CN106480823B - Vaulted beam device and its localization method - Google Patents

Abstract

The invention relates to the technical field of bridge construction, in particular to an arch foot positioning device and a positioning method thereof. Including: base and support plate; the support plate is set on the base, the angle between the support plate and the horizontal plane is equal to the angle between the rod and the horizontal plane of the embedded section of the arch foot, and the support plate is used for the embedded section of the arch foot; The base is used to be fixed on the reserved notch of the abutment. The arch foot positioning device and its positioning method provided by the present invention set the support plate on the base so that the inclination angle of the support plate is the same as the inclination angle of the bars of the arch foot pre-embedded section. When the construction personnel install the embedded section of the arch foot, first install the base and the support plate on the reserved slot, and then place the embedded section of the arch foot on the support plate and perform positioning, which reduces the difficulty of positioning and construction , reducing the construction cost.

Description

Arch foot positioning device and its positioning method

technical field

The invention relates to the technical field of bridge construction, in particular to an arch foot positioning device and a positioning method thereof.

Background technique

The steel structure of the pre-buried section of the arch foot of the steel truss arch bridge is embedded in the concrete of the abutment. The construction methods generally include the following: 1. A stiff skeleton is erected during the construction of the abutment foundation, and the steel truss arch is directly adjusted and fixed before pouring Concrete; 2. Reserve the corresponding notches during the construction of the abutment foundation, and then set up a stiff skeleton platform to adjust the pre-buried section of the arch foot and then pour the notch concrete. Due to the particularity of bridge design, the three-dimensional axis of the arch foot pre-embedded section has certain angles in the top view plane, side view plane and front view plane. It is difficult to use a rigid skeleton for positioning, and the construction is difficult, which increases the construction cost. .

Contents of the invention

The object of the present invention is to provide an arch foot positioning device and a positioning method thereof, so as to solve the technical problems existing in the prior art that it is difficult to use a rigid frame for positioning, the construction is difficult, and the construction cost is increased.

An arch foot positioning device provided by the present invention comprises: a base and a support plate; the support plate is arranged on the base, and the angle between the support plate and the horizontal plane is equal to the angle between the bar of the arch foot pre-buried section and the horizontal plane , the support plate is used for the embedded section of the arch foot; the base is used for fixing on the reserved notch of the abutment.

Further, the arch foot positioning device also includes an adjusting steel sheet; the adjusting steel sheet is arranged on the supporting plate for adjusting the position of the embedded section of the arch foot.

Further, the arch foot positioning device also includes a pre-embedded steel plate on the bottom surface; two installation planes are arranged at intervals on the side wall below which the reserved notch is located, and there is a height difference between the two installation planes; There are pre-embedded steel plates on the bottom; each bottom pre-embedded steel plate is provided with a base.

Further, the arch foot positioning device also includes anchoring steel bars; anchoring steel bars are arranged on each installation plane on the abutment; one end of the anchoring steel bar is buried in the abutment, and the other end is fixedly connected with the embedded steel plate on the bottom surface.

Further, the arch foot positioning device also includes an inclined-plane pre-embedded steel plate; the groove bottom surface of the reserved notch is perpendicular to the bar of the arch foot, and the inclined-plane embedded steel plate is pre-embedded in the groove bottom surface of the reserved notch, which is used for pre-embedding with the arch foot. The rods of the buried section are fixedly connected.

Further, the arch foot positioning device also includes a pre-embedded anchor ring; the pre-embedded anchor ring is provided on the side wall of the reserved notch perpendicular to the installation plane.

Further, the arch foot positioning device also includes a jack; the jack is placed on the installation plane, and is used to support the embedded section of the arch foot at a preset position.

Furthermore, the arch foot positioning device also includes a chain hoist and a hoist; the chain hoist is installed in the embedded anchor ring, and one end of the chain hoist is connected to the rod of the embedded section of the arch foot, and the other end is connected to the hoist.

