CN108589775B - Construction method for preventing underground pipe gallery from generating differential settlement - Google Patents
Construction method for preventing underground pipe gallery from generating differential settlement Download PDFInfo
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- CN108589775B CN108589775B CN201810426801.2A CN201810426801A CN108589775B CN 108589775 B CN108589775 B CN 108589775B CN 201810426801 A CN201810426801 A CN 201810426801A CN 108589775 B CN108589775 B CN 108589775B
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000012806 monitoring device Methods 0.000 claims abstract description 20
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 18
- 238000012937 correction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 67
- 230000007246 mechanism Effects 0.000 claims description 25
- 230000008859 change Effects 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 5
- 238000007569 slipcasting Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 230000003211 malignant effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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Abstract
The invention provides a construction method for preventing an underground pipe gallery from generating differential settlement, which belongs to the technical field of building construction and comprises the following steps: the method comprises the following steps of foundation treatment, cushion layer laying, template erecting, reinforcing steel bar laying, concrete pouring, settlement correcting system installation and grouting correction, wherein when data collected by a monitoring device reach a preset critical value, a control device applies corresponding jacking force or tensioning force to underground pipe gallery ports on two sides of a joint according to the collected data to compensate stress difference between two adjacent pipe sections; when the early warning appears in the system, slip casting in the foundation of the weak department of ground to the mode of drilling for strengthen the bearing capacity of the weak department of ground, make the piping lane realize evenly subsiding. The construction method for preventing the differential settlement of the underground pipe gallery provided by the invention effectively restrains the differential settlement of the joints of the pipe gallery, reduces a large amount of later maintenance cost, and avoids the occurrence of malignant events caused by the differential settlement of the pipe gallery.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a construction method for preventing an underground pipe gallery from generating differential settlement.
Background
At present, the construction of comprehensive underground pipe galleries of various cities across the country is carried out continuously, but a series of problems occur continuously in engineering constructors due to the fact that the technology is not mature, and the consequences of settlement and dislocation are the most serious.
The settlement staggered platform is characterized in that the foundation bearing capacity between adjacent pipe sections is different due to the difference of foundation treatment or the change of geological conditions during engineering construction, the joint of the adjacent pipe sections can be different due to the difference of the foundation bearing capacity, and when the difference of the foundation bearing capacity reaches the allowable limit of a waterproof material, the waterproof material can be broken, so that water seepage or water leakage is caused. Even if the platform is settled and staggered during operation, not only a large amount of later maintenance cost is increased, but also each pipe network, cable, communication equipment and the like in the pipe gallery are displaced, damaged and even broken due to settlement, so that serious problems such as leakage, fire or urban function damage occur.
Disclosure of Invention
The invention aims to provide a construction method for preventing an underground pipe gallery from generating differential settlement, and the construction method is used for solving the technical problem of differential settlement of the underground pipe gallery in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the construction method for preventing the differential settlement of the underground pipe gallery comprises the following steps:
treating a foundation;
laying a cushion layer;
erecting a template;
laying steel bars;
pouring concrete;
installing a settlement correcting system, wherein the settlement correcting system is installed at a preset position when the strength of concrete reaches the designed strength, the settlement correcting system comprises a monitoring device which is installed at an expansion joint of two underground pipe galleries and used for acquiring signals, a correcting device which is used for receiving instructions and correcting settlement differences and a control device which is used for receiving the signals acquired by the monitoring device and sending instructions to the correcting device, and when data collected by the monitoring device reaches a preset critical value, the control device applies corresponding jacking force or tensioning force to the underground pipe gallery ports on two sides of the joint according to the collected data so as to compensate the stress difference between two adjacent pipe sections;
and grouting correction is carried out, when early warning occurs to the system, grouting is carried out in the foundation at the weak position of the foundation in a drilling mode, the bearing capacity at the weak position of the foundation is enhanced, and the pipe gallery is enabled to realize uniform settlement.
Further, monitoring device is including being used for gathering adjacent two displacement sensor subassembly of relative displacement change signal on the same horizontal plane of underground pipe gallery and being used for gathering adjacent two the inclination sensor subassembly of underground pipe gallery's height position change signal.
