CN111501860A - Foundation pit enclosure deformation control device and system - Google Patents
Foundation pit enclosure deformation control device and system Download PDFInfo
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- CN111501860A CN111501860A CN202010326614.4A CN202010326614A CN111501860A CN 111501860 A CN111501860 A CN 111501860A CN 202010326614 A CN202010326614 A CN 202010326614A CN 111501860 A CN111501860 A CN 111501860A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The embodiment of the invention discloses a foundation pit enclosure deformation control device and system. The foundation pit enclosure deformation control device comprises a parameter acquisition module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclination measuring point, and the current parameter information comprises all inclination measuring values on the current inclination measuring point and the current excavation depth of a soil body corresponding to the current inclination measuring point; and the control module is used for determining the current inclination measuring point as the inclination measuring point to be adjusted according to the current parameter information and determining the inclination measuring point to be adjusted as the deformation control index standard exceeding or the rheological control is required. Through the technical scheme of the invention, the determination of the inclination measuring point to be adjusted required by accurately balancing the deformation of the foundation pit is realized, the connection between the deformation of the foundation pit and the supporting axial force of the support is conveniently established, and the requirement of accurately controlling the enclosure deformation is further met.
Description
Technical Field
The embodiment of the invention relates to the technical field of foundation pit engineering, in particular to a foundation pit enclosure deformation control device and system.
Background
The foundation pit refers to a space below the ground excavated for the construction of a building foundation or basement, wherein the requirement for environmental protection in the foundation pit construction process is remarkably increased particularly along with the deep development of the space in a soft soil region.
The traditional steel support system cannot achieve the aim of controlling the deformation of the foundation pit because the corresponding enclosure structure is difficult to repeatedly adjust, so that the steel support system is produced at the same time. The existing steel support system mainly statically and singly performs foundation pit deformation control only by taking the axial force borne by the steel support as a target, no connection is established between the support axial force and the displacement of the enclosure structure, and the calculation result and the actual measurement result have large difference in consideration of the fact that the mechanical model of the foundation pit is difficult to be consistent with the practical state in practice, so that the actual support needs to be adjusted according to the deformation of the enclosure structure, and the requirement for accurately controlling the deformation of the enclosure structure is met.
Disclosure of Invention
The embodiment of the invention provides a foundation pit bracing deformation control device, which is used for determining an inclinometry point to be adjusted, which is required by accurately balancing foundation pit deformation, so that the requirement of bracing deformation accurate control is met.
In a first aspect, an embodiment of the present invention provides a foundation pit bracing deformation control device, where the foundation pit bracing deformation control device includes:
the system comprises a parameter acquisition module, a data processing module and a data processing module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclination measuring point, and the current parameter information comprises all inclination measuring values on the current inclination measuring point and the current excavation depth of a soil body corresponding to the current inclination measuring point;
and the control module is used for determining the current inclination measuring point as the inclination measuring point to be adjusted according to the current parameter information and determining the inclination measuring point to be adjusted as the deformation control index standard exceeding or the rheological control is required.
Optionally, the determining, by the control module, that the current inclinometer is the to-be-adjusted inclinometer according to the current parameter information, and that the to-be-adjusted inclinometer is the deformation control index exceeding the standard or the rheological control is required by the control module includes:
acquiring the maximum inclinometry value in all the inclinometry values at the current inclinometry point;
if the soil depth corresponding to the maximum inclination measurement value is above the excavation surface and the maximum value of the change rate of the maximum inclination measurement value exceeds a preset value, determining that the inclination measurement point to be adjusted needs to be subjected to rheological control; the excavation surface is the excavation surface at the current excavation depth of the soil body corresponding to the current inclination measuring point;
and if the soil body depth corresponding to the maximum inclinometry value is not positioned above the excavation surface and the maximum inclinometry value is greater than the preset inclinometry value under the current excavation depth corresponding to the current inclinometry value, determining that the inclinometry point to be adjusted is the standard exceeding of the deformation control index.
Optionally, the control module is further configured to: the control parameter acquisition module acquires the current parameter information of all the inclination measuring points one by one, determines all inclination measuring points to be adjusted in all the inclination measuring points, and determines that the inclination measuring points to be adjusted exceed the standard of a deformation control index or need to perform rheological control.
Optionally, the foundation pit enclosure deformation control device further includes:
a policy output module to: and outputting information of a support which is corresponding to the recommended adjustment distance to the inclinometry point to be adjusted and is closest to the excavation surface to the current inclinometry point, wherein the deformation index of the inclination point exceeds the standard or the inclination point to be adjusted needs to be subjected to rheological control.
Optionally, the policy output module is further configured to:
and if the current inclinometry point is that the deformation index exceeds the standard, and the supporting axial force of the support closest to the excavation surface corresponding to the inclinometry point to be adjusted reaches the maximum limit value, or when the layer inclinometry value is a negative value, outputting information suggesting to adjust the previous support of the support.
