AU2021105108A4 - Method for Monitoring Verticality Status of Driving of Large-Diameter Steel Casing in Bridge Pile Foundation Construction - Google Patents

Abstract

Disclosed are a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, which belongs to the technical field of bridge foundation construction, comprising: installing a sensor on a steel casing, and hoisting the steel casing to a steel casingguide frame; monitoring verticality data of the steel casing and sending the data to a controller; judging whether the verticality of the steel casing reaches a standard by the controller, if so, recording the verticality data of the steel casing before driving, if not, controlling a jack to adjust the position of the steel casing; starting a pile hammer for working, and driving the steel casing for performing sinking operation; monitoring the verticality data of the steel casing in real time and sending the data to the controller by the sensor; judging whether the verticality of the steel casing reaches the standard in real time by the controller, if so, continuing the pile hammer for working; if not, stopping the pile hammer from working, and controlling the jack to adjust the position of the steel casing; and stopping driving when driving and sinking the steel casing to a set elevation. This method improves automation level of the construction of the steel casing, ensures construction precision of the steel casing, and improves construction efficiency. 1/4 Itstallng a ser Hoising to a steel ca ing gude frame Before driving Adopting the jack to) N,,-'hether tfe steel caig , 'testanad verity dala 7e beore dnvin Starang the pile) hammer for tq)pUng thP pde a harmer from w cdesg. and ados gth~fe jakto 4-< vert cLityrfeaches 24I t t Me pltm ieSandar During driving Yes Stwpog the pile )hther hanmner frmm ,phtudavibratl W klng 2and adclptif-lrqunc nornm No0 hammer for worm Recording ffhe vetialtydaaafter Soping driving After diing driving Fig. 1

Description

1/4

Itstallng a ser

Hoising to a steel ca ing gude frame

Before driving

Adopting the jack to) N,,-'hether

tfe steel caig , 'testanad

verity dala 7e beore dnvin Starang the pile) hammer for

tq)pUng thP pdea harmer from w cdesg. and ados gth~fe jakto 4-< vert cLityrfeaches 24I t t Me pltm ieSandar During driving

Yes Stwpog the pile )hther hanmner frmm ,phtudavibratl W klng 2and adclptif-lrqunc nornm

No0

hammer for worm

Recording ffhe vetialtydaaafter Soping driving After diing driving

Fig. 1

Specification Method for Monitoring Verticality Status of Driving of Large Diameter Steel Casing in Bridge Pile Foundation Construction

Field of the Invention The present application relates to the technical field of bridge foundation construction, in particular to a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction.

Background of the Invention At present, pile foundations for large-scale bridges are generally used in the design of large-diameter bored piles, and the large-diameter bored piles require large-diameter steel casings in the construction process. During the construction of underwater pile foundation of bridge, it is necessary to drive the steel casing to underwater for performing boring construction. The steel casing, as the most important auxiliary structure during the construction of bored piles, the verticality thereof directly affects the quality of pore forming. At present, the method of manual measurement combined with jack adjustment is generally adopted to detect and control the verticality of the steel casing. After determining the position of the steel casing, the distances between the top, middle and bottom of the steel casing and the plumb line are generally measured by the plumb line method, so as to calculate the verticality of the steel casing. It is not efficient to measure the verticality of the steel casing by means of the plum line method, the measurement accuracy is subject to the subjective judgment of inspectors, therefore, it is difficult to realize the real time monitoring and complete record of the verticality of the steel casing in the entire construction process. The verticality adjustment and control of the steel casing generally adopts a double-layer steel casing guide frame to provide positioning and guidance for the driving and sinking of the steel casing, and the jacks surrounded around the steel casing are installed on the steel casing guide frame to adjust the position of the steel casing and rectify a deviation of the steel casing.

At present, the method of manually detecting the verticality of the steel casing combined with manually adjusting the jack to adjust the verticality of the steel casing has low automation degree and low accuracy. During the construction process, it is necessary to manually adjust the position of the jack frequently, which seriously affects the construction progress, and is difficult to realize the closed-loop control in the entire driving construction of the steel casing.

