CN104762883B - A kind of coupling measuring method of slug matching precast bridge - Google Patents

Abstract

The invention discloses a matching measurement method for a prefabricated bridge by a short-line matching method, which includes the installation of a matching measurement system; after the matching beam section is in place, the design distance value between each matching measuring point of the matching beam section and the corresponding distance measuring instrument is input into a mobile device and the matching tolerance value; start the matching measurement program and the range finder, measure the actual distance between each range finder itself and the corresponding matching measuring point; guide the steps of matching measurement and adjusting the position of the matching beam segment. After adopting the above method, the range finder placed in the direction of the corresponding coordinate axis replaces the traditional total station and the level for matching measurement, and the mobile device is used to control the range finder through Bluetooth to measure the distance, calculate the matching data, and guide the matching process. Real-time under the control of mobile devices, can achieve the purpose of fast matching and improve matching efficiency.

Description

A Matching Measurement Method for Prefabricated Bridges Using Short Line Matching Method

technical field

The invention relates to an auxiliary measurement method in the pouring construction process of a prefabricated bridge, in particular to a matching measurement method for a prefabricated bridge using a short-line matching method.

Background technique

In bridge construction, it is necessary to divide a tens of meters long bridge into several sections of 3-5 meters long, that is, beam sections, which are continuously poured section by section, and then assembled. The method is called the short-line method.

In order to make the smooth connection of each beam section, the general construction sequence is: first pour a beam section as the foundation of the next section, called matching beam section, also known as matching beam section, after pouring is completed, hoist the matching beam section, and then place The new beam segment is moved to the position of the matching beam segment according to the design requirements, as the foundation of the next beam segment, and so on until the entire bridge is poured. Among them, the positioning process of moving the new beam segment to the position of the matching beam segment is called matching. It needs to repeatedly measure the position of the matching beam segment, guide the raising, lowering, and adjust the position and posture of the matching beam segment. The recent time-consuming process, during which the repeated measurement guides the work, that is, the matching measurement.

The current matching measurement method generally uses a total station and a level to repeatedly measure the three-dimensional coordinate position of the matching beam segment by manual operation to guide the matching process. This method has a low degree of automation. Measuring a measuring point requires lighting, aiming, reading, calculation and other processes, which takes a long time. Generally, there are at least 4-6 measuring points in one matching measurement. It takes about 3 minutes to measure each measuring point. The speed is very slow, affecting the construction period.

Contents of the invention

The technical problem to be solved in the present invention is to provide a matching measurement method for prefabricated bridges by the short-line matching method in view of the above-mentioned deficiencies in the prior art. The range meter replaces the traditional total station for matching measurement, and uses the mobile device to control the range finder through Bluetooth to measure the distance, calculate the matching data, and guide the matching process. The matching measurement is carried out in real time under the control of the mobile device, which can achieve fast matching and improve matching efficiency. Purpose.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A matching measuring method for a prefabricated bridge by a short-line matching method, comprising the following steps:

The first step is to match the beam segment in place;

The second step is the installation of the matching measurement system: the matching measurement system includes at least 6 rangefinders with built-in Bluetooth and a mobile device wirelessly connected to each Bluetooth;

Each rangefinder can measure the distance between itself and the corresponding matching measuring point;

The mobile device has a built-in matching measurement program, which includes the design distance value of each matching measuring point of the matching beam section that can be automatically imported or manually input, and receives the distance value provided by the corresponding distance meter through Bluetooth, and compares the distance value with the Compare the design distance value and calculate the deviation value to guide the matching beam segment to move according to the deviation value;

The at least 6 range finders are: at least 2 range finders in the X-axis direction for measuring the rotation and forward and backward movement of the matching beam segment, and at least 1 range finder in the Y-axis direction for measuring the left and right movement of the matching beam segment and at least 3 Z-axis direction rangefinders for measuring the up and down movement of the matching beam segment;

