CN116607947A - Method for installing tunnel vault settlement monitoring points - Google Patents

Abstract

The invention discloses a method for installing a tunnel vault settlement monitoring point, which comprises the following steps: the jacking device comprises a telescopic rod, a jacking and a tray connecting piece, wherein the jacking is arranged at the top end of the telescopic rod and is in threaded connection with the telescopic rod; the jacking is connected with the tray connecting piece in an embedded mode; the threaded hook is in threaded connection with the tray connecting piece. The pallet connecting piece is matched with the telescopic rod and the threaded hook, so that potential safety hazards faced when monitoring personnel climb to the top of the shield tunneling machine and install monitoring points are effectively solved; the installation device of the shield tunnel vault settlement monitoring point is of a sticking type installation structure, so that the problem that the segment is inevitably damaged by the traditional drilling installation method is solved; the installation method based on the vault settlement monitoring points has higher efficiency, saves time and labor, does not need personnel to pay attention to the positions of the shield machine and the trolley at any time, can be used for arranging the vault monitoring points at any time, and effectively ensures the continuity of monitoring data.

Description

A method for installing tunnel vault settlement monitoring points

technical field

The invention relates to the technical field of shield tunnel monitoring, in particular to a method for installing tunnel vault settlement monitoring points.

Background technique

In the construction process of subway tunnels, shield tunneling construction is becoming more and more popular. It has the characteristics of small impact on the ground surface, fast construction speed, and high efficiency. However, the surrounding environment will be deformed during the advancement of the shield machine. Ground subsidence accidents caused by construction often occur, posing a huge threat to life and property. Therefore, mastering and monitoring the deformation during construction is of great significance to safe construction.

Tunnel vault settlement monitoring is a routine monitoring item during tunnel construction and operation. The electronic level method is most commonly used for measurement. The principle is to install a hook at the position of the vault segment, hang the tower ruler on the hook, and measure with a level , this method has high measurement efficiency and accurate data, but there are many difficulties in installing the hook at the vault segment, including:

1. There are great potential safety hazards in the installation of the hook; at present, the monitoring personnel climb to the top of the shield machine and the trolley for installation of the hook. Due to the poor construction environment in the section tunnel, the size of the shield machine is large, and there is no escalator. Climbing is more difficult, and mud pipes and mechanical components are installed on the upper part of the shield machine and trolley, which increases the difficulty of installation work.

2. It takes a lot of time and energy for personnel, and there is a hidden danger that the continuity of monitoring data cannot be guaranteed; because monitoring personnel need to pay attention to the advancing position of the shield machine and the trolley at all times, to avoid exceeding the monitoring section and unable to arrange vault monitoring points, It consumes a lot of time and energy of personnel. If the monitoring points are not arranged in time, it will not be possible to monitor in real time, let alone grasp the deformation of the section during the construction process in time.

The installation of the hook is cumbersome, the efficiency is low, and there is a problem of segment damage; the traditional installation method is to install the expansion bolt with hook after drilling the vault with an electric drill. The operation is cumbersome and the segment needs to be damaged.

Contents of the invention

The purpose of the present invention is to provide a method for installing tunnel vault settlement monitoring points aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of the present invention is:

A method for installing a tunnel vault settlement monitoring point, using an installation device, including: a telescopic rod, a jacking bracket and a tray connector, the jacking bracket is arranged on the top of the telescopic rod, and is threadedly connected with the telescopic rod for It is connected with the pallet connector; the jacking is embedded with the pallet connector, and is used to lift the pallet connector to the vault segment by lifting the telescopic rod;

The steps of the installation method of the tunnel vault settlement monitoring point are as follows:

Step 1. Find the installation position of the vault settlement monitoring point of the shield tunnel according to the vault segment center of the monitoring section required by the design;

Step 2, thread the jacking bracket with the telescopic rod, and thread the threaded hook with the pallet connector;

Step 3, make the bracket of the jacking bracket and the tray connecting part embedded and installed, and apply adhesive material on the surface of the tray connecting part;

Step 4, lifting the telescopic rod to bond the tray connector and the vault segment through the adhesive material;

Step 5, after the tray connector is firmly bonded to the vault segment, withdraw the telescopic rod;

Step 6: Repeat steps 1 to 5 to install other vault monitoring points on the detection end face.

In the above technical solution, a threaded connecting rod is provided at the bottom of the jacking bracket for realizing the threaded connection with the telescopic rod.

In the above technical solution, the tray connector is provided with brackets and bolt holes.

In the above technical solution, the jacking bracket is embedded and installed in the bracket, and is used for fixedly connecting the telescopic rod with the tray connector.

In the above technical solution, a threaded hook is installed in the bolt hole of the pallet connector.

In the above technical solution, the thickness of the tray connector is 1.0 cm.

In the above technical solution, the depth of the bolt hole is 5mm.

In the above technical solution, the surface of the tray connector is coated with an adhesive material.

In the above technical solution, the inner dimension of the bracket of the tray connector is the same as that of the jacking bracket.

Compared with prior art, the beneficial effect of the present invention is:

1. The tray connector of the installation device for the vault settlement monitoring point of the shield tunnel of the present invention is matched with the telescopic rod and the threaded hook to effectively solve the safety problems faced by the monitoring personnel when climbing to the top of the shield machine and the trolley for the installation of the monitoring point. Hidden danger.

2. The installation device of the vault settlement monitoring point of the shield tunnel of the present invention is an adhesive installation structure, which solves the problem of unavoidable damage to the segment in the traditional drilling installation method.