Summary of the Invention The embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, so as to solve the problem of low automation degree in the method of manually detecting the verticality of steel casing combined with manually adjusting a jack to adjust the verticality of the steel casing in related technologies. The embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, wherein the method comprises the following steps: installing a sensor on a steel casing to monitor verticality thereof, and hoisting the steel casing to a steel casing guide frame; adopting the sensor to monitor verticality data of the steel casing before driving the steel casing and sending the data to a controller and a cloud storage; judging whether the verticality of the steel casing reaches a standard by the controller, if so, recording the verticality data of the steel casing before driving by the cloud storage, if not, controlling a jack to adjust the position of the steel casing by the controller and returning to the previous step; starting a pile hammer for working, and adopting the pile hammer to drive the steel casing for performing sinking operation; monitoring the verticality data of the steel casing in real time and sending the data to the controller by the sensor; judging whether the verticality of the steel casing reaches the standard in real time by the controller, if so, continuing the pile hammer for working, if not, stopping the pile hammer from working, controlling the jack to adjust the position of the steel casing by the controller and returning to the previous step; and stopping driving when driving and sinking the steel casing to a set elevation. In some embodiments, the jack comprises an upper jack which is arranged on the steel casing guide frame and surrounded around the steel casing and a lower jack which is arranged on the steel casing guide frame and surrounded around the steel casing; the upper jack comprises a first jack and a third jack which are symmetrically arranged along the Y-axis, and a second jack and a fourth jack which are symmetrically arranged along the X-axis; and the lower jack comprises a fifth jack and a seventh jack which are symmetrically arranged along the Y-axis, and a sixth jack and an eighthjack which are symmetrically arranged along the X-axis. In some embodiments, if an inclination angle a on the X-axis of the steel casing is positive, the controller controls the first jack and the seventh jack to retract, and controls the third jack and the fifth jack to push the steel casing synchronously; if the inclination angle a on the X-axis of the steel casing is negative, the controller controls the third jack and the fifth jack to retract, and controls the first jack and the seventh jack to push the steel casing synchronously; if an inclination angle P on the Y-axis of the steel casing is positive, the controller controls the second jack and the eighth jack to retract, and controls the fourth jack and the sixth jack to push the steel casing synchronously; and if the inclination angle P on the Y-axis of the steel casing is negative, the controller controls the fourth jack and the sixth jack to retract, and controls the second jack and the eighth jack to push the steel casing synchronously. In some embodiments, the sensor monitors the steel casing with an inclination angle of a on the X-axis, and monitors the steel casing with an inclination angle of P on the Y-axis; a height difference between the upper jack and the lower jack is 2h, and a midpoint between the upper jack and the lower jack is taken as a center of rotation of the steel casing; a deviation correction displacement of the steel casing along the X axis is I = h * tan a; and a deviation correction displacement L of the steel casing along the Y-axis is L = h * tan p. In some embodiments, the sensor comprises a biaxial inclinometer, wherein the biaxial inclinometer comprises a first biaxial inclinometer and a second biaxial inclinometer, and the first biaxial inclinometer and the second biaxial inclinometer are symmetrically arranged along the X-axis or Y-axis of the steel casing; the first biaxial inclinometer monitors the steel casing with the inclination angle of ai on the X-axis; and the first biaxial inclinometer monitors the steel casing with the inclination angle of on the Y-axis; the second biaxial inclinometer monitors the steel casing with the inclination angle of a2 on the X-axis; and the second biaxial inclinometer monitors the steel casing with the inclination angle of P2 on the Y-axis; and the inclination angle a on the X-axis of the steel casing is a = (a1