Further, the displacement sensor assembly comprises four longitudinal displacement sensor assemblies and one transverse displacement sensor assembly, the four longitudinal displacement sensor assemblies are uniformly distributed in the length direction of the expansion joint, the four longitudinal displacement sensor assemblies span the expansion joint and are perpendicular to the length direction of the expansion joint, and the length direction of the transverse displacement sensor assemblies is parallel to the length direction of the expansion joint.
Furthermore, each longitudinal displacement sensor assembly comprises two sliding rods which are respectively arranged at two sides of the expansion joint and are parallel to the expansion joint, and a longitudinal displacement sensor which spans the expansion joint and is connected with the two sliding rods in a sliding manner; connecting columns vertically connected with the inner wall of the underground pipe gallery are arranged at the two ends of each sliding rod;
the transverse displacement sensor assembly comprises two sliding rods which cross the expansion joint and are vertical to the expansion joint and a transverse displacement sensor which is parallel to the expansion joint and is connected with the two sliding rods in a sliding manner; two the one end that the slide bar was kept away from respectively with the different piping lane pipelines section of expansion joint both sides passes through the spliced pole and links to each other.
Furthermore, two ends of the longitudinal displacement sensor and two ends of the transverse displacement sensor are respectively provided with a sliding ring used for penetrating through the corresponding sliding rod.
Further, the inclination angle sensor assembly comprises four support columns, four base plates and inclination angle sensors, wherein the four support columns are symmetrically arranged on two sides of the expansion joint respectively and are vertically connected with the two adjacent underground pipe galleries, the four base plates are hinged to the support columns, and the inclination angle sensors are installed on the base plates.
Furthermore, the correcting device comprises a longitudinal top pull rod and a transverse top pull rod, wherein the longitudinal top pull rod is supported between the upper inner wall and the lower inner wall of the underground pipe gallery in a cross mode, the transverse top pull rod transversely spans the expansion joint, each of the two ends of the longitudinal top pull rod is hinged to the pipe orifice of the adjacent two underground pipe galleries, the two ends of the transverse top pull rod are hinged to the pipe orifice of the adjacent two underground pipe galleries, a first driving mechanism used for driving the longitudinal top pull rod to move up and down is correspondingly arranged on the inner wall close to the longitudinal top pull rod, a second driving mechanism used for driving the transverse top pull rod to move along the length direction of the underground pipe galleries is correspondingly arranged on the inner wall close to the transverse top pull rod, the control device is installed on one of the underground pipe galleries close to the expansion joint, and the displacement sensor assembly, the inclination angle sensor assembly, the first driving mechanism and the second driving mechanism are connected with the control device through lines respectively.
Furthermore, the underground pipe gallery is provided with two groups of vertical ejector rods which are arranged in a crossed mode, each group of the vertical ejector rods is arranged in a crossed mode but not connected, one end of each vertical ejector rod is hinged to the inner wall of the underground pipe gallery, the other end of each vertical ejector rod is fixedly connected with the first driving mechanism, each first driving mechanism is a hydraulic cylinder, the cylinder body of each hydraulic cylinder is hinged to the inner wall of the underground pipe gallery, the cylinder rod of each hydraulic cylinder is connected with the other end of the corresponding vertical ejector rod, and the two hydraulic cylinders in the same group are arranged on two sides of the expansion joint respectively.
Further, have four horizontal push rod, four two bisymmetry settings of horizontal push rod are in on two upper and lower inner walls of underground pipe gallery, every horizontal push rod one end with the inner wall of underground pipe gallery is articulated, second actuating mechanism is the pneumatic cylinder, the cylinder body of pneumatic cylinder with the inner wall of underground pipe gallery is articulated, the jar pole of pneumatic cylinder with corresponding the other end of horizontal push rod is connected.
Furthermore, when the reinforcing steel bars are laid, reinforcing ribs are arranged at the end heads of the underground pipe gallery, and the arrangement mode of the reinforcing steel bars is gradual change, namely the reinforcing steel bars are arranged from the middle part of the pipe section to the end heads from sparse to dense;
when reinforcing steel bars are arranged at the end heads, bases for installing the monitoring device and the correcting device are pre-buried at preset positions, and the bases are welded on the reinforcing steel bars.