Optionally, the control module is further configured to: and after the supports corresponding to all the inclinometry points to be adjusted are adjusted for the preset time, updating the inclinometry points to be adjusted, and controlling the strategy output module to output the suggestion information corresponding to the inclinometry points to be adjusted.
In a second aspect, an embodiment of the present invention further provides a foundation pit bracing deformation control system, where the foundation pit bracing deformation control system includes:
each inclination measuring rod comprises a plurality of inclination measuring sensors, each inclination measuring rod corresponds to one inclination measuring point, and each inclination measuring sensor is used for acquiring an inclination measuring value;
the foundation pit enclosure deformation control device comprises a parameter acquisition module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclinometry point, the current parameter information comprises all inclinometry values on the current inclinometry point and the current excavation depth of a soil body corresponding to the current inclinometry point, and the control module is used for determining the current inclinometry point as an inclinometry point to be adjusted according to the current parameter information and determining the inclinometry point to be adjusted as a deformation control index exceeding the standard or needing rheological control.
Optionally, the foundation pit enclosure deformation control device further includes:
a policy output module to: outputting the information of a support closest to the excavation surface corresponding to the proposed adjustment distance to-be-adjusted inclinometry point when the current inclinometry point exceeds the standard or rheological control is required;
the foundation pit enclosure deformation control system further comprises:
the device comprises a plurality of supports, a plurality of positioning devices and a plurality of positioning devices, wherein each support comprises a plurality of support structures, and each support structure corresponds to one inclination measuring point; and the axial force adjusting device is used for adjusting the axial force of the corresponding supporting structure according to the information output by the strategy output module.
Optionally, the axial force adjustment device comprises a plurality of jacks, and the plurality of jacks correspond to the plurality of support structures one to one.
Optionally, the foundation pit enclosure deformation control system further includes:
and the input device is connected with the foundation pit enclosure deformation control device and is used for inputting the initial parameters of the foundation pit enclosure deformation control device.
According to the foundation pit enclosure deformation control device provided by the embodiment of the invention, the current parameter information of the current inclinometry point in the enclosure is utilized, wherein the current parameter information comprises all inclinometry values on the current inclinometry point and the current excavation depth of a soil body corresponding to the current inclinometry point, then, the current inclinometry point is determined to be an inclinometry point to be adjusted according to the current parameter information, and the inclinometry point to be adjusted is determined to be the deformation control index exceeding the standard or the rheological control is required to be carried out; the support required to be adjusted is determined from the deformation of the enclosure, the problem that the actual support needs to be adjusted is difficult to accurately determine aiming at the deformation of the enclosure in the existing steel support system technology is solved, the determination of the inclination measuring point to be adjusted required by accurately balancing the deformation of the foundation pit is realized, and meanwhile, the determination of the inclination measuring point to be adjusted is convenient for establishing the relation between the deformation of the foundation pit and the supporting axial force of the support, so that the requirement of accurate control of the deformation of the enclosure is met.
Drawings
Fig. 1 is a schematic structural diagram of a foundation pit enclosure deformation control device provided in an embodiment of the present invention;
fig. 2 is a flowchart of a control process for deformation of a foundation pit support according to an embodiment of the present invention;
fig. 3 is a schematic structural view of another foundation pit bracing deformation control device provided in the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a foundation pit support deformation control system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
The foundation pit support deformation control device provided by the embodiment of the invention can be suitable for a deep construction foundation pit in a soft soil area to control support deformation in the construction process, for example, can be suitable for a deep foundation pit constructed in a subway in the soft soil area to control support deformation in the construction process. Fig. 1 is a schematic structural diagram of a foundation pit enclosure deformation control device provided in an embodiment of the present invention, and as shown in fig. 1, the foundation pit enclosure deformation control device includes:
the system comprises a parameter obtaining module 10, wherein the parameter obtaining module 10 is used for obtaining current parameter information of a current inclinometry point, and the current parameter information comprises all inclinometry values on the current inclinometry point and the current excavation depth of a soil body corresponding to the current inclinometry point;
and the control module 20 is used for determining the current inclination measuring point as the inclination measuring point to be adjusted according to the current parameter information and determining the inclination measuring point to be adjusted as the deformation control index exceeding the standard or needing to perform rheological control.
Specifically, the target shape and the target depth of the foundation pit are confirmed at the target construction site according to the construction scheme of the engineering personnel. In the process of digging the depth of the foundation pit to the target depth, the foundation pit can deform due to factors such as surrounding buildings or surrounding geology, and the deformation can affect the construction quality and also affect the safety of the surrounding buildings or the surrounding environment. Therefore, the enclosure and the support are required to be built around the target shape of the foundation pit, and the support plays a supporting role on the enclosure through the self-supporting axial force, so that the deformation of the enclosure is balanced, and the surrounding building and the environment are protected.