+ a 2 )/2; and inclination angle P on the Y-axis of the steel casing is f = (#1

+ #l2)/2. In some embodiments, the method further comprises the following steps: comprising an accelerometer in the sensor, installing the accelerometer on the steel casing, and configuring the accelerometer to monitor vibration data of the steel casing; adopting the accelerometer to monitor the vibration data of the steel casing in real time during the driving process of the steel casing and sending the vibration data of the steel casing to the controller; and judging whether the vibration data of the steel casing is abnormal in real time by the controller, if so, stopping the pile hammer from working, if not, continuing the pile hammer for working. In some embodiments, the vibration data comprises amplitude of the steel casing and vibration frequency of the steel casing, when both the amplitude of the steel casing and/or the vibration frequency of the steel casing exceed a set threshold, the controller determines that the driving of the steel casing is abnormal. In some embodiments, after the pile hammer stops working, a water jet or a mud suction machine is adopted to remove obstructions at the bottom of the steel casing. In some embodiments, the controller is a single chip microcomputer or a programmable controller. In some embodiments, the sensor is adopted to monitor the verticality data of the steel casing after driving the steel casing, and the verticality data of the steel casing is sent to the cloud storage and recorded. The beneficial effects of the technical solution provided in the present application are as follows. The present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction. The method of the present application installs a sensor on a steel casing to monitor verticality thereof, and hoists the steel casing to a steel casing guide frame ; adopts the sensor to monitor verticality data of the steel casing and sending the data to a controller and a cloud storage; judges whether the verticality data of the steel casing reaches a standard by the controller, if so, the cloud storage records the verticality data of the steel casing before driving, if not, the controller controls a jack to adjust the position of the steel casing; starts a pile hammer for working during the process of driving the steel casing, and adopts the pile hammer to drive the steel casing for performing sinking operation; monitors the verticality data of the steel casing in real time and sends the data to the controller by the sensor; judges whether the verticality data of the steel casing reaches the standard in real time by the controller, if so, the pile hammer continues working, if not, the pile hammer stops working, and the controller controls the jack to adjust the position of the steel casing; and stops driving when driving and sinking the steel casing to a set elevation. Therefore, the method of the present application adopts the sensor to monitor the verticality of the steel casing before driving the steel casing, when the verticality of the steel casing does not meet the design requirements before driving the steel casing, the controller is adopted to control the jack to adjust the verticality of the steel casing, so as to ensure that the verticality of the steel casing can meet the design requirements before driving. During the process of driving the steel casing, the sensor is adopted again to monitor the verticality of the steel casing, when the verticality of the steel casing cannot meet the design requirements during the driving process of the steel casing, the jack is controlled by the controller to adjust the verticality of the steel casing, so as to ensure that the verticality of the steel casing can meet the design requirements during the driving process, until the driving of the steel casing reaches a set elevation. The method realizes automatic monitoring of the large-diameter steel casing during the driving process, and monitoring data recording of the entire process, which improves automation level of the construction of the steel casing, ensures construction precision of the steel casing, and improves construction efficiency.

Description of the Drawings In order to better illustrate the technical solution in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments, and it is obvious that the drawings in the following description are only a part of embodiments of the present application, for those of ordinary skill in the art, other drawings may also be obtained based on these drawings without any creative work. Fig. 1 is a flowchart of the method in the embodiment of the present application; Fig. 2 is a front view of the structure in the embodiment of the present application; Fig. 3 is a top view of a layout structure of an upper jack in the embodiment of the present application; Fig. 4 is a top view of a layout structure of a lower jack in the embodiment of the present application; Fig. 5 is a schematic diagram of a steel casing inclined to the X-axis in the embodiment of the present application; Fig. 6 is a schematic diagram of a steel casing inclined to the Y-axis in the embodiment of the present application. In the figures: 1. steel casing; 2. steel casing guide frame; 3. sensor; 4. upper jack; 5. lower jack; 41. the first jack; 42. the second jack; 43. the third jack; 44. the fourthjack; 51. the fifthjack; 52. the sixthjack; 53. the seventhjack; 54. the eighth jack.

