CN212404890U - Balanced regulation and control device of cable-stay bridge rotation construction - Google Patents
Balanced regulation and control device of cable-stay bridge rotation construction Download PDFInfo
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- CN212404890U CN212404890U CN202020903527.6U CN202020903527U CN212404890U CN 212404890 U CN212404890 U CN 212404890U CN 202020903527 U CN202020903527 U CN 202020903527U CN 212404890 U CN212404890 U CN 212404890U
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Abstract
The utility model relates to a cable-stayed bridge swivel construction balance regulation device, which relates to the technical field of swivel bridge construction and comprises a lower turntable, an upper turntable, a main tower, a plurality of load detection devices and a plurality of force application devices, wherein the main tower is obliquely arranged on the upper turntable and can rotate around the lower turntable through the upper turntable; the load detection devices are arranged on the lower rotary table at intervals along the longitudinal bridge direction and are supported between the upper rotary table and the lower rotary table; the load detection devices are positioned on the same side of the main tower of the cable-stayed bridge in the inclination direction, and the connecting lines of all the load detection devices are parallel to the longitudinal central line of the lower turntable; the force applying device is assembled on the upper turntable; all the force applying devices are arranged at intervals along the longitudinal bridge direction, the connecting lines of all the force applying devices are parallel to the longitudinal central line of the lower turntable, and the force applying devices and the load detecting devices are distributed on two sides of the longitudinal central line of the lower turntable; and the force applying device is used for applying pressure to the upper rotary disc so as to balance the main tower.
Description
Technical Field
The application relates to the technical field of bridge construction of turning, in particular to a balanced regulation and control device for cable-stayed bridge turning construction.
Background
At present, in order to reduce the influence on an operation line as much as possible, bridge swivel construction is often the first choice or even the necessary choice when crossing railways and highways. The rotating device of the rotating bridge consists of a lower rotating disc, an upper spherical hinge, a lower rotating disc, a slideway and a traction device, wherein the upper rotating disc and the lower rotating disc can rotate around the lower rotating disc through the upper spherical hinge. And constructing pier columns and beam bodies on the upper rotary table. After the construction of the pier column and the beam body is completed, the rotating part pulls the traction rope oppositely through a jack to form rotating force to realize rotating.
In recent years, the construction quantity, tonnage and span of the domestic turning bridge are developed and improved in a breakthrough manner. In order to obtain larger span, the structural form of the swivel bridge is changed greatly, and the cable-stayed bridge structure is not a T-shaped structure, a continuous beam bridge or a continuous rigid frame bridge any more and is applied more quickly; in order to control the weight of the rotating body, the main beam material does not adopt concrete any more, but adopts steel with lighter self weight; in order to obtain greater traffic co-traffic guarantee, the bridge deck lanes are more and more, so that the width of the bridge deck is wider. The span of a certain cross-railway swivel cable-stayed bridge is 150+150m, in order to meet the requirement of crossing an operation line and meet special geological conditions and the trend of the bridge at a bridge site, the plane of a bridge deck of a steel box girder is linearly designed into a curve, the bridge deck is arranged in an ultrahigh way, and in order to balance transverse unbalanced moment generated by the factors, a main tower is arranged into a single-column tower with the height of 86m and the inclination of 3 degrees, so that the gravity center of a tower column in the whole main tower construction process is always changed, and the calculation and the monitoring are very difficult to be accurate; if the center of gravity is too large, the whole main tower is too inclined, which may cause the main tower to overturn and cause a very high risk.
In the related technology, the gravity center research of the swivel bridge is mainly determined by an unbalanced weighing test of a spherical hinge vertical rotation method before a swivel, but the method is not applicable to the gravity center research in the construction process of a main tower before the swivel; stress elements are arranged on a rotating disc below the rotating bridge and a rotating disc above the rotating bridge, and the gravity center change condition is judged by monitoring stress values, but the accuracy of the gravity center obtained by the method is poor, the calculation process is complex, and adjustment of the balance of the rotating bridge is not considered.
Disclosure of Invention
The embodiment of the application provides a balanced regulation and control device of cable-stay bridge rotation construction to need obtain barycentric position and focus value among the solution correlation technique and adjust the balance among the bridge construction process of rotating, and the focus position that obtains and the accuracy of focus value are poor, lead to the inaccurate problem of balance adjustment.
