first positioning bracket 103 is installed, and is welded and connected to the first positioning rod 117 and the prestressed pipe after precise adjustment when installing the prestressed pipe. Please refer to FIG. 9 for the state after welding.

In some optional embodiments, the second positioning bracket 104 includes a plurality of second rectangular frames 121 , and the plurality of second rectangular frames 121 are arranged at intervals along the arrangement direction of the plurality of frame bodies of the second base frame 102 , adjacent to each other. A plurality of second positioning rods are arranged between the two second rectangular frames 121, and the plurality of positioning rods are arranged at intervals along the length direction of the second rectangular frames 121, and the position of each second positioning rod corresponds to a second installation position. The stress pipe is used for fixed connection with the second positioning rod.

It should be noted that the structure of the second positioning bracket 104 is substantially the same as that of the first positioning bracket 103 , and the specific size of the second rectangular frame 121 and the setting position of the second positioning rod need to be designed according to construction requirements.

In some optional embodiments, the outer side of the positioning bracket is provided with a splicing positioning member 119 .

The positioning bracket is a steel structure and is a key component for the positioning of the prestressed pipeline, so it has strict requirements on its structural size. Optionally, as shown in FIG. 10 , the first rectangular frame 120 in this embodiment is formed by welding a square tube, the splicing positioning member 119 is an angle steel, and the outer wall at the outer end of the positioning bracket to be lengthened is welded. Four angle steels, for example, four angle steels are welded to the four corners of the two outermost first rectangular frames 120 , or two corners of the outermost two first rectangular frames 120 that are far from the first base frame 101 are welded. , so that after the previous first positioning bracket 103 is assembled and positioned, the rear first positioning bracket 103 can be directly aligned and overlapped on the previous first positioning bracket 103, which saves the time for adjusting the position and improves the work efficiency.

After the positioning bracket is installed, the prestressed pipeline can be installed. Optionally, the prestressed pipeline is installed and extended in two sections. When the first section of the prestressed pipeline is installed, the central axis of the anchor point is set out on the back anchor surface 100 template, and then the anchor plate is installed and inspected according to the axis accuracy. The pipes are sleeved in the notch of the rear anchor surface 100 and placed on the corresponding arc-shaped grooves of the two connecting plates 118 . The centerline of the anchor point is positioned, and after passing the inspection, the prestressed pipe 400 and the connecting plate 118 are welded.

Optionally, the first vertical rod 106 and the second vertical rod 107 in this embodiment are made of double-joint 25b channel steel, and the flat joint 108 and the diagonal brace 109 are made of double-joint No. 10 channel steel; the first rectangular frame 120 and the long side 113 of the second rectangular frame 121 are made of 25b channel steel, the short side 114, the cross brace 115 and the inclined rod 116 are made of double-joint No. 10 channel steel, the first positioning rod 117 and the second positioning rod All use No. 10 channel steel. The first base frame 101 and the first positioning bracket 103 are connected by the section steel 110 , and the second base frame 102 and the second positioning bracket 104 are also connected by the section steel 110 .

It should be noted that the first vertical rod 106 , the second vertical rod 107 , the parallel connection 108 and the diagonal brace 109 , the first rectangular frame 120 , the second rectangular frame 121 and the section steel 110 may also adopt the channel steel of other section steel 110 or other Steel structural parts.

Embodiment 2

This embodiment provides a main cable strand anchoring system, including the prestressed pipeline positioning device provided in the first embodiment of the present invention.

The main cable strand anchoring system provided in this embodiment uses the prestressed pipe positioning device provided in Embodiment 1 of the present utility model, and can quickly adjust the inclination angle of the base frame without cutting or repairing the base frame. Furthermore, the inclination angle of the prestressed pipeline fixed in the positioning bracket can be adjusted, so as to ensure that the axial direction, spatial position and verticality of the anchor surface of the steel strand in the prestressed pipeline meet the design requirements and shorten the construction period.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (10)