Detailed Description of the Embodiments In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. The embodiment of the present application provides a method for monitoring verticality status of driving (inserting) of large-diameter steel casing in bridge pile foundation construction, which can solve the problem of low automation degree in the method of manually detecting the verticality of the steel casing combined with manually adjusting the jack to adjust the verticality of the steel casing in related technologies. As shown in Fig. 1 and Fig. 2, the embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, which comprises the following steps. Step 1. A sensor 3 is installed on the outer wall of a steel casing 1 to monitor verticality of the steel casing 1. The sensor 3 is installed on the upper position of the steel casing 1, and the steel casing 1 is hoisted to a steel casing guideframe 2 which provides preliminary positioning for the sinking of the steel casing 1. Step 2. The sensor 3 is adopted to monitor verticality data of the steel casing 1 before driving the steel casing 1 and sends the verticality data of the steel casing 1 to a controller and a cloud storage. The controller is preferably a single chip microcomputer or a programmable controller. The cloud memory is configured to record and store the verticality data of the steel casing 1 and retain the construction data so as to facilitate the traceability of the later data. Step 3. The controller judges whether the verticality of the steel casing 1 reaches a standard according to the verticality data of the steel casing 1. If so, the cloud storage records the verticality data of the steel casing 1 before driving; if not, the controller controls a jack to adjust the position of the steel casing 1, then returning to Step 2. Step 4. A pile hammer starts to work, and is adopted to drive the steel casing 1 for performing sinking operation. Step 5. The sensor 3 is adopted to monitor the verticality data of the steel casing 1 in real time during the driving of the steel casing 1 and sends the verticality data of the steel casing 1 to the controller. Step 6. The controller judges whether the verticality of the steel casing 1 reaches the standard in real time according to the verticality data of the steel casing 1. If so, the pile hammer continues working, then going to Step 7; if not, the pile hammer stops working, and the controller controls the jack to adjust the position of the steel casing 1, then returning to the Step 5. Step 7. After the steel casing 1 is driven and sunk to a set elevation, the driving is stopped. Step 8. The sensor 3 is adopted to re-monitor the verticality data of the steel casing 1 after driving the steel casing 1 and sends the verticality data of the steel casing 1 to the cloud storage for recording. The embodiment of the present application adopts the sensor 3 to monitor the verticality of the steel casing 1 before driving the steel casing 1. When the verticality of the steel casing 1 does not meet the design requirements before driving the steel casing 1, the controller is adopted to control the jack to adjust the verticality of the steel casing 1, so as to ensure that the verticality of the steel casing 1 can meet the design requirements before driving. During the process of driving the steel casing 1, the sensor 3 is adopted again to monitor the verticality of the steel casing 1. When the verticality of the steel casing 1 cannot meet the design requirements during the driving process of the steel casing 1, the controller is adopted to control the jack to adjust the verticality of the steel casing 1, so as to ensure that the verticality of the steel casing 1 can meet the design requirements during the driving process, until the driving and sinking of the steel casing 1 reaches a set elevation. The sensor 3 is adopted to re-monitor the verticality data of the steel casing 1 after driving and sends the verticality data of the steel casing 1 to the controller for recording. The method realizes the automatic monitoring of the large-diameter steel casing 1 during the driving process, and the monitoring data recording of the entire process, which improves the automation level of the construction of the steel casing 1, ensures construction precision of the steel casing 1, and improves construction efficiency. In some alternative embodiments, as shown in Figs. 2 to 4, the embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, the jack in the method comprises an upper jack 4 which is arranged on the steel casing guide frame 2 and surrounded around the steel casing 1 and a lower jack 5 which is arranged on the steel casing guide frame 2and surrounded around the steel casing 1. The steel casing guide frame 2 is a square frame structure. The upper jack 4 comprises a first jack 41 and a third jack 43 which are symmetrically arranged along the Y-axis, and a second jack 42 and a fourth jack 44 which are symmetrically arranged along the X-axis. The cylinder blocks ofthe firstjack41, the secondjack42, the third jack 43, andthe fourth jack 44 are all fixedly connected to the steel casing guide frame 2. The axis centers of the piston rods of the first jack 41, the second jack 42, the third jack 43 and the fourth jack 44 are all oriented towards the center of the steel casing guide frame 2. The lowerjack 5 comprises a fifthjack 51 and a seventh jack 53 which are symmetrically arranged along the Y-axis, and a sixth jack 52 and an eighth jack 54 which are symmetrically arranged along the X-axis. The fifth jack 51, the sixth jack 52, the seventh jack 53 and the eighth jack 54 are fixedly connected to the steel casing guide frame 2. The axis centers of the piston rods of the fifth jack 51, the sixth jack 52, the seventh jack 53 and the eighth jack 54 all oriented towards the center of the steel casing guide frame