The arrangement of the range finders is as follows: at least three Z-axis range finders are arranged on the top of the matching beam segment position, and at least one Y-axis direction range finder is arranged on the left or right side of the matching beam segment position , at least two X-axis range finders are arranged on the front side or the rear side of the matching beam segment;

The third step is to input the design distance value and matching limit difference value between each matching measuring point of the matching beam section and the corresponding rangefinder in the mobile device;

The fourth step is to start the matching measurement program and all rangefinders in the mobile device. Each rangefinder will measure the actual distance value between itself and the corresponding matching measuring point, and send each actual distance value to Mobile devices;

In the fifth step, the matching measurement program will automatically calculate the deviation value between each matching measuring point of the matching beam segment and the design distance value according to each actual distance value received in the fourth step and the design distance value input in the third step; and guide the matching The beam segment moves according to the deviation value;

In the sixth step, when the deviation calculated by the matching measurement program is within the range of the matching limit, the matching is successful; otherwise, the fourth and fifth steps are repeated.

The matching measurement system includes 8 range finders with built-in Bluetooth, and the 8 range finders are: 4 range finders in the Z-axis direction, 2 range finders in the Y-axis direction and 2 range finders in the X-axis direction .

The matching measurement system also includes a total station.

In the fourth step, before each range finder is started, measure the initial position of the matching beam section with a total station, and input the initial position information into the mobile device, and then start the range finder and the mobile device The matching measurement program, the matching measurement program directly calculates the deviation value between the design distance value and the initial position information according to the input design distance value and initial position information, and guides the matching beam segment to move according to the deviation value.

Several matching measuring points are arranged on the matching beam section.

After the method is adopted in the present invention, the coordinate change of the measuring point can be matched through the distance change response. The range finder is placed in the direction of the three-dimensional coordinate axis of the matching beam segment adjustment. By detecting the distance change between the matching measuring point and the range finder, and converting it into coordinate values in various directions, it reflects the adjustment and approach and guides the matching. Since the rangefinder is equipped with a Bluetooth device, the distance measurement can be automatically controlled by the mobile device and the distance data can be returned, and the adjustment deviation of the matching beam section can be calculated at the same time. According to this principle, the present invention installs a rangefinder at the corresponding position of the matching measuring point of the matching beam section, and automatically controls the distance measuring of the rangefinder through the matching measurement program of the mobile device, detects the movement of the matching beam section in real time, calculates the deviation, and guides the matching process to achieve the purpose of fast matching.

Description of drawings

Fig. 1 has shown the schematic diagram that girder segment matching and pouring are completed in the present invention;

Fig. 2 shows a schematic diagram of beam segment matching measurement in the present invention.

Among them: 1. Matching beam section; 2. Fixed end form; 3. Beam section to be poured; 4. Matching measuring point; 5. The first Z-axis direction range finder; 6. The second Z-axis direction range finder; 7. The third Z-axis rangefinder; 8. The fourth Z-axis rangefinder; 9. The first Y-axis rangefinder; 10. The second Y-axis rangefinder; 11. The first X-axis A direction range finder; 12. A second X-axis direction range finder.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

A matching measurement system for a prefabricated bridge using a short-line matching method, comprising at least 6 range finders, a mobile device and a total station.

A number of matching measuring points are set on the matching beam section 1 as required. As shown in Figures 1 and 2, four matching measuring points 4 are set on the top of the matching beam section 1, namely matching measuring point A, matching measuring point B, matching measuring point C and matching measuring point D.

Each rangefinder has built-in Bluetooth, and each rangefinder is connected to a mobile device through Bluetooth, and can measure the distance between itself and the corresponding matching measuring point.

The number of range finders is preferably 8, and the 8 range finders are: 4 range finders in the Z-axis direction, 2 range finders in the Y-axis direction, and 2 range finders in the X-axis direction.

The 4 Z-axis range finders are preferably set up as shown in Figure 2. The 4 Z-axis range finders are in one-to-one correspondence with the 4 matching measuring points 4, and the 4 Z-axis range finders are jointly used to measure the matching beam. Up and down movement of segment 1.