The present invention also provides a method for positioning the arch foot, which specifically includes the following steps:

According to the preset position information of the embedded section of the arch foot, draw the three-dimensional structure diagram of the base and the support plate;

Process the base and support plate according to the three-dimensional structure drawing, and weld the support plate on the base;

According to the preset position information of the pre-embedded section of the arch foot, a pre-embedded notch is made on the abutment, and the pre-embedded steel plate on the bottom surface and the pre-embedded steel plate on the slope are buried on the pre-embedded notch;

Weld the base to the pre-embedded steel plate on the bottom surface, and place the arch foot on the support plate;

Use jacks and hoisting to adjust the accuracy of the arch feet, and weld the arch feet to the support plate and the pre-embedded steel plate on the slope.

Further, the step of adjusting the accuracy of the arch foot by using a jack and hoisting, and welding the arch foot on the support plate and the pre-embedded steel plate on the slope, specifically includes the following steps:

Use jacks and hoisting to place the embedded section of the arch foot on the support plate;

Compare the three-dimensional coordinates of the current position of the embedded section of the arch foot with the three-dimensional coordinates of the preset position of the embedded section of the arch foot;

When the three-dimensional coordinates of the current position of the pre-buried section of the arch foot deviate from the three-dimensional coordinates of the preset position and are outside the specification value, the position of the pre-buried section of the arch foot is adjusted by adjusting the steel sheet;

When the three-dimensional coordinates of the current position of the embedded section of the arch foot deviate from the three-dimensional coordinates of the preset position within the specification value, the adjusting steel sheet is welded on the support plate, and the embedded section of the arch foot is welded on the adjusting steel sheet and the inclined plane Embedded on the steel plate.

The arch foot positioning device and its positioning method provided by the present invention set the support plate on the base so that the inclination angle of the support plate is the same as the inclination angle of the bars of the arch foot pre-buried section. When the construction personnel install the embedded section of the arch foot, first install the base and the support plate on the reserved slot, and then place the embedded section of the arch foot on the support plate and perform positioning, which reduces the difficulty of positioning and construction , reducing the construction cost.

Description of drawings

In order to more clearly illustrate the specific implementation 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 specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Fig. 1 is the use status diagram of the arch foot positioning device provided by the embodiment of the present invention;

Fig. 2 is a schematic structural view of the base and the support plate of the arch foot positioning device provided by the embodiment of the present invention;

Fig. 3 is the flow chart of the method for locating the arch foot provided by one embodiment of the present invention;

Fig. 4 is the flow chart of the method for locating the arch foot provided by another embodiment of the present invention;

Fig. 5 is a general flow chart of the arch foot positioning method provided by the embodiment of the present invention.

Reference signs:

1-base; 2-anchor reinforcement; 3-reserved notch;

4-arch seat; 5-arch foot embedded section; 6-embedded anchor ring;

7-bottom embedded steel plate; 8-bevel embedded steel plate; 11-support plate;

12-fixed plate; 13-branch plate; 14-reinforcing plate.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Fig. 1 is a view of the use state of the arch foot positioning device provided by the embodiment of the present invention; Fig. 2 is a structural schematic diagram of the base and the support plate of the arch foot positioning device provided by the embodiment of the present invention. As shown in Figure 1 and Figure 2, a kind of arch foot positioning device provided by this embodiment includes: a base 1 and a support plate 11; the support plate 11 is arranged on the base 1, and the angle between the support plate 11 and the horizontal plane The included angles between the bars of the pre-embedded foot section 5 and the horizontal plane are equal, and the support plate 11 is used for the embedded section 5 of the arch foot; the base 1 is used to be fixed on the reserved notch 3 of the abutment 4 .

Wherein, the structural form of the base 1 can be various, for example: the base 1 includes a fixed plate 12, a reinforcing plate 14 and a plurality of support plates 13, and a plurality of support plates 11 are sequentially arranged on the fixed plate 12 at intervals, and more The heights of the support plates 13 are successively increased, and a reinforcement plate 14 is arranged between each support plate 13 and the fixing plate 12 , and the support plates 13 are arranged on the upper ends of the plurality of support plates 13 .

The shape of the support plate 11 can be various, for example: rectangle, square or circle and so on.

The number of support plates 11 can be one or multiple, and the inclination angles of a plurality of support plates 11 can be the same or different. , to determine the inclination angle of each support plate 11.