In the embodiment of the invention, after building a support and a support around the target shape of the foundation pit, a plurality of inclination measuring points are drilled in the soil body in the support, the depth of the inclination measuring points can be deeper than that of the foundation pit, illustratively, the target depth of the foundation pit is 50 meters, 8 inclination measuring points are drilled in the soil body in the support, the inclination measuring points are distributed along the target shape of the foundation pit, and the depth of each inclination measuring point is 100 meters. Besides being helpful for visually observing the deformation of the foundation pit, the inclination measuring points have different inclination measuring values of the deformation of the foundation pit corresponding to different soil body depths of the inclination measuring points, therefore, each inclination measuring point can have a plurality of inclination measuring values at the same moment, the inclination measuring values correspond to the deformation of the foundation pit, the numerical value of the inclination measuring values reflects the deformation degree of the foundation pit, the larger the numerical value of the inclination measuring values is, the larger the deformation of the foundation pit is, and the inclination measuring values can correspond to the deformation of the foundation pit one by one.
The parameter obtaining module 10 obtains current parameter information of a current inclinometry point, where the current parameter information includes a plurality of inclinometry values of the current inclinometry point and includes a current excavation depth of a soil body corresponding to the current inclinometry point. For example, in the process of digging the depth of the foundation pit to the target depth, any one of 8 inclinometry points is regarded as a current inclinometry point, the current inclinometry point has a plurality of inclinometry values, and the current digging depth of the soil body corresponding to the current inclinometry point is 15 meters away from the target depth by 35 meters. It should be noted that, in this embodiment, the specific number of the obtained inclinometer values of the current inclinometer point is not limited.
The control module 20 determines whether the current inclinometry point is the inclinometry point to be adjusted or not and determines that the inclinometry point to be adjusted is the deformation control index exceeding the standard or the rheological control is required according to the current parameter information of the current inclinometry point, namely, according to a plurality of inclinometry values of the current inclinometry point and the current excavation depth of the soil body corresponding to the current inclinometry point. Based on the above description, the inclination measurement value corresponds to the deformation of the foundation pit, that is, the control module 20 determines whether the current inclination measurement point is the inclination measurement point to be adjusted according to the deformation of the foundation pit corresponding to the inclination measurement value of the current inclination measurement point and according to the current excavation depth of the soil body corresponding to the current inclination measurement point. Like this, utilize the deviational survey value of deviational survey point, set out from actual foundation ditch deformation, determine that need carry out the adjustment deviational survey point of treating that adjusts to its foundation ditch deformation that corresponds, later only need treat the adjustment deviational survey point and adjust, just can realize the balance of foundation ditch deformation accurately. Compared with the prior art, the method has the advantages that the deformation control of the foundation pit is statically and singly carried out only by taking the axial force which is just supported in the mechanical model as a target, the inclination measuring point to be adjusted is determined according to the adjustment requirement of the actual deformation of the foundation pit, and the method is more targeted and more accurate in the balance of the deformation of the foundation pit or the deformation control of the foundation pit. The foundation pit deformation can be vertical displacement deformation and horizontal displacement deformation, and the foundation pit deformation in the embodiment mainly aims at the horizontal displacement deformation.
In addition, the balance of the foundation pit deformation is realized by the enclosure deformation through the above description, and the enclosure deformation can be realized by the support axial force of the support, so that the balance of the foundation pit deformation can be accurately realized only by adjusting the support axial force of the support corresponding to the inclination measuring point to be adjusted after the inclination measuring point required to be adjusted for the balance of the foundation pit deformation is accurately determined.
In summary, the foundation pit support deformation control device provided in the embodiment of the present invention utilizes the inclination measuring point, obtains the current parameter information of the current inclination measuring point through the parameter obtaining module, and determines the inclination measuring point to be adjusted, which is required for accurately balancing the deformation of the foundation pit, through the control module according to the current parameter information of the current inclination measuring point.
Fig. 2 is a flowchart of a deformation control method for a foundation pit enclosure according to an embodiment of the present invention, and with reference to fig. 1 and fig. 2, optionally, the determining, by the control module 20, that a current inclinometry point is an inclinometry point to be adjusted according to current parameter information, and determining that the inclinometry point to be adjusted is that a deformation control index exceeds a standard or a rheological control is required to be performed includes:
acquiring the maximum inclinometry value in all the inclinometry values at the current inclinometry point;
if the soil depth corresponding to the maximum inclination measurement value is above the excavation surface and the maximum value of the change rate of the maximum inclination measurement value exceeds a preset value, determining that the inclination measurement point to be adjusted needs to be subjected to rheological control; the excavation surface is the excavation surface at the current excavation depth of the soil body corresponding to the current inclination measuring point;
and if the soil body depth corresponding to the maximum inclination measurement value is not positioned above the excavation surface and the maximum inclination measurement value is greater than the inclination measurement preset value under the current excavation depth of the soil body, determining that the inclination measurement point to be adjusted exceeds the standard of the deformation control index.