First aspect provides a balanced regulation and control device of cable-stay bridge rotation construction, and it includes:
a lower turntable;
an upper turntable;
the main tower is obliquely arranged on the upper rotary table, and the main tower can rotate around the lower rotary table through the upper rotary table;
the load detection devices are arranged on the lower rotary table at intervals along the longitudinal bridge direction and are supported between the upper rotary table and the lower rotary table; the load detection devices are positioned on the same side of the main tower of the cable-stayed bridge in the inclination direction, and the connecting lines of all the load detection devices are parallel to the longitudinal central line of the lower turntable;
the force applying devices are assembled on the upper turntable; all the force applying devices are arranged at intervals along the longitudinal bridge direction, the connecting lines of all the force applying devices are parallel to the longitudinal central line of the lower rotary table, and the force applying devices and the load detecting devices are distributed on two sides of the longitudinal central line of the lower rotary table; and the force applying device is used for applying pressure to the upper rotary disc so as to balance the main tower.
In some embodiments, the apparatus further comprises:
the sensor is connected with the force application device and is used for detecting the pressure applied by the force application device;
the control device is connected with the load detection device, the force application device and the sensor, is used for acquiring all load forces detected by the load detection device and pressure detected by the sensor, and combines the distance R between the load detection device and the longitudinal center line of the lower rotary table1And the distance R between the force applying device and the longitudinal center line of the lower rotary table2Calculating to obtain the transverse eccentricity e of the main tower; and the number of the first and second groups,
and is also used for: calculating to obtain the pressure delta P which needs to be added to the upper rotary disc by each force adding device according to the relation between the e and a preset first eccentric amount; and controlling the force applying device to apply delta P pressure to the upper turntable.
In some embodiments, the force means comprises:
the jack is internally provided with a through hole;
two anchors arranged at both ends of the jack; the sensor is arranged between the upper turntable and one of the two anchorage devices close to the upper turntable;
one end of each prestressed steel strand is embedded in the lower rotary table, and the other end of each prestressed steel strand sequentially penetrates through the upper rotary table, the sensor, one of the two anchors, the jack and the other one of the two anchors; the prestressed steel strand is anchored on the two anchorage devices; and the jack is used for jacking the anchorage device so as to stretch the prestressed steel strand and apply pressure to the upper rotary disc.
In some embodiments, the number of the force-adding devices is 2q, and all the force-adding devices are symmetrically arranged about the transverse center line of the lower rotary disc, wherein q is a positive integer.
In some embodiments, the number of the load detection devices is 2m, and all the load detection devices are symmetrically arranged about the transverse center line of the lower rotary table, wherein m is a positive integer.
In some embodiments, the number of the load detection devices is equal to the number of the force application devices, and the load detection devices are arranged in a one-to-one correspondence manner, and all the load detection devices are symmetrically arranged about the transverse center line of the lower rotary table.
In some embodiments, all of the force applicators are evenly spaced.
In some embodiments, all of the load detection devices are evenly spaced.
The beneficial effect that technical scheme that this application provided brought includes: the transverse concrete gravity center position and the gravity center value of the main tower of the swivel bridge are not required to be obtained, the real-time monitoring of the transverse balance of the whole main tower construction process is realized, the main tower is prevented from overturning, and the improvement of the construction quality and the reduction of the construction safety risk in the main tower construction process are ensured.
The application provides a balanced regulation and control device of cable-stay bridge rotation construction, owing to need not obtain the horizontal concrete focus position and the focus value of the bridge king-tower of rotating, only judge the eccentric change condition of focus of king-tower through the horizontal moment of king-tower, then balance the judgement to the moment that thrust augmentation device exerted pressure and the loading force that load detection device bore produced, and exert pressure to the last carousel through thrust augmentation device, balance king-tower horizontal moment, therefore, the horizontal balance real-time supervision of king-tower construction overall process can be realized to this application, the king-tower has been avoided taking place to topple, the promotion and the construction safety risk of having guaranteed king-tower work progress construction quality descend.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cable-stayed bridge swivel construction balance regulation and control device provided in the embodiment of the present application;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural diagram of a force application device.