The connection between the support plate 11 and the base 1 can be in various ways, for example: clamping, screwing or welding, etc., preferably welding.

The arch foot positioning device provided in this embodiment sets the support plate 11 on the base 1 so that the inclination angle of the support plate 11 is the same as the inclination angle of the bar of the arch foot embedded section 5 . When the construction personnel install the embedded arch foot section 5, they first install the base 1 and the support plate 11 on the reserved notch 3, and then place the embedded arch foot section 5 on the support plate 11 and perform positioning. The positioning difficulty and construction difficulty are reduced, and the construction cost is reduced.

As shown in Fig. 1 and Fig. 2, on the basis of the above-mentioned embodiment, further, the arch foot positioning device further includes an adjusting steel sheet; the adjusting steel sheet is arranged on the support plate 11 for adjusting Location.

Wherein, the shape of the adjusting steel sheet can be various, for example: rectangle or square etc., also can be cuboid or wedge-shaped block and so on.

There can be one or more adjusting steel sheets, and those skilled in the art can select an appropriate number of adjusting steel sheets according to the needs of adjustment to adjust the embedded section 5 of the arch foot.

When the construction personnel install the base 1 on the reserved notch 3 before installing the arch foot embedded section 5, and then place the arch foot embedded section 5 on the support plate 11, at this time, the arch foot embedded section 5 The three-dimensional coordinates of the current position are compared with the three-dimensional coordinates of the preset position of the embedded arch foot section 5 (that is, the position of the embedded arch foot section 5 in the design drawing). If the current position of the arch foot embedded section 5 deviates from its preset position, install the adjusting steel sheet on the support plate 11 to realize precise positioning of the arch foot embedded section 5, and then place the arch foot embedded section 5 and adjusting steel sheets are welded on the support plate 11 in turn to fix the embedded section 5 of the arch foot so as to facilitate subsequent work.

In this embodiment, before installing the pre-buried section 5 of the arch foot, the base 1 and the support plate 11 are made in advance according to the preset position information of the embedded section 5 of the arch foot, and then the pre-fabricated base 1 and the support plate are placed 11 is installed in the reserved notch 3. In this way, when the construction personnel install the pre-embedded section 5 of the arch foot, they place the pre-embedded section 5 of the arch foot on the support plate 11, and only need to adjust the steel sheet and make slight adjustments to position the pre-embedded section 5 of the arch foot. , It is convenient for construction personnel to construct and shorten the construction period.

As shown in Figure 1, on the basis of the above embodiment, further, the arch foot positioning device also includes a bottom embedded steel plate 7; two installation planes are arranged at intervals on the side wall below which the reserved notch 3 is located, and the two There is a height difference between the two installation planes; each installation plane is provided with a bottom embedded steel plate 7; each bottom embedded steel plate 7 is provided with a base 1.

There are two installation planes arranged at intervals on the lower side wall of the reserved notch 3, and there is a height difference between the two installation planes, which matches the inclination angle of the arch foot embedded section 5 , and a bottom embedded steel plate 7 is buried on each installation plane. In this way, a base 1 is welded on each bottom pre-embedded steel plate 7, and at least one support plate 11 is welded on each base 1, thereby more stably supporting the pre-embedded section 5 of the arch foot. The precise positioning of segment 5 raises the base.

As shown in Figure 1, on the basis of the above-mentioned embodiment, further, the arch foot positioning device also includes an anchoring steel bar 2; on the abutment 4, at each installation plane, an anchoring steel bar 2 is provided; the anchoring steel bar 2 One end is buried in the abutment 4, and the other end is fixedly connected with the pre-embedded steel plate 7 on the bottom surface.

Among them, there are various ways to connect the bottom pre-embedded steel plate 7 and the anchoring steel bar 2, for example: welding, bolt or screw connection, etc., preferably welding.

In this embodiment, anchoring steel bars 2 are pre-embedded at each installation plane, and the bottom pre-embedded steel plates 7 are welded together, thereby increasing the stability of the connection between the bottom pre-embedded steel plates 7 and the abutment 4 .

As shown in Figure 1, on the basis of the above-mentioned embodiment, further, the arch foot positioning device also includes an inclined plane embedded steel plate 8; Embedded in the groove bottom of the reserved notch 3, it is used for fixed connection with the rod of the embedded section 5 of the arch foot.