Specifically, the control module 20 obtains a maximum inclinometry value from a plurality of inclinometry values of the current inclinometry point, where the maximum inclinometry value of the current inclinometry point corresponds to a soil depth at the maximum foundation pit deformation position. The control module 20 determines whether the soil depth corresponding to the maximum inclinometry value of the current inclinometry point is above the excavation surface, and if the soil depth corresponding to the maximum inclinometry value is above the excavation surface, continues to determine whether the maximum value of the variation rate of the maximum inclinometry value exceeds a preset value, and if the maximum value of the variation rate of the maximum inclinometry value exceeds the preset value, determines that the inclinometry point to be adjusted needs to be subjected to rheological control, and if the maximum value of the variation rate of the maximum inclinometry value does not exceed the preset value. That is, when the control module 20 determines that the soil depth corresponding to the maximum inclinometry value of the current inclinometry point is above the excavation surface, the maximum inclinometry value can change rapidly in a short time and has a change rate, and if the maximum change rate of the change rate is continuously determined to exceed a preset value, it is determined that the inclinometry point to be adjusted needs to be subjected to rheological control. The specific value of the preset value can be set according to actual needs.
And if the soil body depth corresponding to the maximum inclinometry value of the current inclinometry point is not above the excavation surface, continuously judging whether the maximum inclinometry value is greater than an inclinometry preset value under the current excavation depth of the soil body, if so, determining that the inclinometry point to be adjusted is the standard exceeding of the deformation control index, and if not, determining that the current inclinometry point is not the standard exceeding of the deformation control index. The method comprises the steps that an inclinometry preset value is preset under the current excavation depth of a soil body corresponding to a current inclinometry point, the maximum inclinometry value is represented when the maximum inclinometry value is not more than the inclinometry preset value, the construction quality can be guaranteed even if the deformation of a foundation pit at the depth of the soil body corresponding to the maximum inclinometry value of the current inclinometry point is not required to be adjusted, the maximum inclinometry value is represented when the maximum inclinometry value exceeds the inclinometry preset value, the construction quality can be guaranteed only if the deformation of the foundation pit at the depth of the soil body corresponding to the maximum inclinometry value of the current inclinometry point is required to be balanced, the current. The preset value of the inclination survey can be set according to the current excavation depth of the soil body or the excavation layer number corresponding to the current excavation depth of the soil body, and the size of the preset value is predicted to be several times of the current excavation depth value of the soil body.
Optionally, the control module 20 is further configured to: the control parameter obtaining module 10 obtains current parameter information of all the inclinometers one by one, determines all the inclinometers to be adjusted in all the inclinometers, and determines that the inclinometers to be adjusted exceed the deformation control index or need to perform rheological control.
Specifically, in the example of the above technical solution, any one of 8 inclinometry points is regarded as a current inclinometry point, the control module 20 controls the parameter obtaining module 10 to obtain current parameter information of the current inclinometry point, and determines whether the current parameter information of the current inclinometry point is an inclinometry point to be adjusted or not according to the current parameter information of the current inclinometry point, and determines that the inclinometry point to be adjusted is that a deformation control index exceeds a standard or a rheological control is required. In the embodiment of the present invention, the control module 20 is further configured to control the parameter obtaining module 10 to obtain current parameter information of all the inclinometers except the current inclinometer, that is, the control parameter module obtains current parameter information of the remaining 7 inclinometers, and determines whether the current parameter information is an inclinometer to be adjusted according to the current parameter information of each inclinometer, and determines whether the inclinometer to be adjusted is a deformation control index exceeding the standard or a rheology control is required, so as to ensure and facilitate control of the whole enclosure deformation.
In addition, in the process of excavating the depth of the foundation pit to the target depth, a layered excavation method may be adopted, for example, the target depth of the foundation pit with the target depth of 50 meters is divided into a final excavation surface with the target depth of 10 meters at the first layer, 10 meters at the second layer, 15 meters at the third layer and 15 meters at the fourth layer from the initial ground excavation starting point. Before digging a layer, determining the inclination measuring points to be adjusted in all the inclination measuring points once, and determining the inclination measuring points to be adjusted as the deformation control indexes exceed the standard or the rheology control is required. For example, before digging a second layer, the inclinometry points to be adjusted determined in the 8 inclinometry points are the 1 st, the 2 nd and the 4 th inclinometry points, wherein the 1 st and the 2 nd inclinometry points are the standard exceeding of the deformation control index, and the 4 th inclinometry point needs to be subjected to rheological control; before digging the third layer, the inclinometer points to be adjusted determined in the 8 inclinometer points can be the 3 rd, the 2 nd and the 5 th inclinometer points, wherein the 3 rd and the 2 nd inclinometer points need to be subjected to rheological control, and the 5 th inclinometer point is the standard exceeding of the deformation control index.
Fig. 3 is a schematic structural diagram of another foundation pit bracing deformation control device provided in an embodiment of the present invention, and as shown in fig. 3, optionally, the foundation pit bracing deformation control device further includes:
a policy output module 30, the policy output module 30 being configured to: and outputting information of a support which is corresponding to the recommended adjustment distance to the inclination measuring point to be adjusted and is closest to the excavation surface.