The construction method for preventing the differential settlement of the underground pipe gallery has the beneficial effects that: compared with the prior art, the construction method for preventing the differential settlement of the underground pipe gallery comprises the steps of monitoring the change of various relative positions of the underground pipe gallery in a connected mode by using the monitoring device, interfering in the initial stage of small stress and only small elastic deformation of the foundation by using the settlement correcting device when the position change degree reaches the warning value, compensating the stress difference between two adjacent pipe sections, keeping the relative positions of the two adjacent pipe sections on a stable level, arranging grouting holes in the modes of pre-burying pipelines or drilling holes and the like, and grouting the weak part of the foundation at the joint of the pipe sections to enhance the bearing capacity of the foundation at the settlement part and achieve the purpose of uniform settlement of the pipe gallery.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic longitudinal structure diagram of a joint of an underground pipe gallery in a construction method for preventing the underground pipe gallery from generating differential settlement according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the lateral structure of FIG. 1;
FIG. 3 is a schematic longitudinal structural diagram of installation of a sensor assembly of the construction method for preventing differential settlement of the underground pipe gallery, provided by the embodiment of the invention;
FIG. 4 is a schematic view of the lateral structure of FIG. 3;
FIG. 5 is a schematic structural view of the tilt sensor assembly of FIG. 3;
FIG. 6 is a schematic structural view of the displacement sensor assembly of FIG. 3;
FIG. 7 is a schematic diagram of the displacement sensor of FIG. 6;
FIG. 8 is a schematic view of the construction of the slide bar of the longitudinal displacement sensor assembly of FIG. 6;
FIG. 9 is a schematic view of an installation structure of a lateral displacement sensor assembly according to an embodiment of the present invention;
FIG. 10 is a schematic view of the construction of a slide bar in the lateral displacement sensor assembly provided in FIG. 9;
FIG. 11 is a schematic view of the operation of the correction system during the sedimentation of the pipe gallery according to the embodiment of the present invention;
fig. 12 is a schematic structural diagram of a longitudinal top tension rod according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
1-soil layer; 2-a concrete layer; 3-a control device; 4-a tie rod base; 5-a longitudinal top pull rod; 6-expansion joint; 7-transverse top pull rod; 8-a tilt sensor assembly; 9-a displacement sensor assembly; 10-a tilt sensor; 11-a support column; 12-a substrate; 13-a cardan shaft; 14-a displacement sensor; 15-a slide bar; 16-connecting column; 17-a slip ring; 19-first drive mechanism.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, a construction method for preventing differential settlement of an underground pipe gallery according to the present invention will now be described. The construction method for preventing the underground pipe gallery from generating differential settlement comprises the following steps:
treating a foundation;
laying a cushion layer;
erecting a template;
laying steel bars;
pouring concrete;
the settlement correcting system is installed, when the strength of concrete reaches the designed strength, the settlement correcting system is installed at a preset position and comprises a monitoring device, a correcting device and a control device 3, the monitoring device is installed at an expansion joint 6 of two underground pipe galleries and used for acquiring signals, the correcting device is used for receiving instructions to correct settlement differences, the control device is used for receiving the signals acquired by the monitoring device and sending instructions to the correcting device, when data collected by the monitoring device reach a preset critical value, the control device 3 applies corresponding jacking force or tensioning force to underground pipe gallery ports on two sides of a joint according to the collected data to compensate stress differences between two adjacent pipe sections, and the purpose of stabilizing the joint of the pipe galleries is achieved;
and grouting correction is carried out, when early warning occurs to the system, grouting is carried out in the foundation at the weak position of the foundation in a drilling mode, the bearing capacity at the weak position of the foundation is enhanced, and the underground pipe gallery can be uniformly settled. Wherein, the weak degree of ground is described to the slip casting material according to the data that monitoring device obtained, selects different slip casting materials and quantity according to the weak degree of ground.
The invention provides a construction method for preventing differential settlement of an underground pipe gallery, which is characterized in that the settlement of pipe sections of the pipe gallery is a slow deformation process, and the stress of a foundation base at the joint of the pipe sections is increased along with the increasing inclination and the increasing sinking amplitude of the pipe sections. Afterwards, set up the slip casting hole through modes such as pre-buried pipeline or drilling, to the weak department slip casting of pipe section junction ground for reinforcing subsides department ground bearing capacity, realize the mesh that the piping lane evenly subsides. By implementing the construction method, differential settlement at the joint of the pipe gallery is effectively restrained, a large amount of later maintenance cost is reduced, and malignant events caused by differential settlement of the pipe gallery are avoided.