In the figure: 1. a lower turntable; 2. a load detection device; 3. a main tower; 4. an upper turntable; 5. a force applying device; 50. a jack; 51. an anchorage device; 52. pre-stressed steel strands; 6. a sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example 1:
referring to fig. 1 and fig. 2, embodiment 1 of the present application provides a balanced regulation and control device for cable-stayed bridge swivel construction, where an inclination direction of a main tower 3 of a cable-stayed bridge in embodiment 1 of the present application is known and is inclined toward the right side, the device includes a lower turntable 1, an upper turntable 4, a main tower 3, a plurality of load detection devices 2 and a plurality of force application devices 5, the upper turntable 4 is rotatably connected with the lower turntable 1 through a spherical hinge, a center of the lower spherical hinge coincides with a center of the lower turntable 1, a longitudinal center line of the lower turntable 1 is a longitudinal center line of the lower spherical hinge, and a transverse center line of the lower turntable 1 is a transverse center line of the lower spherical hinge. The main tower 3 is obliquely arranged on the upper rotary table 4, and the main tower 3 can rotate around the lower rotary table 1 through the upper rotary table 4. The load detection devices 2 are arranged on the lower rotary table 1 at intervals along the longitudinal bridge direction and are supported between the upper rotary table 4 and the lower rotary table 1; the plurality of load detection devices 2 are positioned on the same side of the main tower 3 of the cable-stayed bridge in the inclination direction, namely on the right side of the longitudinal center line of the lower turntable 1, and in order to accurately obtain the resultant moment on the right side of the longitudinal center line of the lower turntable 1 in the construction process, the connecting lines of all the load detection devices 2 are parallel to the longitudinal center line of the lower turntable 1; a plurality of force applying devices 5 are arranged on the upper turntable 4; all the force applying devices 5 are arranged at intervals along the longitudinal bridge direction, and the force applying devices 5 and the load detection device 2 are distributed on two sides of the longitudinal center line of the lower turntable 1, namely the force applying devices 5 are distributed on the left side of the longitudinal center line of the lower turntable 1; in order to accurately obtain the resultant moment of the sitting side of the longitudinal center line of the lower rotary table 1 in the construction process, the connecting lines of all the force applying devices 5 are parallel to the longitudinal center line of the lower rotary table 1, and the force applying devices 5 are used for applying pressure to the upper rotary table 4 to generate a moment on the left side of the upper rotary table 4 so as to offset the moment generated on the right side of the upper rotary table 4 by the load force borne by the load detection device 2, so that the main tower 3 is balanced, and the main tower 3 is prevented from transversely overturning.
The utility model provides a cable-stay bridge balanced regulation and control device of turning construction need not obtain the horizontal concrete barycenter position and the focus value of turning bridge king tower 3, only judge the eccentric change condition of focus of king tower 3 through moment on king tower 3 left side and right side, then balance the judgement to the moment that pressure that thrust augmentation device 5 applyed and the loading force that load detection device 2 bore produced, and apply pressure to last carousel 4 through thrust augmentation device 5, balance king tower 3 horizontal moment, realize the horizontal balanced real-time supervision of king tower 3 construction overall process, main tower 3 has been avoided toppling, the promotion and the construction safety risk of having guaranteed king tower 3 work progress construction quality descend.
Preferably, the device also comprises a sensor 6 and a control device, wherein the sensor 6 is connected with the force application device 5 and is used for detecting the pressure applied by the force application device 5; the control device is connected with the load detection device 2, the force applying device 5 and the sensor 6, and is used for acquiring all load forces detected by the load detection device 2 and pressure detected by the sensor 6, and combining the distance R between the load detection device 2 and the longitudinal center line of the lower rotary table 11And the distance R of the force application device 5 from the longitudinal center line of the lower turntable 12The transverse eccentricity e of the main tower 3 is calculated by a first calculation formula as follows:
MG＝MZ-MJ
in the formula: piThe pressure applied by the ith force applying device 5 to the upper rotating disk 4 is 1, 2. MJThe sum of the moments from the pressure exerted by all the force applying devices 5 on the upper rotary disk 4 to the longitudinal center line of the lower rotary disk 1; fkThe load force detected by the kth load detection device 2 is k 1, 2.. m, where m is the number of load detection devices 2; mZThe sum of the load force detected by all the load detection devices 2 and the moment from the longitudinal center line of the lower turntable 1; mGThe difference between the sum of the moments of all the force applying devices 5 and the sum of the moments of all the load detection devices 2; g is the sum of the weights of the main tower 3 and the upper rotating disc 4.