In this embodiment, the inclined-plane pre-embedded steel plate 8 is buried on the groove bottom surface of the reserved notch 3. After the positioning of the arch-foot embedded section 5 is completed, the arch-foot embedded section 5 can be welded to the inclined-plane reserved steel plate. On the other hand, the pre-embedded section 5 of the arch foot can be more stable, which brings convenience to the subsequent construction.

As shown in Fig. 1, on the basis of the above embodiment, further, the arch foot positioning device further includes a pre-embedded anchor ring 6; the pre-embedded anchor ring 6 is provided on the side wall of the reserved notch 3 perpendicular to the installation plane.

Further, the arch foot positioning device also includes a jack; the jack is placed on the installation plane, and is used to support the arch foot embedded section 5 at a preset position.

Further, the arch foot positioning device also includes a chain hoist and a hoist; the chain hoist is inserted in the embedded anchor ring 6, one end of which is connected to the rod of the arch foot embedded section 5, and the other end is connected to the hoist.

When the construction personnel adjust the accuracy of the arch foot embedded section 5, they can use the jack to cooperate with the hoisting to adjust the angle of the arch foot embedded section 5, and then adjust the three-dimensional coordinates of the current position of the arch foot embedded section 5.

Fig. 3 is a flow chart of a method for positioning an arch foot provided by an embodiment of the present invention. As shown in Figure 3, this embodiment also provides a method for positioning the arch foot, which specifically includes the following steps:

Step 100, draw a three-dimensional structural diagram of the base 1 and the support plate 11 according to the preset position information of the arch foot embedded section 5;

Step 200, processing the base 1 and the support plate 11 according to the three-dimensional structure diagram, and welding the support plate 11 on the base 1;

Step 300, according to the preset position information of the pre-embedded section 5 of the arch foot, make a pre-embedded notch on the abutment 4, and bury the pre-embedded steel plate 7 on the bottom surface and the pre-embedded steel plate 8 on the inclined surface on the pre-embedded notch;

Step 400, welding the base 1 to the pre-embedded steel plate 7 on the bottom surface, and placing the arch foot on the support plate 11;

Step 500 , use a jack and hoist to adjust the accuracy of the arch foot, and weld the arch foot to the support plate 11 and the pre-embedded steel plate 8 on the slope.

Wherein, the preset position information of the embedded arch foot section 5 includes at least the three-dimensional coordinates of the embedded arch foot section 5 and the position of the embedded arch foot section 5 relative to other structures, such as the position relative to the abutment 4 and so on.

In this embodiment, according to the preset position information of the arch foot embedded section 5, the three-dimensional structure diagram of the base 1 and the support plate 11 is drawn, and the base 1 and the support plate 11 are produced according to the three-dimensional structure diagram, so that the base can be 1 and the support plate 11 can be more in line with the inclination angle of the arch foot embedded section 5, thereby reducing the workload for construction personnel to adjust the position of the arch foot embedded section 5. After the construction personnel place the pre-embedded section 5 of the arch foot on the support plate 11, it is only necessary to make slight adjustments to the pre-embedded section 5 of the arch foot.

Fig. 4 is a flow chart of an arch foot positioning method provided by another embodiment of the present invention; Fig. 5 is a general flow chart of an arch foot positioning method provided by an embodiment of the present invention. As shown in Fig. 4 and Fig. 5, on the basis of the above-mentioned embodiment, step 500 is to use a jack and hoist to adjust the accuracy of the arch foot, and weld the arch foot to the support plate 11 and the inclined embedded steel plate 8 , including the following steps:

Step 501, using a jack and hoisting to place the arch foot embedded section 5 on the support plate 11;

Step 502, comparing the three-dimensional coordinates of the current position of the pre-buried section 5 of the arch foot with the three-dimensional coordinates of the preset position of the embedded section 5 of the arch foot;

Step 503, when the three-dimensional coordinates of the current position of the arch foot pre-buried section 5 deviates from the three-dimensional coordinates of its preset position outside the standard value, adjust the position of the arch foot embedded section 5 by adjusting the steel sheet;

Step 504, when the deviation between the three-dimensional coordinates of the current position of the arch foot pre-buried section 5 and the three-dimensional coordinates of its preset position is within the specification value, the adjusting steel sheet is welded on the support plate 11, and the arch foot embedded section 5 is welded On the adjustment steel sheet and the inclined plane embedded steel plate 8.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for 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 technical solutions of the various embodiments of the present invention. scope.