Specifically, with reference to fig. 2 and fig. 3, after the to-be-adjusted inclination measuring points for accurately balancing the deformation of the foundation pit are determined based on the above technical solution, the embodiment of the present invention further utilizes the policy output module 30 to output corresponding proposed adjustment information for each to-be-adjusted inclination measuring point. Before each layer is excavated, besides the structure of the enclosure along the depth direction of the target, the support of each layer is correspondingly built, and it can be understood that one layer of the excavated layer corresponds to one support, namely, the first layer of the excavated layer corresponds to the first support, the second layer of the excavated layer corresponds to the second support, the third layer of the excavated layer corresponds to the third support, and the fourth layer of the excavated layer corresponds to the fourth support. Illustratively, before the fourth layer is excavated and after a fourth support corresponding to the fourth layer is built, the current inclinometry point determined from the 8 inclinometry points is an inclinometry point to be adjusted, the deformation index of which exceeds the standard or the rheology control needs to be carried out, and information of a support which is closest to the excavation surface and corresponding to the inclinometry point to be adjusted is output, namely information of the fourth support corresponding to the inclinometry point to be adjusted is output and suggested to be adjusted.
Optionally, with continued reference to fig. 2, the policy output module 30 is further configured to: and if the current inclinometry point is that the deformation index exceeds the standard, and the supporting axial force of the support closest to the excavation surface corresponding to the inclinometry point to be adjusted reaches the maximum limit value, or when the layer inclinometry value is a negative value, outputting information suggesting to adjust the previous support of the support.
Specifically, based on the above technical solution, after the policy output module 30 outputs the information that the adjustment is recommended to the nearest one of the supports to the excavation surface corresponding to the inclinometer to be adjusted, the control module 20 determines the axial force of the support to the nearest one of the supports to the excavation surface corresponding to the inclinometer to be adjusted, and determines whether the inclinometer value of the current-layer inclinometer point is positive or negative. The maximum limit value of the axial force of each support can be preset, and the maximum limit value of the axial force of each support is the maximum axial force which can be borne by each support. The inclination measurement value is positive, which indicates that the deformation of the foundation pit at the corresponding depth is translated towards the inner side of the foundation pit, and the translation towards the inner side of the foundation pit can be translated towards the outer side of the foundation pit by adjusting the deformation of the enclosure to balance the foundation pit. The inclination measurement value is a negative number, which indicates that the deformation of the foundation pit at the corresponding depth is towards the outer side of the foundation pit in a translation mode, and at the moment, the translation of the soil body towards the outer side of the foundation pit cannot be reversely recovered through the enclosure deformation, and meanwhile, the soil body cannot be continuously translated towards the outer side of the foundation pit through the enclosure deformation. Therefore, no matter the supporting shaft force of each support reaches the maximum limit value, or when the inclination measuring value of the layer inclination measuring point is a negative value, the supporting shaft force of the support in the current path cannot be adjusted.
Based on the above basic principle, after the determined current inclinometry point is the inclinometry point to be adjusted with the deformation index exceeding the standard or needing the rheological control, before the strategy output module 30 outputs the information of the closest support to the excavation surface corresponding to the recommended adjustment distance to the inclinometry point to be adjusted, the control module 20 firstly judges the determined inclinometry point to be adjusted so as to adjust the inclinometry point to be adjusted with the deformation index exceeding the standard or needing the rheological control in different modes. Or, as shown in fig. 2, after the strategy output module 30 outputs the information of the closest support to the excavation surface corresponding to the proposed adjustment distance to the inclinometer to be adjusted, the adjustment of the inclinometer to be adjusted with the deformation index exceeding the standard or requiring the rheological control in different manners is directly performed.
If the current inclination measuring point is that the deformation index exceeds the standard, the control module 20 judges that the supporting axial force of the support closest to the excavation surface corresponding to the inclination measuring point to be adjusted reaches the maximum limit value, or outputs information suggesting to adjust the previous support of the support when the inclination measuring value of the layer inclination measuring point is a negative value. Exemplarily, before a fourth layer is excavated, a fourth support corresponding to the fourth layer is built, a current inclinometry point determined from 8 inclinometry points is an inclinometry point to be adjusted, where a deformation index exceeds a standard or rheological control needs to be performed, after the strategy output module 30 outputs information of the fourth support corresponding to the inclinometry point to be adjusted, the control module 20 judges that the axial force of the fourth support does not reach a maximum limit value, and the inclinometry value of the fourth layer is not a negative value, the strategy output module 30 outputs information of the current support for suggesting adjustment, that is, information of the fourth support for suggesting adjustment is output, the control module 20 judges that the axial force of the fourth support reaches the maximum limit value, or the inclinometry value of the fourth layer is a negative value, and the strategy output module 30 outputs information of suggesting adjustment of the third support. Alternatively, as shown in fig. 2, after the strategy output module 30 outputs the information suggesting adjustment of the third support, the control module 20 continues to determine whether the axial force reaches the maximum limit value or the inclinometer value is negative, that is, if the control module 20 continues to determine that the axial force of the third support reaches the maximum limit value or the inclinometer value of the third layer of the inclinometer point is negative, the strategy output module 30 outputs the information suggesting adjustment of the second support. And optionally, after the policy output module 30 outputs the information suggesting adjustment of the second support, the control module 20 continues to determine whether the axial force reaches the maximum limit value or the inclinometer value is a negative value, that is, if the control module 20 continues to determine that the axial force of the second support reaches the maximum limit value or the inclinometer value of the second-layer inclinometer point is a negative value, the policy output module 30 outputs the information suggesting no adjustment. That is, when none of the three consecutive supports can be adjusted, the policy output module 30 outputs a suggestion for no adjustment, and can perform adjustment information of the next inclinometer point to be adjusted, and determine that the adjustment of the inclinometer point to be adjusted is completed.