Further, referring to fig. 3 to fig. 10 together, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, the monitoring device includes a displacement sensor assembly 9 for acquiring a relative displacement change signal on the same horizontal plane of two adjacent underground pipe galleries, and an inclination sensor assembly 8 for acquiring a height position change signal of two adjacent underground pipe galleries. Monitoring the relative position relation of two adjacent underground pipe galleries in the altitude by using the inclination angle sensor assembly 8; the displacement sensor assembly 9 is utilized to monitor the relative position change between two adjacent underground pipe galleries on the same horizontal plane, the settlement change data of the underground pipe gallery collected by the inclination angle sensor assembly 8 and the displacement sensor assembly 9 is transmitted to the control device 3, wherein, each expansion joint 6 is provided with an inclination angle sensor component 8 and a displacement sensor component 9, both ends of the same underground pipe gallery are also provided with corresponding monitoring systems, the data of the joints of all pipe sections are transmitted to the control device 3, the control device 3 processes, analyzes and contrasts the data in a centralized way, can draw out the whole deformation condition of each pipeline section junction, controlling means 3 sends remote terminal equipment with the signal, and terminal equipment such as computer and cell-phone, monitoring personnel just can observe the change of subsiding of underground pipe gallery often, and in time take measures to revise the underground pipe gallery that takes place to warp.
Further, referring to fig. 4 to 10, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, the displacement sensor assembly 9 includes four longitudinal displacement sensor assemblies and one transverse displacement sensor assembly, the four longitudinal displacement sensor assemblies are uniformly distributed along the length direction of the expansion joint 6, the four longitudinal displacement sensor assemblies are installed across the expansion joint 6 and the length direction thereof is perpendicular to the length direction of the expansion joint 6, and the length direction of the transverse displacement sensor assembly is parallel to the length direction of the expansion joint 6. And monitoring the relative position change between two adjacent underground pipe galleries on the same horizontal plane by using the displacement sensor assembly and the transverse displacement sensor assembly so as to provide accurate data.
Further, referring to fig. 4 and 6 to 10, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, each longitudinal displacement sensor assembly includes two sliding rods 15 respectively disposed at two sides of the expansion joint 6 and parallel to the expansion joint 6, and a longitudinal displacement sensor crossing the expansion joint 6 and slidably connected to the two sliding rods 15; connecting columns 16 vertically connected with the inner wall of the underground pipe gallery are arranged at two ends of each sliding rod 15;
the transverse displacement sensor assembly comprises two sliding rods 15 which cross the expansion joint 6 and are vertical to the expansion joint 6 and a transverse displacement sensor which is parallel to the expansion joint 6 and is connected with the two sliding rods 15 in a sliding manner; and one ends of the two sliding rods 15 far away are respectively connected with different pipe gallery pipe sections on two sides of the expansion joint 6 through connecting columns 16. Herein, the lateral displacement sensor and the longitudinal displacement sensor in the lateral displacement sensor assembly and the longitudinal displacement sensor assembly are the same in structure and function, and only the installation position and direction are different, so that the reference numeral 14 is used in the figures without distinction.
Further, referring to fig. 4, 7 and 9, as a specific embodiment of the construction method for preventing differential settlement of an underground pipe gallery provided by the present invention, two ends of the longitudinal displacement sensor and the transverse displacement sensor are respectively provided with a sliding ring 17 for passing through the corresponding sliding rod 15. Slide bar 15 passes sliding ring 17, and displacement sensor can slide along slide bar 15, has certain degree of freedom, is convenient for detect underground pipe gallery's displacement volume.
Further, referring to fig. 5, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, the tilt angle sensor assembly 8 includes four support pillars 11 symmetrically arranged on two sides of the expansion joint 6 in pairs and respectively vertically connected to two adjacent underground pipe galleries, a base plate 12 hinged to the four support pillars 11, and a tilt angle sensor 10 installed on the base plate 12. Base plate 12 is articulated with support column 11 for inclination sensor 10 has certain degree of freedom, can adjust along with the deformation of underground pipe gallery, improves the accuracy of monitoring data. Wherein, inclination sensor subassembly 8 installs the roof at the underground pipe gallery, can monitor the settlement position change of two adjacent underground pipe galleries relative horizontal plane. A universal shaft 13 is arranged on the supporting column 11, and a base 4 hinged with the hinged shaft 13 is also arranged on the base plate 12.