3. The installation method of the installation method of the shield tunnel vault settlement monitoring point based on the present invention has high efficiency for installing the vault monitoring point, saves time and effort, and does not require personnel to always pay attention to the position of the shield machine and the trolley, and can be deployed at any time by using it The vault monitoring point effectively guarantees the continuity of the monitoring data. The manufacturing process of each structure of the invention is mature, easy to operate, easy to carry, recyclable, and strong in controllability and practicability.

Description of drawings

Fig. 1 is a schematic structural diagram of the installation device of the vault settlement monitoring point of the shield tunnel according to the present invention.

FIG. 2 is a schematic diagram of the spatial structure of the tray connector of the present invention.

In the figure: 0-arch segment, 1-telescopic rod, 2-jack, 2-1-threaded connecting rod, 3-tray connector, 3-1-bracket, 3-2-bolt hole, 3- 3-Threaded hook.

Detailed ways

The present invention will be described in further detail below in conjunction with specific examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

An installation device for a vault settlement monitoring point of a shield tunnel, referring to Fig. 1, the installation device includes: a telescopic rod 1, a jacking bracket 2 and a tray connector 3, the jacking bracket 2 is arranged on the top of the telescopic rod 1, And threaded with the telescopic rod 1 for connecting with the tray connector 3; the jacking 2 is embedded with the tray connector 3 for lifting the pallet connector 3 to the vault tube by lifting the telescopic rod 1 At the position of sheet 0, the tray connector 3 is fixedly connected with the vault segment 0.

Further, the bottom of the jacking bracket 2 is provided with a threaded connecting rod 2 - 1 for realizing the threaded connection with the telescopic rod 1 .

Further, referring to Fig. 2, the tray connector 3 is composed of a bracket 3-1, a bolt hole 3-2 and a threaded hook 3-3, the jacking bracket 2 is embedded in the bracket 3-1, and To make the telescopic rod 1 fixedly connected with the tray connector 3; the threaded hook 3-3 is threadedly installed in the bolt hole 3-2. Wherein, the thickness of the pallet connector 3 is 1.0 cm, and the depth of the bolt hole 3-2 is 5 mm, which can prevent the threaded hook 3-3 from penetrating the upper surface of the pallet connector 3 .

Further, the surface of the tray connector 3 is coated with an adhesive material for realizing the fixed connection between the tray connector 3 and the dome segment 0 .

Further, the internal size of the bracket 3-1 of the tray connector 3 is the same as that of the jacking bracket 2, preventing the bracket 3-1 from being firmly connected with the jacking bracket 2, causing the tray connector 3 to fall, and ensuring that the tray When the connecting piece 3 is fixedly connected to the dome segment 0, the tray connecting piece 3 is evenly stressed, so that the adhesive material on the surface of the tray connecting piece 3 is fully attached to the dome segment 0.

The method for installing the tunnel vault settlement monitoring point by using the above-mentioned installation device is as follows.

Step 1, find the installation position of the vault settlement monitoring point of the shield tunnel according to the vault segment 0 center of the monitoring section required by the design;

Step 2, thread the jacking 2 with the telescopic rod 1, and thread the threaded hook 3-3 with the tray connector 3;

Step 3, make the jacking bracket 2 and the bracket groove 3-1 of the pallet connector 3 be installed embeddedly, and apply adhesive material on the surface of the pallet connector 3 .

Step 4, lift the telescopic rod 1 to make the tray connector 3 and the dome segment 0 adhere to each other through an adhesive material;

Step 5, after the tray connector 3 is firmly bonded to the dome segment 0, the telescopic rod 1 is withdrawn;

Step 6: Repeat steps 1 to 5 to install other vault monitoring points on the detection end face.

The present invention has been described as an example above, and it should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without creative labor all fall within the scope of this invention. protection scope of the invention.

Claims (9)

1. The installation method of tunnel vault settlement monitoring point is characterized in that, adopts a kind of installation device, comprises: telescopic rod, jacking bracket and tray connector, described jacking bracket is arranged on the top of telescopic rod, and with telescopic The rod is threadedly connected to the pallet connector; the jack is embedded in the pallet connector and used to lift the pallet connector to the vault segment by lifting the telescopic rod; The steps of the installation method of the tunnel vault settlement monitoring point are as follows: Step 1. Find the installation position of the vault settlement monitoring point of the shield tunnel according to the vault segment center of the monitoring section required by the design; Step 2, thread the jacking bracket with the telescopic rod, and thread the threaded hook with the pallet connector; Step 3, make the bracket of the jacking bracket and the tray connecting part embedded and installed, and apply adhesive material on the surface of the tray connecting part; Step 4, lifting the telescopic rod to bond the tray connector and the vault segment through the adhesive material; Step 5, after the tray connector is firmly bonded to the vault segment, withdraw the telescopic rod; Step 6: Repeat steps 1 to 5 to install other vault monitoring points on the detection end face. 2. The installation device according to claim 1, characterized in that, a threaded connecting rod is provided at the bottom of the jacking bracket for realizing the threaded connection with the telescoping rod. 3. The installation device according to claim 1, characterized in that brackets and bolt holes are provided on the tray connector. 4 . The installation device according to claim 3 , wherein the jacking bracket is embedded in the bracket, and is used for fixedly connecting the telescopic rod with the tray connector. 5. The installation device according to claim 3, wherein a threaded hook is installed in the bolt hole of the pallet connector. 6. The installation device according to claim 3, wherein the thickness of the tray connector is 1.0 cm. 7. The installation device according to claim 3, wherein the depth of the bolt hole is 5mm. 8. The installation device according to claim 1, wherein the surface of the tray connector is coated with an adhesive material. 9 . The installation device according to claim 1 , wherein the inner dimension of the bracket of the tray connector is the same as that of the jacking bracket.