Claims (8)

1. A kind of 1. vaulted beam device, it is characterised in that including：Base and supporting plate；The supporting plate is arranged on the base On, the angle between the supporting plate and horizontal plane between angle and the rod member and horizontal plane of arch springing embedded section is equal, the branch Fagging is used for arch springing embedded section, and the base is used for the reserved notch for being fixed on skewback；

   Also include regulation steel disc；

   The regulation steel disc is arranged in the supporting plate, for adjusting the position of the arch springing embedded section；

   Also include inclined-plane pre-embedded steel slab；

   The groove bottom of the reserved notch is vertical with the rod member of arch springing, and the inclined-plane pre-embedded steel slab is embedded in the reserved notch Groove bottom, for being fixedly connected with the rod member of the arch springing embedded section.
2. 2. vaulted beam device according to claim 1, it is characterised in that also including bottom surface pre-embedded steel slab；It is described reserved Two mounting planes are arranged at intervals with the underlying side wall of notch, and there is difference in height between two mounting planes；Each Bottom surface pre-embedded steel slab is provided with the mounting plane；A base is provided with each bottom surface pre-embedded steel slab.
3. 3. vaulted beam device according to claim 2, it is characterised in that also including anchor bar；

   On the skewback, at each mounting plane, anchor bar is provided with；Bury one end of the anchor bar In the skewback, the other end is fixedly connected with the bottom surface pre-embedded steel slab.
4. 4. according to the vaulted beam device described in claim 2-3 any one, it is characterised in that also including pre-buried anchor ring；Institute State and the pre-buried anchor ring is provided with the reserved notch side wall vertical with the mounting plane.
5. 5. vaulted beam device according to claim 4, it is characterised in that also including jack；The jack is placed On mounting plane, for arch springing embedded section to be supported on into predeterminated position.
6. 6. vaulted beam device according to claim 4, it is characterised in that also including chain block and lifting；The chain Bar cucurbit is located in the pre-buried anchor ring, and its one end is connected with the rod member of the arch springing embedded section, the other end and the lifting Connection.
7. A kind of 7. vaulted beam method, it is characterised in that specifically include following steps：

   According to the preset position information of arch springing embedded section, base and the three-dimensional structural map of supporting plate are drawn；

   According to three-dimensional structural map processing base and supporting plate, and supporting plate is welded on base；

   According to the preset position information of arch springing embedded section, pre-buried notch is made on skewback, and by bottom surface pre-embedded steel slab and inclined-plane Pre-embedded steel slab is embedded on pre-buried notch；

   By tube chamber welds with base on the pre-embedded steel slab of bottom surface, and arch springing is placed on the supporting plate；

   Precision regulation is carried out to arch springing using jack and lifting, and arch springing is welded in supporting plate and inclined-plane pre-embedded steel slab.
8. 8. vaulted beam method according to claim 7, it is characterised in that described to be entered using jack and lifting to arch springing Row precision is adjusted, and arch springing is welded in the step in supporting plate and inclined-plane pre-embedded steel slab, is specifically comprised the following steps：

   Arch springing embedded section is placed on the supporting plate using jack and lifting；

   The three-dimensional coordinate of the three-dimensional coordinate of arch springing embedded section current location and arch springing embedded section predeterminated position is contrasted；

   When the three-dimensional coordinate of the current location of arch springing embedded section and the three-dimensional coordinate of its predeterminated position have deviation outside normal value When, utilize the position for adjusting steel disc regulation arch springing embedded section；

   When the three-dimensional coordinate of the current location of arch springing embedded section and the three-dimensional coordinate of its predeterminated position have deviation in normal value When, by the welding of regulation steel disc on the supporting plate, arch springing embedded section is welded on regulation steel disc and inclined-plane pre-embedded steel slab.