Further, referring to fig. 1, 2 and 12, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, the correcting device includes a longitudinal top tension rod 5 supported between the upper and lower inner walls of the underground pipe gallery in a crossing manner and a transverse top tension rod 7 crossing the expansion joint 6 in a transverse manner, two ends of each longitudinal top tension rod 5 are hinged to the pipe orifices of two adjacent underground pipe galleries, two ends of each transverse top tension rod 7 are hinged to the pipe orifices of two adjacent underground pipe galleries, a first driving mechanism for driving the longitudinal top tension rod 5 to move up and down is correspondingly disposed on the inner wall close to the longitudinal top tension rod 5, a second driving mechanism for driving the transverse top tension rod 7 to move along the length direction of the underground pipe gallery is correspondingly disposed on the inner wall close to the transverse top tension rod 7, the control device 3 is installed on one of the underground pipe galleries close to the expansion joint 6, and the displacement sensor assembly, the inclination angle sensor assembly 8, the first driving mechanism and the second driving mechanism are respectively connected with the control device 3 through lines.
When the monitoring device monitors the change of various relative positions of the joints of the pipe sections, the longitudinal top pull rod 5 and the transverse top pull rod 7 are adopted for correcting the deformation, and when the position change degree reaches an alarm value, namely a limit value allowing the deformation is reached, the control device 3 sends out an instruction to enable the corresponding longitudinal top pull rod 5 or the transverse top pull rod 7 to act to correct the deformation. The system utilizes the top pull rod to intervene in the initial stage that the foundation is stressed less and only begins small elastic deformation, compensates the stress difference between two adjacent pipe sections by the top pull force of the top pull rod, enables the relative positions of the two adjacent pipe sections to be maintained on a stable level, avoids the situation that the deformation is increased and exceeds the allowable deformation range to cause the cracks and the fractures of the underground pipe gallery, and further causes serious influence on lines and pipelines in the underground pipe gallery. Wherein, be equipped with information processor and control module in controlling means 3, link to each other through wired or wireless and the terminal equipment who is used for monitoring the underground pipe gallery, information processor sends remote terminal equipment with signal transmission, and terminal equipment such as computer, cell-phone or display, the control personnel just can keep watch on the settlement change and the revise condition of underground pipe gallery often.
Further, referring to fig. 1 to 2, as a specific embodiment of the construction method for preventing differential settlement of an underground pipe gallery provided by the present invention, the construction method includes two sets of the longitudinal push pull rods 5 that are arranged in a crossing manner, each set of the longitudinal push pull rods 5 is crossed but not connected, at the same expansion joint 6 and on the same cross section of the underground pipe gallery, the two sets of the longitudinal push pull rods 5 are respectively arranged near a vertical expansion joint 6, the crossing point of the same set of the longitudinal push pull rods 5 is located right in front of the corresponding vertical expansion joint 6, one end of each longitudinal push pull rod 5 is hinged to the inner wall of the underground pipe gallery, the other end of the longitudinal push pull rod 5 is fixedly connected to the first driving mechanism 19, the first driving mechanism 19 is a hydraulic cylinder, the cylinder body of the hydraulic cylinder is hinged to the inner wall of the underground pipe gallery, the cylinder rod of the hydraulic cylinder is connected to the other end of the corresponding longitudinal push pull rod 5, the two hydraulic cylinders in the same group are respectively arranged at two sides of the expansion joint 6. The upper end and the lower end of the longitudinal top pull rod 5 are respectively supported on two inner walls which are opposite up and down of the underground pipe gallery, and the underground pipe gallery is supported. Taking fig. 11 as an example, when the top wall of the right-side underground pipe gallery is settled down to reach the warning value, the control device 3 sends a command to the first driving mechanism for controlling the longitudinal top pull rod, so that one longitudinal top pull rod 5 at the deformation position moves upward, and applies a pulling force to the lower wall of the right-side underground pipe gallery, wherein the pulling force is in the direction of two opposite arrows in fig. 11, so as to pull up the lower wall of the right-side underground pipe gallery upward, and simultaneously push up the other longitudinal top pull rod 5 upward, so as to apply a jacking force to the top wall of the right-side underground pipe gallery, and the application direction of the jacking force is in the direction of two opposite arrows in fig. 11, so as to correct the stress strain, or, when the left-side underground pipe gallery is deformed downward to reach the warning value, the underground pipe gallery cannot be deformed downward due to the support of the longitudinal top pull rod 5; and for the transverse top pull rod 7, the transverse stress generated by the longitudinal top pull rod in the force application process and the relative displacement deformation between two adjacent underground pipe galleries are corrected. And two groups of longitudinal top pull rods 5 are adopted, so that accurate correction can be realized. Wherein first actuating mechanism still can be for cylinder or electric putter, when the displacement changes, the cylinder pole is flexible to be realized the correction to the utility tunnel for the utility tunnel keeps the normal position. When the soil layer is thinner in or on the underground pipe gallery construction, when the underground pipe gallery descends, through revising the system, also can make the underground pipe gallery resume the normal position.