The four Z-axis rangefinders are: the first Z-axis rangefinder 5, the second Z-axis rangefinder 6, the third Z-axis rangefinder 7, and the fourth Z-axis rangefinder 8 .

Among them, the first Z-axis direction rangefinder 5 corresponds to the matching measuring point A, the second Z-axis direction rangefinder 6 corresponds to the matching measuring point B, and the third Z-axis direction rangefinder 7 corresponds to the matching measuring point C Correspondingly, the fourth range finder 8 in the Z-axis direction corresponds to the matching measuring point D.

Alternatively, there may be only 3 or 5 or more rangefinders in the Z-axis direction.

Two Y-axis range finders, as shown in Figure 2, are respectively set on the left and right sides of the matching beam section 1, and are used to measure the left and right movement of the matching beam section 1 together. As an alternative, a Y-axis distance meter may also be provided only on the left or right side of the matching beam segment 1 .

The two Y-axis rangefinders are the first Y-axis rangefinder 9 and the second Y-axis rangefinder 10 .

Two distance measuring instruments in the X-axis direction, as shown in Figure 2, are preferably arranged on the front side of the matching beam section 1, that is, between the fixed end mold 2 and the matching beam section 1, and are jointly used to measure the matching beam section 1 rotation and forward and backward movement.

The two X-axis rangefinders are the first X-axis rangefinder 11 and the second X-axis rangefinder 12 respectively.

The above-mentioned mobile device has a built-in matching measurement program, which includes the design distance value of each matching measuring point of the matching beam section that can be automatically imported or manually input, and receives the distance value provided by the corresponding rangefinder through Bluetooth, and converts the distance The value is compared with the design distance value and the deviation value is calculated to guide the matching beam segment 1 to move according to the deviation value.

A matching measuring method for a prefabricated bridge by a short-line matching method, comprising the following steps:

In the first step, matching beam segment 1 is in place.

The second step is the installation of the matching measurement system: the above-mentioned 8 rangefinders are fixedly arranged according to the preferred setting method shown in Figure 2 above.

The third step is to input the design distance value and matching limit difference value between each matching measuring point of matching beam section 1 and the corresponding rangefinder in the mobile device.

When designing and inputting the matching limit value, it is preferable to set it according to the three coordinate axes of Z, Y and X. The value in the Z direction is called the height limit, and the value in the Y direction is called the Y axis limit. In the X direction is called the X axis tolerance.

The fourth step is to start the matching measurement program and all rangefinders in the mobile device. Each rangefinder will measure the actual distance value between itself and the corresponding matching measuring point, and send each actual distance value to the mobile device through Bluetooth. equipment.

In the fifth step, the matching measurement program will automatically calculate the deviation value between each matching measuring point of the matching beam segment and the design distance value according to each actual distance value received in the fourth step and the design distance value input in the third step; and guide the corresponding The rangefinder moves according to the offset value.

The rangefinder moves according to the offset value as follows:

1. The mobile device moves up and down by guiding the first Z-axis direction range finder 5, the second Z-axis direction range finder 6, the third Z-axis direction range finder 7, and the fourth Z-axis direction range finder 8 until Comply with the height tolerance requirements.

2. The mobile device guides the left and right movement of the first Y-axis rangefinder 9 and the second Y-axis rangefinder 10 until it meets the Y-axis tolerance requirement.

3. The mobile device guides the first X-axis rangefinder 11 and the second X-axis rangefinder 12 to rotate and move back and forth until it meets the X-axis tolerance requirement.

Preferably, in the fourth step, before each range finder is started, measure the initial position of the matching beam section 1 with a total station, and input the initial position information into the mobile device, and then start the range finder and move The matching measurement program in the equipment, the matching measurement program directly calculates the deviation value between the input design distance value and the initial position information, and guides the corresponding distance meter to move according to the deviation value.

In the sixth step, when the deviation calculated by the matching measurement program is within the range of the matching limit, the matching is successful; otherwise, the fourth and fifth steps are repeated.