1. A prestressed pipeline positioning device, characterized in that it comprises a base frame and a positioning bracket, the lower end of the base frame is provided with at least two jacks at intervals, and one end of the jacks is used for connecting with the anchor block in the first layer of concrete. The pre-embedded steel plate is fixedly connected, and the other end of the jack is used for hinged connection with the lower end of the base frame; the positioning bracket is fixedly connected with the base frame, and the positioning bracket is used for positioning and fixing the prestressed pipeline. . 2. The prestressed pipeline positioning device according to claim 1, wherein the jack is detachably connected to the embedded steel plate; The prestressed pipeline positioning device further includes a support, one end of the support is fixedly connected to the embedded steel plate, and the other end of the support is fixedly connected to the lower end of the base frame. 3 . The prestressed pipeline positioning device according to claim 2 , wherein the support member is a steel pipe, one end of the steel pipe is welded with the embedded steel plate, and the other end of the steel pipe is connected with the base frame. 4 . the lower end of the welding. 4. The prestressed pipeline positioning device according to any one of claims 1 to 3, wherein the base frame comprises a first base frame and a second base frame, and the positioning support comprises a first positioning support and a second base frame. A second positioning bracket, the first positioning bracket is installed on the first base frame, and the first positioning bracket is provided with a plurality of first installation positions; the second positioning bracket is installed on the second base frame The second positioning bracket is provided with a plurality of second installation positions, the first base frame and the second base frame are arranged at intervals, and the second base frame is located obliquely above the first base frame , so that the angle between the axis of the prestressed pipeline fixedly erected in the corresponding first installation position and the second installation position and the upper surface of the first layer of concrete of the anchor block is the set angle. 5 . The prestressed pipeline positioning device according to claim 4 , wherein the first base frame and the second base frame each comprise a plurality of frame bodies, and the frame bodies comprise a first vertical rod, a second Two vertical rods, parallel joints and diagonal braces, the first vertical rod and the second vertical rod are arranged in parallel and spaced apart, and the length of the second vertical rod is greater than the length of the first vertical rod, and the first vertical rod The lower end of the vertical rod and the lower end of the second vertical rod are respectively hinged with one of the jacks; one end of the parallel connection is fixedly connected with the upper end of the first vertical rod, and the other end of the parallel connection is connected to the Two vertical rods are fixedly connected, and the length direction of the parallel connection is perpendicular to the length direction of the first vertical rod; one end of the diagonal brace is fixedly connected to the upper end of the first vertical rod, and the other side of the diagonal bracing is fixedly connected. one end is fixedly connected with the upper end of the second vertical rod; A plurality of the frame bodies are arranged at intervals, so that a plurality of the diagonal braces are arranged in parallel and at intervals. 6 . The prestressed pipe positioning device according to claim 5 , wherein the first positioning bracket comprises a plurality of first rectangular frames, and the plurality of the first rectangular frames are along the plurality of the first base frames. 7 . The racks are arranged at intervals in the arrangement direction, and a plurality of first positioning rods are arranged between two adjacent first rectangular frames, and the plurality of first positioning rods are along the length direction of the first rectangular frames. The positions of each of the first positioning rods correspond to one of the first installation positions, and the prestressed pipes are used to be fixedly connected with the first positioning rods. 7 . The prestressed pipeline positioning device according to claim 6 , wherein the first positioning rod is provided with a connecting plate, and the connecting plate is provided with an arc-shaped groove matched with the outer wall of the prestressed pipeline. 8 . , the prestressed pipeline is used for welding with the connecting plate. 8 . The prestressed pipe positioning device according to claim 5 , wherein the second positioning bracket comprises a plurality of second rectangular frames, and the plurality of the second rectangular frames are along the plurality of the second base frames. 9 . The arrangement directions of the individual racks are arranged at intervals, and a plurality of second positioning rods are arranged between two adjacent second rectangular frames, and the plurality of positioning rods are arranged at intervals along the length direction of the second rectangular frames, each The positions of each of the second positioning rods correspond to one of the second installation positions, and the prestressed pipe is used to be fixedly connected with the second positioning rods. 9 . The prestressed pipeline positioning device according to claim 1 , wherein a splicing positioning member is provided on the outer side of the positioning bracket. 10 . 10. A main cable strand anchoring system, characterized in that it comprises a prestressed pipe positioning device as claimed in any one of claims 1 to 9.

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