Further, referring to fig. 1 and fig. 2, as a specific embodiment of the construction method for preventing the differential settlement of the underground pipe gallery provided by the present invention, the construction method includes four transverse jacking rods 7, the four transverse jacking rods 7 are symmetrically arranged on the upper inner wall and the lower inner wall of the underground pipe gallery in pairs, one end of each transverse jacking rod 7 is hinged to the inner wall of the underground pipe gallery, the second driving mechanism is a hydraulic cylinder, a cylinder body of the hydraulic cylinder is hinged to the inner wall of the underground pipe gallery, and a rod of the hydraulic cylinder is connected to the other end of the corresponding transverse jacking rod 7. By adopting the four transverse top pull rods 7, the stress strain of different parts can be accurately corrected. Wherein second actuating mechanism still can be for cylinder or electric putter, when the displacement changes, the cylinder pole is flexible to be realized the correction to the underground pipe gallery for the underground pipe gallery keeps the normal position. The transverse top pull rod 7 and the longitudinal top pull rod 5 have the same structure and principle. Wherein, each hinge point is provided with a pull rod base 4.
According to the construction method, the longitudinal and transverse displacement sensor assemblies, the longitudinal and transverse top pull rods and the control devices 3 corresponding to the longitudinal and transverse top pull rods are arranged at each expansion joint 6, namely the joint of two adjacent underground pipe galleries, data of the joints of a plurality of pipe sections are collected, the data are collected from different control devices 3 and are transmitted to a background control system for comparison, changes caused by common reasons such as internal stress of the pipe galleries (generated by temperature change, self-contraction of concrete and the like) can be corrected, the system precision is improved, and false early warning caused by misjudgment is avoided.
Further, as a specific implementation manner of the construction method for preventing the differential settlement of the underground pipe gallery, reinforcing ribs are arranged at the end of the underground pipe gallery when the reinforcing steel bars are laid, and the arrangement manner of the reinforcing steel bars is in a gradual change manner, namely the middle part of each pipe section is arranged to the end in a sparse-to-dense manner;
when reinforcing steel bars are arranged at the end heads, bases for installing the monitoring device and the correcting device are pre-buried at preset positions, and the bases are welded on the reinforcing steel bars.
In the process of foundation treatment, according to the difference of geological structures, modes such as compaction, replacement and filling, cement soil pile arrangement, powder spraying pile arrangement and the like can be adopted to enhance the bearing capacity of the foundation and balance the level of the whole bearing capacity. In fig. 1, reference numeral 1 denotes a soil layer, and reference numeral 2 denotes a concrete layer.
When the cushion layer is arranged, a gravel cushion layer is paved, and a layer of mortar (such as M7.5 or M10) with proper strength and thickness is paved on the gravel cushion layer to be used for leveling and reinforcing the foundation and balance the level of the whole bearing capacity.
And after the formwork is erected, paving reinforcing steel bars. When the reinforcing steel bar is laid, reinforcing ribs are arranged at the ends of the pipe gallery, the pipe section is gradually changed from the middle to the ends of the pipe section in a reinforcing steel bar laying mode and is densely distributed, and stress cracks of the pipe gallery caused by the concrete in the force application process of the top pull rod are prevented.