2. In some alternative embodiments, as shown in Figs. 3 to 6, the embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction. In the method, if the inclination angle a on the X axis of the steel casing 1 is positive, it means that the steel casing 1 is inclined to the positive direction of the X-axis. The controller controls the first jack 41 and the seventh jack 53 to retract to provide movement space for rectifying a deviation of the steel casing 1. The controller controls the third jack 43 and the fifthjack 51 to synchronously push the steel casing 1 to move in the opposite direction of the X-axis, until the steel casing 1 is adjusted from the inclined position to the correction position. If the inclination angle a on the X-axis of the steel casing 1 is negative, it means that the steel casing 1 is inclined to the opposite direction of the X axis. The controller controls the third jack 43 and the fifth jack 51 to retract to provide movement space for rectifying a deviation of the steel casing 1. The controller controls the first jack 41 and the seventh jack 53 to synchronously push the steel casing 1 to move in the positive direction of the X-axis, until the steel casing 1 is adjusted from the inclined position to the correction position. If the inclination angle P on the Y-axis of the steel casing 1 is positive, it means that the steel casing 1 is inclined to the positive direction of the Y axis. The controller controls the second jack 42 and the eighth jack 54 to retract to provide movement space for rectifying a deviation of the steel casing 1. The controller controls the fourth jack 44 and the sixth jack 52 to synchronously push the steel casing 1 to move in the opposite direction of the Y-axis, until the steel casing 1 is adjusted from the inclined position to the correction position. If the inclination angle P on the Y-axis of the steel casing 1 is negative, it means that the steel casing 1 is inclined to the opposite direction of the Y axis. The controller controls the fourthjack 44 and the sixthjack 52 to retract to provide movement space for rectifying a deviation of the steel casing 1. The controller controls the second jack 42 and the eighth jack 54 to synchronously push the steel casing 1 to move in the positive direction of the Y-axis, until the steel casing 1 is adjusted from the inclined position to the correction position. The piston rods of the first jack 41, the second jack 42, the third jack 43, the fourth jack 44, the fifth jack 51, the sixthjack 52, the seventh jack 53 and the eighth jack 54 can be retracted or extended at the same time so as to improve the correction efficiency of the steel casing 1.

In some alternative embodiments, as shown in Fig. 5 and Fig. 6, the embodiment of the present invention provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction. In this method, the sensor 3 monitors the steel casing 1 with the inclination angle of a on the X-axis, and monitors the steel casing 1 with the inclination angle of on the Y-axis. A height difference between the upper jack 4 and the lower jack 5 is 2h, and a midpoint between the upper jack 4 and the lower jack 5 is taken as a center of rotation of the steel casing 1. A deviation correction displacement / of the steel casing 1 along the X-axis is I = h * tan a; and a deviation correction displacement L of the steel casing 1 along the Y-axis is L = h * tan f. If the inclination angle a on the X-axis of the steel casing 1 is positive, the controller controls the piston rods of the first jack 41 and the seventh jack 53 to retract and the displacement is at least greater than I = h * tan a. The controller controls the piston rods of the third jack 43 and the fifth jack 51 to synchronously push the steel casing 1 to move in the opposite direction of the X-axis and the displacement is at least greater than I = h * tan a. If the inclination angle a on the X-axis of the steel casing 1 is negative, the controller controls the piston rods of the third jack 43 and the fifth jack 51 to retract and the displacement is at least greater than I = h * tan a. The controller controls the piston rods of the first jack 41 and the seventh jack 53 to synchronously push the steel casing 1 to move in the positive direction of the X-axis and the displacement is at least greater than I = h * tan a. If the inclination angle P on the Y-axis of the steel casing 1 is positive, the controller controls the piston rods of the second jack 42 and the eighth jack 54 to retract and the displacement is at least greater than L = h * tan3. The controller controls the piston rods of the fourth jack 44 and the sixthjack 52 to synchronously push the steel casing 1 to move in the opposite direction of the Y-axis and the displacement is at least greater than L = h * tan .