After the strategy output module 30 outputs the information for suggesting adjustment of the current support, the support axial force of the support corresponding to the inclinometer to be adjusted can be adjusted according to the information. The corresponding relation between the inclination measuring point and the support can be established when the support is established on the enclosure, and after the establishment is finished, the inclination measuring point and the support are input into the control module 20 for storage.
If the current inclinometer point needs to be subjected to rheological control, the control module 20 judges that the supporting axial force of the support closest to the excavated surface and corresponding to the inclinometer point to be adjusted reaches the maximum limit value, or when the inclinometer value of the layer inclinometer point is a negative value, the control module outputs a suggestion to be not adjusted, can perform adjustment information of the next inclinometer point to be adjusted, and can determine that the adjustment of the inclinometer point to be adjusted is finished.
And finally, according to the method for adjusting the inclination measuring points to be adjusted, which have the deformation indexes exceeding the standard or need to be subjected to rheological control, adjusting all the inclination measuring points to be adjusted one by one to complete the control of the whole enclosure deformation.
Optionally, when each to-be-adjusted inclinometer point is adjusted, the control module 20 determines the final adjustment state of the to-be-adjusted inclinometer point, which may be a final support axial force of the support corresponding to the to-be-adjusted inclinometer point. Optionally, after confirming the final adjustment state of the inclinometer point to be adjusted, the control module 20 further performs feedback compensation on the confirmed final adjustment state of the inclinometer point to be adjusted, which may be performing feedback compensation on the final support axial force of the support corresponding to the inclinometer point to be adjusted. The feedback compensation means that in the construction process after the final adjustment state of the inclinometer to be adjusted is confirmed and in the process of adjusting the inclinometer to be adjusted of other excavation layers, the adjusted support is influenced by coherence, so that the confirmed support axial force of the adjusted support floats up and down near the confirmed value. And performing feedback compensation, namely performing feedback compensation on the up-and-down fluctuation of the confirmed supporting shaft force of the support near the confirmed value, so that the confirmed supporting shaft force is always maintained at the confirmed value, and the influence of coherence is avoided. When the next adjustment is made to the track of supports, the control module 20 will cancel the feedback compensation until it is again provided after confirmation of its adjustment and final adjustment state is completed, such that the feedback compensation to its support axis force is cancelled when each track of supports is adjusted, and the compensation to its support axis force is maintained when adjustment is completed and not made.
Optionally, the control module 20 is further configured to: after all the supports corresponding to the inclinometer to be adjusted are adjusted for the preset time, the inclinometer to be adjusted is updated, and the strategy output module 30 is controlled to output the recommendation information corresponding to the inclinometer to be adjusted.
Specifically, all supports corresponding to the inclinometer to be adjusted on any excavation layer are adjusted, one round of adjustment is completed, and the preset time is set, so that after the preset time, the inclinometer to be adjusted is updated, and the next round of adjustment is performed by using the judgment and adjustment mode of the inclinometer to be adjusted in the technical scheme. The inclination measuring points to be adjusted determined in each round of adjustment can be different, and each excavation layer is specifically subjected to several rounds of adjustment and can be set according to actual needs. The preset time can be one or more time intervals, the intervals can be any time period between 1 hour and 24 hours, illustratively, the preset time is set to be 6 hours or 12 hours or 24 hours, namely after the previous round of adjustment is finished, after 6 hours or 12 hours or 24 hours, the foundation pit enclosure deformation control device automatically performs the next round of adjustment, and the next round of adjustment can include updating of the inclination measuring point to be adjusted and outputting suggestion information corresponding to the inclination measuring point to be adjusted.
Corresponding to the foundation pit enclosure deformation control device in the technical scheme, the embodiment of the invention also provides a foundation pit enclosure deformation control system, and the foundation pit enclosure deformation control system provided by the embodiment of the invention can comprise any foundation pit enclosure deformation control device in the technical scheme, so that the same technical effect as the foundation pit enclosure deformation control device can be achieved, and repeated contents are not repeated here. This foundation pit enclosure warp control system includes:
each inclination measuring rod comprises a plurality of inclination measuring sensors, each inclination measuring rod corresponds to one inclination measuring point, and each inclination measuring sensor is used for acquiring an inclination measuring value;
the foundation pit enclosure deformation control device comprises a parameter acquisition module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclinometry point, the current parameter information comprises all inclinometry values on the current inclinometry point and the current excavation depth of a soil body corresponding to the current inclinometry point, and the control module is used for determining the current inclinometry point as an inclinometry point to be adjusted according to the current parameter information and determining the inclinometry point to be adjusted as a deformation control index exceeding the standard or needing rheological control.