And the control means is further adapted to: according to the relation between e and a preset first eccentricity amount of 0.050, when e is larger than 0.050, calculating to obtain the pressure delta P of each force application device 5, which needs to be added to the upper rotary disc 4, based on a preset second calculation formula; and controls the force applying device 5 to apply pressure delta P to the upper rotating disk 4. Wherein, the preset second calculation formula is as follows:
MG＝MZ-MJ
the transverse moment of the main tower 3 is judged in real time through the pressure applied to the upper rotary disc 4 by the intelligent detection force applying device 5 and the load force born by the load detection device 2, the transverse unbalanced moment is adjusted in time, and the transverse balance of the main tower 3 can be realized only by changing the pressure value applied by the force applying device 5.
Further, referring to fig. 3, the force applying device 5 includes a jack 50, two anchors 51 and a prestressed steel strand 52, wherein a through-beam hole penetrates through the jack 50; two anchors 51 are arranged at both ends of the jack 50; the sensor 6 is arranged between the upper turntable 4 and one of the two anchors close to the upper turntable 4; one end of a prestressed steel strand 52 is pre-embedded on the lower rotary table 1, and the other end of the prestressed steel strand sequentially penetrates through the upper rotary table 4, the sensor 6, one of the two anchors 51, the jack 50 and the other one of the two anchors 51; and the prestressed steel strand 52 is anchored on two anchors 51; and the jack 50 is used for jacking the anchorage device 51 at the upper end of the upper rotary table so as to apply reverse pressure to the anchorage device 51 at the lower end, and the anchorage device 51 at the lower end tensions the steel strand 52 to stretch the prestressed steel strand 52, so that the effect of applying pressure to the upper rotary table 4 is realized.
Further, the number of the force applying devices 5 is 2q, and all the force applying devices 5 are symmetrically arranged about the transverse center line of the lower rotary table 1, wherein q is a positive integer. The number of the force adding devices 5 in embodiment 1 of the present application is 6, three of the force adding devices 5 are located above the transverse center line of the lower turntable 1, the other three force adding devices are located below the transverse center line of the lower turntable 1, and the three force adding devices 5 located above and the three force adding devices 5 located below are symmetrically arranged with respect to the transverse center line of the lower turntable 1. Such an arrangement ensures the longitudinal balance of the left side of the main tower 3, preventing longitudinal overturning of the right side of the main tower 3 during adjustment of the lateral balance.
Further, the number of the load detection devices 2 is 2m, and all the load detection devices 2 are symmetrically arranged about the transverse center line of the lower rotating disc 1, wherein m is a positive integer. The number of the load detection devices 2 in embodiment 1 of the present application is 6, three of the load detection devices are located above the transverse center line of the lower turntable 1, the other three load applying devices are located below the transverse center line of the lower turntable 1, and the three force applying devices 5 located above and the three force applying devices 5 located below are symmetrically arranged with respect to the transverse center line of the lower turntable 1. Such an arrangement ensures longitudinal balancing of the right side of the main tower 3, preventing longitudinal overturning of the right side during adjustment of the lateral balancing.
Furthermore, the number of the load detection devices 2 is equal to that of the force application devices 5, and the load detection devices 2 are arranged in a one-to-one correspondence manner, and all the load detection devices 2 are symmetrically arranged about the transverse center line of the lower rotary table 1. Theoretically, the moment generated by one force application device 5 offsets the moment generated by the corresponding load detection device 2, so that the symmetrical arrangement is more beneficial to the transverse and longitudinal balance in the construction process of the main tower 3.
Preferably, all the force application devices 5 are arranged at regular intervals, and all the load detection devices 2 are arranged at regular intervals. The mutual influence of the moments generated by the two adjacent force adding devices 5 or the two adjacent load detection devices 2 is avoided, the pressure adjustment of the force adding devices 5 is more convenient and accurate, and the transverse and longitudinal unbalance of the main tower 3 can be quickly adjusted.
Example 2:
referring to fig. 1 and fig. 2, an embodiment 2 of the present application provides a cable-stayed bridge swivel construction balance regulation and control method, where an inclination direction of a main tower 3 of a cable-stayed bridge in the embodiment 2 of the present application is known and is inclined towards a right side, and the method includes the following steps:
s1: a plurality of load detection devices 2 are arranged on the lower rotary table 1 at intervals along the longitudinal bridge direction, the load detection devices 2 are positioned at the same side of the inclined direction of a main tower 3 of a cable-stayed bridge, namely, the load detection devices 2 are positioned at the right side of the longitudinal central line of the lower rotary table 1, and in order to accurately obtain the resultant moment on the right side of the longitudinal central line of the lower rotary table 1 in the construction process, the connecting lines of all the load detection devices 2 are parallel to the longitudinal central line of the lower rotary table 1, so that in the process of arranging the load detection devices 2, only the distance R between the load detection devices 2 and the longitudinal central line of the lower rotary table 1 needs to be1All the load detection devices 2 are arranged parallel to the longitudinal center line of the lower rotary table 1 and at a distance R from the longitudinal center line of the lower rotary table 11On the straight line, can accomplish all load detection device 2's arrangement installation, convenient operation and easily realization.