If the inclination angle P on the Y-axis of the steel casing 1 is negative, the controller controls the piston rods of the fourth jack 44 and the sixth jack 52 to retract and the displacement is at least greater than L = h * tan . The controller controls the piston rods of the second jack 42 and the eighth jack 54 to synchronously push the steel casing 1 to move in the positive direction of the Y-axis and the displacement is at least greater than L = h * tan .

In some alternative embodiments, as shown in Fig. 5 and Fig. 6, the embodiment of the present invention provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction. The sensor 3 in the method comprises a biaxial inclinometer. The biaxial inclinometer comprises a first biaxial inclinometer and a second biaxial inclinometer, and the first biaxial inclinometer and the second biaxial inclinometer are symmetrically arranged along the X-axis or Y-axis of the steel casing 1. The first biaxial inclinometer monitors the steel casing 1 with the inclination angle of ai on the X-axis; the first biaxial inclinometer monitors the steel casing 1 with the inclination angle of Pi on the Y-axis. The second biaxial inclinometer monitors the steel casing 1 with the inclination angle of a2 on the X-axis; and the second biaxial inclinometer monitors the steel casing 1 with the inclination angleof p2on the Y-axis. The inclination angle a on the X-axis of the steel casing 1 is x = (a1 + a 2 )/2; and inclination angle P on the Y-axis of the steel casing 1 is f = (#1 + 2)/2. The first biaxial inclinometer and the second biaxial inclinometer located on both sides of the steel casing 1 are adopted to monitor the verticality information of the steel casing 1 respectively, then the average value is obtained through the inclination angles on the X-axis and the Y-axis monitored by the first biaxial inclinometer and the second biaxial inclinometer, which further improves the accuracy of monitoring the verticality of the steel casing. In some alternative embodiments, as shown in Fig. 1, the embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, which further comprises the following steps. S101. An accelerometer is installed on the steel casing I to monitor the vibration data of the steel casing 1. S102. The accelerometer is adopted to monitor the vibration data of the steel casing 1 in real time during the driving process of the steel casing 1 and sends the vibration data of the steel casing 1 to the controller. The vibration data comprises amplitude of the steel casing and vibration frequency of the steel casing. S103. The controller judges whether the vibration data of the steel casing 1 is abnormal in real time. If the amplitude of the steel casing or the vibration frequency of the steel casing exceeds a set threshold, the pile hammer stops working, if not, the pile hammer continues working. S104. After the pile hammer stops working, a water jet or a mud suction machine is adopted to remove obstructions at the bottom of the steel casing 1. S105. After the obstructions at the bottom of the steel casing 1 are removed, the pile hammer starts to continue driving the steel casing 1. The vibration data can effectively reflect the force of the steel casing 1 during the process of the driving. The amplitude of the steel casing is closely related to the footage of the driving. If the amplitude of the steel casing is abnormal, the work of pile hammer should be stopped immediately. The vibration frequency of the steel casing can reflect the state of the underground bearing layer. When the steel casing 1 passes through the hard stratum, the excitation force of the pile hammer is difficult to be transferred to the blade foot of the steel casing 1, and the vibration frequency of the steel casing becomes larger, so it is difficult to drive the casing at this time. When the vibration frequency of the steel casing is too high, some auxiliary means should be taken, such as using the water jet or the mud suction machine to remove the obstructions at the bottom of the steel casing 1, so as to ensure the driving of the steel casing 1 to the design elevation. Working Mechanism The embodiment of the present application provides a method for monitoring verticality status of driving of large-diameter steel casing in bridge pile foundation