Specifically, an inclination measuring rod can be arranged in each inclination measuring point, inclination measuring sensors are arranged on the inclination measuring rods corresponding to different depths of the soil body, and inclination measuring values at different depths of the soil body are measured by the inclination measuring sensors.
The parameter obtaining module obtains a plurality of inclination measuring values of the current inclination measuring point and also obtains a current soil excavation depth value corresponding to the current inclination measuring point. The parameter acquisition module can be arranged in the control module, and the control module can be arranged in a terminal such as a computer with the functions of display, storage, calculation and the like. Optionally, the foundation pit enclosure deformation control device further includes:
a policy output module to: if the current inclination measuring point needs to be subjected to rheological control, outputting information for suggesting adjustment of the last support of the excavation face; if the current inclinometry point is that the deformation index exceeds the standard or rheological control is required, outputting information of a support closest to the excavation surface corresponding to the adjustment distance to be adjusted;
the foundation pit enclosure deformation control system further comprises:
the device comprises a plurality of supports, a plurality of positioning devices and a plurality of positioning devices, wherein each support comprises a plurality of support structures, and each support structure corresponds to one inclination measuring point; and the axial force adjusting device is used for adjusting the axial force of the corresponding supporting structure according to the information output by the strategy output module.
Specifically, each excavation layer corresponds there is a support, and each support includes many bearing structure, and bearing structure is for example steel shotcrete, when the bearing structure of each support is built, can be simultaneously with every bearing structure and deviational survey point between establish corresponding relation, can be similar relation such as numerical value table, can also be that a deviational survey corresponds many bearing structure.
After the inclination measuring points to be adjusted of each layer of the excavation layer are determined, the supporting shaft force of the corresponding supporting structure is adjusted through the shaft force adjusting device according to the corresponding relation between the inclination measuring points to be adjusted and the supporting structure, the change of the inclination can be observed while the supporting shaft force is adjusted until the inclination measuring values are adjusted to be values meeting the requirements, the final state of the inclination measuring points to be adjusted is determined, the final supporting shaft force is confirmed, and finally feedback compensation is provided for the final supporting shaft force. And when the previous support is adjusted on the current inclination measuring point, the support axial force of the corresponding support structure supporting the current inclination measuring point can be adjusted. In addition, the numerical value of the supporting shaft force can be obtained by arranging a sensor on the support.
Optionally, the axial force adjustment device comprises a plurality of jacks, and the plurality of jacks correspond to the plurality of support structures one to one. Specifically, after the strategy output module outputs the suggested adjustment information, the control module adjusts the supporting axial force of the supporting structure by controlling the jack according to the suggested adjustment information.
Optionally, the foundation pit enclosure deformation control system further includes: and the input device is connected with the foundation pit enclosure deformation control device and is used for inputting the initial parameters of the foundation pit enclosure deformation control device. Specifically, a simulation model is established for the foundation pit while the target shape and the target depth of the foundation pit are confirmed according to a construction scheme of engineering personnel, and initial parameters are set for enclosure, support and the like of the foundation pit through an input device according to the simulation model or an inclination measurement value, wherein the initial parameters can comprise an initial axial force value of a support structure, a preset value of a deformation rate corresponding to a maximum inclination measurement value, a preset inclination measurement value corresponding to the maximum inclination measurement value, a corresponding relation between the inclination measurement point and the support structure, preset time during multi-wheel adjustment and the like. And in the process of adjusting the inclinometer point to be adjusted, the input device is utilized to input the supporting shaft force of the supporting structure, confirm the final adjusting state of the inclinometer point to be adjusted, feed back compensation confirmation and the like.
Exemplarily, fig. 4 is a schematic structural diagram of a foundation pit support deformation control system according to an embodiment of the present invention, and as shown in fig. 4, the foundation pit support deformation control system includes a foundation pit support deformation control device, an input device, a support 40, an inclination measuring point 50, a support structure 60, and an axial force adjusting device 70.
In summary, the foundation pit support deformation control system provided in the embodiment of the present invention inputs the initial parameters of the foundation pit support deformation control device through the input device, and determines the to-be-adjusted inclination measuring point to be adjusted for balancing the deformation of the foundation pit based on the inclination measuring value of the inclination measuring point and the current excavation depth value of the soil body by using the foundation pit support deformation control device, so as to determine the support to be adjusted for balancing the deformation of the foundation pit, and then adjusts the support axial force of the support by using the jack, so as to realize the control of the foundation pit support deformation, thereby realizing the accurate support deformation required for balancing the deformation of the foundation pit.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a foundation pit enclosure warp controlling means which characterized in that, foundation pit enclosure warp controlling means includes:
the system comprises a parameter acquisition module, a data processing module and a data processing module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclination measuring point, and the current parameter information comprises all inclination measuring values on the current inclination measuring point and the current excavation depth of a soil body corresponding to the current inclination measuring point;
and the control module is used for determining the current inclination measuring point as an inclination measuring point to be adjusted according to the current parameter information and determining the inclination measuring point to be adjusted as the deformation control index exceeding the standard or needing to perform rheological control.