S2: an upper rotary table 4 is constructed on the lower rotary table 1, the upper rotary table 4 is rotatably connected with the lower rotary table 1 through a spherical hinge, the center of the lower spherical hinge is overlapped with the center of the lower rotary table 1, the longitudinal center line of the lower rotary table 1 is the longitudinal center line of the lower spherical hinge, and the transverse center line of the lower rotary table 1 is the transverse center line of the lower spherical hinge. And the load detection device 2 is supported between the upper rotary table 4 and the lower rotary table 1, and the load detection device 2 is used for detecting the load force applied by the upper rotary table 4 to the load detection device 2 in the construction process of the upper rotary table 4 and the main tower 3.
S3: the upper rotary table 4 is provided with a plurality of force applying devices 5 for applying pressure to the upper rotary table 4, all the force applying devices 5 are arranged at intervals along the longitudinal bridge direction, the force applying devices 5 and the load detection device 2 are distributed on two sides of the longitudinal center line of the lower rotary table 1, namely the force applying devices 5 are distributed on the left side of the longitudinal center line of the lower rotary table 1. In order to accurately obtain the seating-side resultant moment of the longitudinal center line of the lower rotary table 1 in the construction process, the connecting lines of all the force applying devices 5 are parallel to the longitudinal center line of the lower rotary table 1, so that in the process of arranging the force applying devices 5, only the distance R between the force applying devices 5 and the longitudinal center line of the lower rotary table 1 needs to be determined2All the force applying devices 5 are arranged parallel to the longitudinal centre line of the lower rotary table 1 at a distance R from the longitudinal centre line of the lower rotary table 12On the straight line, all the force adding devices 5 can be arranged and installed, the operation is convenient, and the realization is easy. And the connecting lines of all the force applying devices 5 are parallel to the connecting lines of all the load detecting devices 2, so that the balance between the upper rotary table 4 and the left and right sides of the main tower 3, namely the transverse balance can be realized by only changing the pressure applied to the upper rotary table 4 by the force applying devices 5.
S4: the main tower 3 is constructed on the upper rotary table 4, and the load force detected by all the load detection devices 2 is obtained in real time in the process of constructing the main tower 3, generally, the load force detected by the load detection devices 2 increases with the increase of the construction height of the main tower 3, so the load force on the right side of the upper rotary table 4 gradually increases, and the main tower 3 may overturn towards the right.
S5: the upper turn plate 4 is pressed by the pressing means 5, and the pressure applied thereto is detected. Each thrust augmentation device 5 in this application embodiment 2 is equal to last carousel 4 applys pressure, and thrust augmentation device 5 applys pressure to the left side of going up carousel 4, and the load power that load detection device 2 on 4 right sides on the balanced carousel bore to offset the pressure of main tower 3 to going up 4 right sides on the carousel, realize the horizontal balance of carousel 4, prevent that main tower 3 from the danger of transversely toppling appearing.
S6: according to the load force and the pressure, and in combination with the distance R between the load detection device 2 and the longitudinal central line of the lower turntable 11And the distance R between the force applying device 5 and the longitudinal center line of the lower rotary table 12And calculating to obtain the transverse eccentricity e of the main tower 3 based on a preset first calculation formula.
Wherein the first calculation formula is as follows:
MG＝MZ-MJ
in the formula: piThe pressure applied by the ith force applying device 5 to the upper rotating disk 4 is 1, 2. MJThe sum of the moments from the pressure exerted by all the force applying devices 5 on the upper rotary disk 4 to the longitudinal center line of the lower rotary disk 1; fkThe load force detected by the kth load detection device 2 is k 1, 2.. m, where m is the number of load detection devices 2; mZThe force from the load force detected by all the load detecting means 2 to the longitudinal center line of the lower turntable 1Sum of moments; mGThe difference between the sum of the moments of all the force applying devices 5 and the sum of the moments of all the load detection devices 2; g is the sum of the weights of the main tower 3 and the upper rotating disc 4.