construction, the method of the present application installs a sensor 3 on a steel casing 1 to monitor verticality thereof before driving the steel casing 1, and hoists the steel casing I to a steel casing guide frame 2; and the sensor 3 is adopted to monitor verticality data of the steel casing 1 and sends the data to a controller. The controller judges whether the verticality of the steel casing 1 reaches a standard. If so, the verticality data of the steel casing 1 is recorded before driving; if not, the controller controls a jack to adjust the position of the steel casing 1. The pile hammer starts to work during the driving process of the steel casing 1, and the pile hammer is adopted to drive the steel casing 1 for performing sinking operation. The sensor 3 monitors the verticality data of the steel casing 1 and sends the data to the controller. The controller judges whether the verticality of the steel casing 1 reaches the standard in real time. If so, the pile hammer continues working; if not, the pile hammer stops working, and the controller controls the jack to adjust the position of the steel casing 1. The driving is stopped until the steel casing 1 is driven and sunk to a set elevation. The method of the present application adopts the sensor 3 to monitor the verticality of the steel casing 1 before driving the steel casing 1. When the verticality of the steel casing 1 cannot meet the design requirements before driving the steel casing 1, the controller controls the jack to adjust the verticality of the steel casing 1, so as to ensure that the verticality of the steel casing 1 can meet the design requirements before driving. During the process of driving the steel casing 1, the sensor 3 is adopted to re-monitor the verticality of the steel casing 1, when the verticality of the steel casing 1 cannot meet the design requirements during the driving process of the steel casing 1, the controller controls the jack to adjust the verticality of the steel casing 1, so as to ensure that the verticality of the steel casing 1 can meet the design requirements during the driving process, until the driving of the steel casing 1 reaches the set elevation. The method realizes the automatic monitoring of the large-diameter steel casing 1 during the driving process, and the monitoring data recording of the entire process, which improves the automation level of the construction of the steel casing 1, ensures construction precision of the steel casing 1, and improves construction efficiency. In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, instead of indicating or implying that the pointed device or element must have a specific orientation, be configured and operated in a specific orientation, therefore it cannot be understood as a limitation of the present application. Unless otherwise clearly specified and limited, the terms "installation", "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; further can be a mechanical connection, or an electrical connection; further can be directly connected, or indirectly connected through an intermediate medium, or can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above mentioned terms in the present application can be understood according to specific circumstances. It should be noted that relational terms such as "first" and "second" are only for distinguishing one entity or operation from another entity or operation in the present application, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only comprises those elements, but also comprises those that are not explicitly listed, or further comprises elements inherent to the process, method, article, or device. If there are no more restrictions, the elements defined by the sentence "comprising a..." does not exclude the existence of other same elements in the process, method, article, or device comprising the elements. The above-mentioned are only the embodiments of the present application, so that those skilled in the art can understand or implement the present application. For those skilled in the art, various modifications to these embodiments will be obvious, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown in this document, but will be subject to the widest scope consistent with the principles and novel features applied herein.

Claims (5)