After adopting the above method, the coordinate change of the measuring point can be matched by the distance change response. The range finder is placed in the direction of the three-dimensional coordinate axis of the matching beam segment adjustment. By detecting the distance change between the matching measuring point and the range finder, and converting it into coordinate values in various directions, it reflects the adjustment and approach and guides the matching. Since the rangefinder is equipped with a Bluetooth device, the distance measurement can be automatically controlled by the mobile device and the distance data can be returned, and the adjustment deviation of the matching beam section can be calculated at the same time. According to this principle, the present invention installs a rangefinder at the corresponding position of the matching measuring point of the matching beam section, and automatically controls the distance measuring of the rangefinder through the matching measurement program of the mobile device, detects the movement of the matching beam section in real time, calculates the deviation, and guides the matching process to achieve the purpose of fast matching.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be carried out to the technical solutions of the present invention. These equivalent transformations All belong to the protection scope of the present invention.

Claims (5)

1. a matching measuring method of a short-line matching method prefabricated bridge, is characterized in that: comprise the following steps: The first step is to match the beam segment in place; The second step is the installation of the matching measurement system: the matching measurement system includes at least 6 rangefinders with built-in Bluetooth and a mobile device wirelessly connected to each Bluetooth; ——Each range finder can measure the actual distance value between itself and the corresponding matching measuring point; ——The mobile device has a built-in matching measurement program, which includes the design distance value of each matching measuring point of the matching beam section that can be automatically imported or manually input, and receives the actual distance value provided by the corresponding distance meter through Bluetooth, and sends the The actual distance value is compared with the design distance value and the deviation value is calculated to guide the matching beam segment to move according to the deviation value; ——The at least 6 range finders are respectively: at least 2 range finders in the X-axis direction for measuring the rotation and forward and backward movement of the matching beam segment, and at least 1 distance measuring device in the Y-axis direction for measuring the left and right movement of the matching beam segment Tachymeter and at least 3 Z-axis direction distance meters for measuring the up and down movement of the matching beam section; ——The arrangement of the range finders is as follows: at least three Z-axis direction range finders are arranged on the top of the matching beam segment position, and at least one Y-axis direction range finder is arranged on the left or right side of the matching beam segment position; Distance meter, at least two X-axis distance meters are arranged on the front side or the rear side of the matching beam section; The third step is to input the design distance value and matching limit difference value between each matching measuring point of the matching beam section and the corresponding rangefinder in the mobile device; The fourth step is to start the matching measurement program and all rangefinders in the mobile device. Each rangefinder will measure the actual distance value between itself and the corresponding matching measuring point, and send each actual distance value to Mobile devices; In the fifth step, the matching measurement program will automatically calculate the deviation value between each matching measuring point of the matching beam segment and the design distance value according to each actual distance value received in the fourth step and the design distance value input in the third step; and guide the matching The beam segment moves according to the deviation value; In the sixth step, when the deviation calculated by the matching measurement program is within the range of the matching limit, the matching is successful; otherwise, the fourth and fifth steps are repeated. 2. The matching measurement method of the short-line matching method prefabricated bridge according to claim 1, characterized in that: the matching measurement system includes 8 range finders with built-in bluetooth, and the 8 range finders are respectively: 4 Z Axis rangefinder, 2 Y-axis rangefinders and 2 X-axis rangefinders. 3. The matching measurement method of the prefabricated bridge by short-line matching method according to claim 1, characterized in that: the matching measurement system further comprises a total station. 4. the matching measuring method of the short-line matching method prefabricated bridge according to claim 3, it is characterized in that: in the described 4th step, before each range finder all starts, first measures the initial position of the matching beam section with a total station position, and input the initial position information into the mobile device, and then start the matching measurement program in the distance meter and the mobile device, and the matching measurement program directly calculates the design distance value and the initial position information according to the input design distance value and initial position information. The position information is the deviation value between the two, and guides the matching beam segment to move according to the deviation value. 5. The matching measurement method of prefabricated bridges by short-line matching method according to claim 1, characterized in that: several matching measuring points are arranged on the matching beam section.