According to the moment sum generated by the load force born by the right side of the upper rotating disk 4, the moment sum with the same size is applied to the left side of the upper rotating disk 4 to offset the moment sum on the right side, so that the danger of transverse overturning in the construction process of the main tower 3 is prevented.
S7: and comparing e with a preset first eccentric amount which is 0.050, and when e is greater than 0.050, calculating to obtain the pressure delta P of each force application device 5 to be added to the upper rotary disc 4 based on a preset second calculation formula. In the process of constructing the main tower 3, if e is not larger than the first eccentricity amount, the force applying devices 5 do not apply pressure to the upper rotating disc 4, the detected pressure is 0, and once e is larger than the first eccentricity amount, the force applying devices 5 apply delta P pressure to the upper rotating disc 4 so as to balance the moment applied to the left side and the right side of the upper rotating disc 4, and therefore the transverse balance of the main tower 3 is achieved. Wherein, the preset second calculation formula is as follows:
MG＝MZ-MJ
s8: the pressure of delta P is increased to the upper rotary table 4 through the force adding devices 5, and the pressure of delta P is increased to each force adding device 5 so as to offset the moment on the right side of the upper rotary table 4 and realize the transverse balance of the main tower 3.
The cable-stayed bridge swivel construction balance regulation and control method does not need to obtain the transverse specific gravity center position and the gravity center value of the main tower 3 of the swivel bridge, the gravity center eccentric change condition of the main tower 3 is judged only by intelligently monitoring the transverse moment of the main tower 3, then the balance judgment is carried out on the pressure applied by the detected force applying device 5 and the moment generated by the load force born by the load detection device 2, the pressure is applied to the upper rotary disc 4 through the force applying device 5, the transverse moment of the main tower 3 is balanced, the transverse balance real-time monitoring and early warning of the whole construction process of the main tower 3 are realized, the main tower 3 is prevented from overturning, and the promotion of the construction quality of the construction process of the main tower 3 and the reduction of the construction safety risk are ensured.
Example 3:
the basic contents of the embodiment 3 of the present application are the same as those of the embodiment 3, except that: the number of the force applying devices 5 in embodiment 2 of the present application is 2q, and all the force applying devices 5 are symmetrically arranged about the transverse center line of the lower turntable 1, wherein q is a positive integer. For example, the number of the force applying devices 5 of embodiment 2 of the present application is 6, three of the force applying devices are located above the transverse center line of the lower turntable 1, the other three force applying devices are located below the transverse center line of the lower turntable 1, and the three force applying devices 5 located above and the three force applying devices 5 located below are arranged symmetrically with respect to the transverse center line of the lower turntable 1. Such an arrangement ensures the longitudinal balance of the left side of the main tower 3, preventing longitudinal overturning of the right side of the main tower 3 during adjustment of the lateral balance. In step S5: after the force applying device 5 applies pressure to the upper rotating disk 4 and detects the applied pressure, the method further comprises the following steps:
s51: the maximum value P is selected among all the pressures applied by the force application means 5 detectedmaxAnd a minimum value PminSpecifically, the method comprises the following steps: the pressure exerted by the 2q force-applying devices 5 is P1、 P2......P2qFrom P1、P2......P2qTo select the maximum value PmaxAnd a minimum value PminCalculating and obtaining a difference ratio K according to a preset third calculation formula;
wherein, the preset third calculation formula is as follows:
K＝(Pmax-Pmin)/Pmax。
s52: comparing K with a preset ratio, the application implementsExample 2 the predetermined ratio was 15%, and when K was greater than 15%, the maximum value P was indicatedmaxAnd a minimum value PminToo large difference between them, maximum value PmaxAnd a minimum value PminThe moment unbalance generated to the main tower 3 along the longitudinal direction can cause the main tower 3 to overturn longitudinally, so that the applied pressure is PminThe pressure of the urging device 5 is adjusted so that the applied pressure is PminThe pressure increase Δ P' of the force means 5, wherein Δ P ═ Pmax-Pmin. So that the applied pressure is PminAnd the force applying device 5 applies a pressure PmaxThe moment of the force applying device 5 is equal, and the generation of longitudinal unbalance is prevented.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a balanced regulation and control device of cable-stay bridge rotation construction which characterized in that, it includes:
a lower turntable (1);
an upper turntable (4);
the main tower (3) is obliquely arranged on the upper rotating disc (4), and the main tower (3) can rotate around the lower rotating disc (1) through the upper rotating disc (4);
the load detection devices (2) are arranged on the lower rotary table (1) at intervals along the longitudinal bridge direction and supported between the upper rotary table (4) and the lower rotary table (1); the plurality of load detection devices (2) are positioned on the same side of the main tower (3) of the cable-stayed bridge in the inclined direction, and the connecting line of all the load detection devices (2) is parallel to the longitudinal central line of the lower turntable (1);
the force applying devices (5) are assembled on the upper rotating disc (4); all the force applying devices (5) are arranged at intervals along the longitudinal bridge direction, the connecting lines of all the force applying devices (5) are parallel to the longitudinal central line of the lower rotary table (1), and the force applying devices (5) and the load detecting device (2) are distributed on two sides of the longitudinal central line of the lower rotary table (1); and the force applying device (5) is used for applying pressure to the upper rotating disc (4) so as to balance the main tower (3).