1. Claims 1. A method for monitoring verticality status of driving of large diameter steel casing in bridge pile foundation construction, comprising the following steps: installing a sensor (3) on a steel casing (1) to monitor verticality thereof, and hoisting the steel casing (1) to a steel casing guide frame (2); adopting the sensor (3) to monitor verticality data of the steel casing (1) before driving the steel casing (1) and sending the data to a controller and a cloud storage; judging whether the verticality of the steel casing (1) reaches a standard by the controller, if so, recording the verticality data of the steel casing (1) before driving by the cloud storage, if not, controlling a jack to adjust the position of the steel casing (1) by the controller and returning to the previous step; starting a pile hammer for working, and adopting the pile hammer to is drive the steel casing (1) for performing sinking operation; monitoring the verticality data of the steel casing (1) in real time and sending the data to the controller by the sensor (3); judging whether the verticality of the steel casing (1) reaches the standard in real time by the controller, if so, continuing the pile hammer for working, if not, stopping the pile hammer from working, controlling thejack to adjust the position of the steel casing (1) by the controller and returning to the previous step; and stopping driving when driving and sinking the steel casing (1) to a set elevation.
2. 2. The method for monitoring verticality status of driving of large diameter steel casing in bridge pile foundation construction according to claim 1, wherein the jack comprises an upper jack (4) and a lower jack (5) which are arranged on the steel casing guide frame (2) and surrounded around the steel casing (1); the upperjack (4) comprises a firstjack (41) and a thirdjack (43) which are symmetrically arranged along the Y-axis, and a second jack (42) and a fourth jack (44) which are symmetrically arranged along the X-axis; and the lower jack (5) comprises a fifth jack (51) and a seventh jack (53) which are symmetrically arranged along the Y-axis, and a sixth jack (52) and an eighth jack (54) which are symmetrically arranged along the X-axis.
3. 3. The method for monitoring verticality status of driving of large diameter steel casing in bridge pile foundation construction according to claim 2, wherein if an inclination angle a on the X-axis of the steel casing (1) is positive, the controller controls the firstjack (41) and the seventhjack (53) to retract, and controls the third jack (43) and the fifth jack (51) to push the steel casing (1) synchronously; if the inclination angle a on the X-axis of the steel casing (1) is negative, the controller controls the third jack (43) and the fifth jack (51) to retract, and controls the first jack (41) and the seventh jack (53) to push the steel casing (1) synchronously; if an inclination angle P on the Y-axis of the steel casing (1) is positive, the controller controls the second jack (42) and the eighth jack (54) to retract, is and controls the fourth jack (44) and the sixth jack (52) to push the steel casing (1) synchronously; and if the inclination angle P on the Y-axis of the steel casing (1) is negative, the controller controls the fourth jack (44) and the sixth jack (52) to retract, and controls the second jack (42) and the eighth jack (54) to push the steel casing (1) synchronously.
4. 4. The method for monitoring verticality status of driving of large diameter steel casing in bridge pile foundation construction according to claim 2, wherein the sensor (3) monitors the steel casing (1) with an inclination angle of a on the X-axis, and monitors the steel casing (1) with an inclination angle of P on the Y-axis; a height difference between the upper jack (4) and the lower jack (5) is 2h, and a midpoint between the upper jack (4) and the lower jack (5) is taken as a center of rotation of the steel casing (1); a deviation correction displacement of the steel casing (1) along the X-axis is I = h * tan a; and a deviation correction displacement L of the steel casing (1) along the Y-axis is L = h * tan f.
5. 5. The method for monitoring verticality status of driving of large diameter steel casing in bridge pile foundation construction according to claim 4, wherein the sensor (3) comprises a biaxial inclinometer, wherein the biaxial inclinometer comprises a first biaxial inclinometer and a second biaxial inclinometer, and the first biaxial inclinometer and the second biaxial inclinometer are symmetrically arranged along the X-axis or Y-axis of the steel casing (1); the first biaxial inclinometer monitors the steel casing (1) with the inclination angle of ai on the X-axis; and the first biaxial inclinometer monitors the steel casing (1) with the inclination angle of Pi on the Y-axis; the second biaxial inclinometer monitors the steel casing (1) with the inclination angle of a2 on the X-axis; and the second biaxial inclinometer monitors the steel casing (1) with the inclination angle of P2 on the Y-axis; the inclination angle a on the X-axis of the steel casing (1) is a= (a 1 + a 2 )/2; and inclination angle P on the Y-axis of the steel casing (1) is f = (A + 2)/2; and a water jet or a mud suction machine is adopted to remove obstructions at the bottom of the steel casing (1).