When the end steel bars are arranged, a base used for installing the top pull rod, the inclination angle sensor assembly 8 and the displacement sensor assembly is pre-buried at a preset position, and the base needs to be welded on the steel bars.
Pouring concrete: after the formwork is erected, the compensating shrinkage concrete is preferably selected for pouring concrete, so that time and labor for installation due to overlarge change of the relative position of the embedded part caused by shrinkage of the concrete can be prevented, the concrete shrinkage cracks can be effectively inhibited, and the water seepage probability at the cracks or the pipe section joints is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The construction method for preventing the underground pipe gallery from generating differential settlement is characterized by comprising the following steps of: the method comprises the following steps:
treating a foundation;
laying a cushion layer;
erecting a template;
laying steel bars;
pouring concrete;
installing a settlement correcting system, wherein the settlement correcting system is installed at a preset position when the strength of concrete reaches the designed strength, the settlement correcting system comprises a monitoring device which is installed at an expansion joint of two underground pipe galleries and used for acquiring signals, a correcting device which is used for receiving instructions and correcting settlement differences and a control device which is used for receiving the signals acquired by the monitoring device and sending instructions to the correcting device, and when data collected by the monitoring device reaches a preset critical value, the control device applies corresponding jacking force or tensioning force to the underground pipe gallery ports on two sides of the joint according to the collected data so as to compensate the stress difference between two adjacent pipe sections;
grouting correction, namely grouting the foundation at the weak part of the foundation in a drilling mode when the early warning occurs to the system so as to enhance the bearing capacity of the weak part of the foundation and realize uniform settlement of the pipe gallery;
the monitoring device comprises a displacement sensor assembly for acquiring relative displacement change signals on the same horizontal plane of two adjacent underground pipe galleries and an inclination angle sensor assembly for acquiring high and low position change signals of the two adjacent underground pipe galleries;
the correcting device comprises a longitudinal top pull rod and a transverse top pull rod, wherein the longitudinal top pull rod is supported between the upper inner wall and the lower inner wall of the underground pipe gallery in a crossed manner, the transverse top pull rod transversely spans the expansion joint, two ends of each longitudinal top pull rod are respectively hinged with pipe orifices of two adjacent underground pipe galleries, two ends of the transverse top pull rod are respectively hinged with the pipe orifices of two adjacent underground pipe galleries, a first driving mechanism for driving the corresponding longitudinal top pull rod to move up and down is correspondingly arranged on the inner wall close to the longitudinal top pull rod, a second driving mechanism for driving the transverse top pull rod to move along the length direction of the underground pipe gallery is correspondingly arranged on the inner wall close to the transverse top pull rod, the control device is installed on one of the underground pipe gallery close to the expansion joint, and the displacement sensor assembly, the inclination angle sensor assembly, the first driving mechanism and the second driving mechanism are respectively connected with the control device through lines.
2. The construction method for preventing differential settlement of an underground pipe gallery according to claim 1, wherein: the displacement sensor assembly comprises four longitudinal displacement sensor assemblies and a transverse displacement sensor assembly, the longitudinal displacement sensor assemblies are uniformly distributed and span the expansion joint, the length direction of the expansion joint is perpendicular to that of the expansion joint, and the length direction of the transverse displacement sensor assemblies is parallel to that of the expansion joint.
3. The construction method for preventing differential settlement of an underground pipe gallery according to claim 2, wherein: each longitudinal displacement sensor assembly comprises two sliding rods which are respectively arranged at two sides of the expansion joint and are parallel to the expansion joint, and a longitudinal displacement sensor which spans the expansion joint and is connected with the two sliding rods in a sliding manner; connecting columns vertically connected with the inner wall of the underground pipe gallery are arranged at the two ends of each sliding rod;
the transverse displacement sensor assembly comprises two sliding rods which cross the expansion joint and are vertical to the expansion joint and a transverse displacement sensor which is parallel to the expansion joint and is connected with the two sliding rods in a sliding manner; two the one end that the slide bar was kept away from respectively with the different piping lane pipelines section of expansion joint both sides passes through the spliced pole and links to each other.
4. The construction method for preventing differential settlement of an underground pipe gallery according to claim 3, wherein: and two ends of the longitudinal displacement sensor and the two ends of the transverse displacement sensor are respectively provided with a sliding ring used for penetrating the corresponding sliding rod.