2. The cable-stayed bridge swivel construction balance regulating and controlling device as claimed in claim 1, further comprising:
a sensor (6) connected to the force means (5) and adapted to detect the pressure exerted by the force means (5);
the control device is connected with the load detection device (2), the force application device (5) and the sensor (6) and is used for acquiring all load forces detected by the load detection device (2) and pressure detected by the sensor (6) and combining the distance R between the load detection device (2) and the longitudinal center line of the lower rotary table (1)1And the distance R between the force applying device (5) and the longitudinal center line of the lower rotating disc (1)2Calculating to obtain the transverse eccentricity e of the main tower (3); and the number of the first and second groups,
and is also used for: according to the relation between e and a preset first eccentric quantity, calculating to obtain the pressure delta P which needs to be increased to the upper rotating disc (4) by each force applying device (5); and controlling the force applying device (5) to apply delta P pressure to the upper rotating disc (4).
3. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 2, wherein the force applying device (5) comprises:
a jack (50) having a through hole formed therein;
two anchors (51), the two anchors (51) are arranged at two ends of the jack (50); the sensor (6) is arranged between the upper turntable (4) and one of the two anchorage devices close to the upper turntable (4);
one end of each prestressed steel strand (52) is embedded in the lower rotary table (1), and the other end of each prestressed steel strand penetrates through the upper rotary table (4), the sensor (6), one of the two anchors (51), the jack (50) and the other one of the two anchors (51) in sequence; and the prestressed steel strand (52) is anchored on the two anchorage devices (51); and the jack (50) is used for jacking the anchorage device (51) so as to stretch the prestressed steel strand (52) and apply pressure to the upper turntable (4).
4. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 1, wherein the number of the force application devices (5) is 2q, all the force application devices (5) are symmetrically arranged about the transverse center line of the lower turntable (1), and q is a positive integer.
5. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 1, wherein the number of the load detection devices (2) is 2m, all the load detection devices (2) are symmetrically arranged about the transverse center line of the lower turntable (1), wherein m is a positive integer.
6. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 5, wherein the number of the load detection devices (2) is equal to the number of the force application devices (5), and the load detection devices are arranged in a one-to-one correspondence, and all the load detection devices (2) are symmetrically arranged about the transverse center line of the lower turntable (1).
7. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 1, characterized in that all the force applying devices (5) are arranged at even intervals.
8. The cable-stayed bridge swivel construction balance regulation and control device as claimed in claim 1, characterized in that all the load detection devices (2) are arranged at even intervals.
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| CN202020903527.6U CN212404890U (en) | 2020-05-26 | 2020-05-26 | Balanced regulation and control device of cable-stay bridge rotation construction |
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| CN202020903527.6U CN212404890U (en) | 2020-05-26 | 2020-05-26 | Balanced regulation and control device of cable-stay bridge rotation construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535204A (en) * | 2020-05-26 | 2020-08-14 | 中铁大桥科学研究院有限公司 | Cable-stayed bridge swivel construction balance regulation and control method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535204A (en) * | 2020-05-26 | 2020-08-14 | 中铁大桥科学研究院有限公司 | Cable-stayed bridge swivel construction balance regulation and control method and device |
| CN111535204B (en) * | 2020-05-26 | 2024-05-14 | 中铁大桥科学研究院有限公司 | Balance regulation and control method and device for swivel construction of cable-stayed bridge |
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