2. The foundation pit support deformation control device of claim 1, wherein the control module determines the current inclination measuring point as an inclination measuring point to be adjusted according to the current parameter information, and the determination that the inclination measuring point to be adjusted is that a deformation control index exceeds a standard or rheological control is required comprises:
acquiring the maximum inclinometry value in all the inclinometry values on the current inclinometry point;
if the soil body depth corresponding to the maximum inclinometry value is above the excavation surface, and the maximum value of the change rate of the maximum inclinometry value exceeds a preset value, determining that the inclinometry point to be adjusted needs to be subjected to rheological control; the excavation surface is the excavation surface at the current excavation depth of the soil body corresponding to the current inclination measuring point;
and if the soil body depth corresponding to the maximum inclinometry value is not higher than the excavation surface and the maximum inclinometry value is larger than the inclinometry preset value under the current excavation depth corresponding to the current inclinometry value, determining that the inclinometry point to be adjusted exceeds the standard of the deformation control index.
3. The foundation pit support deformation control device of claim 1, wherein the control module is further configured to: and controlling the parameter acquisition module to acquire the current parameter information of all the inclination measuring points one by one, determining all inclination measuring points to be adjusted in all the inclination measuring points, and determining that the inclination measuring points to be adjusted exceed the standard of a deformation control index or need to perform rheological control.
4. The foundation pit support deformation control device according to claim 1, wherein the foundation pit support deformation control device further comprises:
a policy output module to: and outputting information of a support which is recommended to be adjusted and is corresponding to the inclinometry point to be adjusted and is closest to the excavation surface to the current inclinometry point, wherein the deformation index of the current inclinometry point exceeds the standard or the rheological control is required to be carried out.
5. The foundation pit support deformation control device of claim 4, wherein the strategy output module is further configured to:
and if the current inclination measuring point is that the deformation index exceeds the standard, and the supporting axial force of the support closest to the excavation surface corresponding to the inclination measuring point to be adjusted reaches the maximum limit value, or when the layer inclination measuring value is a negative value, outputting information for recommending the adjustment of the previous support of the support.
6. The foundation pit support deformation control device of claim 5, wherein the control module is further configured to: and after the supports corresponding to all the inclinometry points to be adjusted are adjusted for preset time, updating the inclinometry points to be adjusted, and controlling the strategy output module to output the suggestion information corresponding to the inclinometry points to be adjusted.
7. The utility model provides a foundation pit enclosure warp control system which characterized in that, foundation pit enclosure warp control system includes:
each inclination measuring rod comprises a plurality of inclination measuring sensors, each inclination measuring rod corresponds to one inclination measuring point, and each inclination measuring sensor is used for acquiring an inclination measuring value;
the foundation pit enclosure deformation control device comprises a parameter acquisition module, wherein the parameter acquisition module is used for acquiring current parameter information of a current inclination measuring point, the current parameter information comprises all inclination measuring values on the current inclination measuring point and the current excavation depth of a soil body corresponding to the current inclination measuring point, and the control module is used for determining that the current inclination measuring point is an inclination measuring point to be adjusted and determining that the inclination measuring point to be adjusted exceeds a deformation control index or needs to be subjected to rheological control according to the current parameter information.
8. The system of claim 7, wherein the apparatus further comprises:
a policy output module to: the inclinometry point to be adjusted is that the deformation index exceeds the standard or rheological control is required to be carried out, and the information of a support closest to the excavation surface corresponding to the inclinometry point to be adjusted is output and suggested to be adjusted;
the foundation pit enclosure deformation control system further comprises:
a plurality of supports, wherein each support comprises a plurality of support structures, and each support structure corresponds to one of the inclinometers; and the axial force adjusting device is used for adjusting the corresponding axial force of the supporting structure according to the information output by the strategy output module.
9. The system of claim 8, wherein the axial force adjustment device comprises a plurality of jacks, and the plurality of jacks correspond to the plurality of support structures one to one.
10. The system of claim 7, further comprising:
and the input device is connected with the foundation pit enclosure deformation control device and is used for inputting the initial parameters of the foundation pit enclosure deformation control device.
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| CN202010326614.4A CN111501860A (en) | 2020-04-23 | 2020-04-23 | Foundation pit enclosure deformation control device and system |
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| CN202010326614.4A CN111501860A (en) | 2020-04-23 | 2020-04-23 | Foundation pit enclosure deformation control device and system |
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| CN117592172A (en) * | 2024-01-18 | 2024-02-23 | 华东交通大学 | Reverse design method and system for deformation control of foundation pit support structure |
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Application publication date: 20200807 |