5. The construction method for preventing differential settlement of an underground pipe gallery according to claim 1, wherein: the inclination angle sensor assembly comprises four support columns, four base plates and inclination angle sensors, wherein the four support columns are symmetrically arranged on two sides of the expansion joint and are respectively vertically connected with the two adjacent underground pipe galleries, the four base plates are hinged to the support columns, and the inclination angle sensors are installed on the base plates.
6. The construction method for preventing differential settlement of an underground pipe gallery according to claim 1, wherein: the underground pipe gallery comprises two groups of longitudinal ejector pull rods which are arranged in a crossed mode, wherein each group of longitudinal ejector pull rods are arranged in a crossed mode but are not connected, one end of each longitudinal ejector pull rod is hinged to the inner wall of the underground pipe gallery, the other end of each longitudinal ejector pull rod is fixedly connected with a first driving mechanism, the first driving mechanism is a hydraulic cylinder, the cylinder body of each hydraulic cylinder is hinged to the inner wall of the underground pipe gallery, the cylinder rod of each hydraulic cylinder is connected with the other end of the corresponding longitudinal ejector pull rod, and the hydraulic cylinders of the same group are arranged on two sides of the expansion joint respectively.
7. The construction method for preventing differential settlement of an underground pipe gallery according to claim 6, wherein: have four horizontal push rod, four two bisymmetry settings of horizontal push rod are in on two upper and lower inner walls of underground pipe gallery, every horizontal push rod one end with the inner wall of underground pipe gallery is articulated, second actuating mechanism is the pneumatic cylinder, the cylinder body of pneumatic cylinder with the inner wall of underground pipe gallery is articulated, the jar pole and the corresponding of pneumatic cylinder the other end of horizontal push rod is connected.
8. The construction method for preventing differential settlement of an underground pipe gallery according to claim 1, wherein: when laying reinforcing steel bars, arranging reinforcing ribs at the end heads of the underground pipe gallery, wherein the arrangement mode of the reinforcing steel bars is gradual change, namely the reinforcing steel bars are arranged from sparse to dense from the middle part of a pipe section to the end heads;
when reinforcing steel bars are arranged at the end heads, bases for installing the monitoring device and the correcting device are pre-buried at preset positions, and the bases are welded on the reinforcing steel bars.
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| CN109750759B (en) * | 2019-03-18 | 2023-12-15 | 中国水利水电第七工程局有限公司 | Waterproof device for monitoring vertical embedded pipe and construction method thereof |
| CN111504377A (en) * | 2020-04-27 | 2020-08-07 | 江苏建筑职业技术学院 | Utility tunnel intelligent monitoring system |
| CN112647548B (en) * | 2021-01-07 | 2022-02-08 | 徐州工业职业技术学院 | Underground pipe gallery settlement corrector |
| CN112962393B (en) * | 2021-02-07 | 2022-09-27 | 中建一局集团建设发展有限公司 | Convertible ice rink process layer structure and construction method thereof |
| CN112962670B (en) * | 2021-02-19 | 2022-10-14 | 济南轨道交通集团有限公司 | Underground pipe gallery in-situ protection method |
| CN113236859B (en) * | 2021-05-25 | 2022-09-27 | 四川省交通勘察设计研究院有限公司 | Anti-settling construction method for existing pipeline |
| CN114840935B (en) * | 2022-04-14 | 2023-07-28 | 深圳市巍特环境科技股份有限公司 | Pipeline repairing method, device, equipment and storage medium |
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| CN103741605B (en) * | 2013-11-01 | 2016-05-11 | 北京市重大项目建设指挥部办公室 | Suppressing beam body produces crack and suppresses the method that beam cracks expands |
| CN104807497B (en) * | 2015-02-16 | 2017-05-17 | 中交天津港湾工程研究院有限公司 | Immersed tube tunnel construction monitoring system and construction technology thereof |
| CN206223146U (en) * | 2016-11-23 | 2017-06-06 | 广州瀚阳工程咨询有限公司 | A kind of structure junction relative settlement monitoring system based on MEMS technology |
| CN106908028B (en) * | 2017-03-21 | 2019-03-19 | 中冶华天包头设计研究总院有限公司 | Piping lane sedimentation detecting system and detection method |
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