阅读说明：本技术 一种控制新旧路基衔接处不均匀沉降的施工方法 (Construction method for controlling uneven settlement of connection part of new roadbed and old roadbed ) 是由 姜屏 张伟清 朱挺 李娜 朱旭飞 王伟 于 2020-07-08 设计创作，主要内容包括：本发明涉及道路施工技术领域,采用不均匀沉降控制装置；不均匀沉降控制装置包括抽液装置、流量压力阀、旧路基液体储存盒和新路基液体储存盒；新路基液体储存盒包括盒顶通孔、支撑板、浮球、浮杆和弹簧支座；支撑板水平设置；浮杆两端分别与支撑板及浮球固定；浮杆的杆身部可上下浮动地设置于盒顶通孔中；弹簧支座固定于新路基液体储存盒的底部；抽液装置、流量压力阀、旧路基液体储存盒和新路基液体储存盒依次连通；本发明提供一种控制新旧路基衔接处不均匀沉降的施工方法,包括如下步骤：不均匀沉降控制装置的安装；不均匀沉降控制装置的注液调试；新旧道路面层施工。本发明能够实现对新旧路基衔接处不均匀沉降进行及时且精准化的控制。(The invention relates to the technical field of road construction, and adopts an uneven settlement control device; the uneven settlement control device comprises a liquid pumping device, a flow pressure valve, an old roadbed liquid storage box and a new roadbed liquid storage box; the new roadbed liquid storage box comprises a box top through hole, a supporting plate, a floating ball, a floating rod and a spring support; the supporting plate is horizontally arranged; two ends of the floating rod are respectively fixed with the supporting plate and the floating ball; the rod body part of the floating rod can be arranged in the box top through hole in an up-and-down floating manner; the spring support is fixed at the bottom of the new roadbed liquid storage box; the liquid pumping device, the flow pressure valve, the old roadbed liquid storage box and the new roadbed liquid storage box are communicated in sequence; the invention provides a construction method for controlling uneven settlement of a connection part of a new roadbed and an old roadbed, which comprises the following steps: installing an uneven settlement control device; liquid injection debugging of the uneven settlement control device; and constructing new and old road surface layers. The invention can realize timely and accurate control of the uneven settlement at the joint of the old roadbed and the new roadbed.)

1. A construction method for controlling uneven settlement at the connection part of a new roadbed and an old roadbed is characterized in that an uneven settlement control device is adopted; the uneven settlement control device comprises a liquid pumping device, a flow pressure valve, an old roadbed liquid storage box and a new roadbed liquid storage box; the new roadbed liquid storage box comprises a box top through hole, a supporting plate, a floating ball, a floating rod and a spring support; the supporting plate is horizontally arranged; the floating rod is arranged along the vertical direction, the top end of the floating rod is fixed with the supporting plate, and the bottom end of the floating rod is fixed with the floating ball; the rod body part of the floating rod can be arranged in the box top through hole in a vertically floating manner; the spring support is fixed at the bottom of the new roadbed liquid storage box; the liquid pumping device, the flow pressure valve, the old road base liquid storage box and the new road base liquid storage box are communicated in sequence;

the construction method for controlling the uneven settlement of the connection position of the old roadbed and the new roadbed comprises the following steps:

s1 installation of the uneven settlement control device: arranging a new roadbed liquid storage box in a new roadbed base soil body, arranging an old roadbed liquid storage box in an old roadbed base soil body, and requiring the old roadbed liquid storage box and the new roadbed liquid storage box to be on the same horizontal line;

s2, liquid injection debugging of the uneven settlement control device: opening a flow pressure valve, and injecting liquid into the old road base liquid storage box and the new road base liquid storage box by using a liquid pumping device; when the supporting plate is in a critical rising state, closing the flow pressure valve and setting the critical water pressure of the flow pressure valve;

s3, construction of new and old road surface layers: and constructing new and old road surface layers on the base layer of the differential settlement control device after liquid injection debugging is finished.

2. The construction method for controlling uneven settlement at the connection of the old and new road beds as claimed in claim 1, further comprising before step S1: and excavating the old roadbed at the joint of the new roadbed and the old roadbed from the surface layer to the base layer to form a three-stage step shape.

3. The construction method for controlling uneven settlement at the junction of the old and new roadbed according to claim 1, wherein the step S1 of "setting the new roadbed liquid storage box in the new roadbed base soil body" includes: the new roadbed liquid storage box can be movably fixed in the new roadbed base soil body up and down through the spring support.

4. The construction method for controlling the uneven settlement at the connection of the old roadbed and the new roadbed as claimed in claim 3, wherein the spring support comprises a prestressed spring, a plurality of second rivet insertion holes and a plurality of second rivets; the prestressed spring is arranged along the vertical direction; the top of the prestressed spring is fixed at the center of the bottom of the new roadbed liquid storage box, and the bottom of the prestressed spring can fix the spring support in a soil body through the matching of the second rivet insertion hole and the second rivet.

5. The construction method for controlling the uneven settlement at the junction of the old and new road beds as claimed in claim 1, wherein the old road bed liquid storage box comprises a fixed support; the fixed support is welded and fixed at the bottom of the old roadbed liquid storage box;

the step S1 of "setting the old roadbed liquid storage box in the old roadbed base soil body" specifically includes: and the old roadbed liquid storage box is vertically fixed in the soil body of the old roadbed base layer through the fixed support.

6. The construction method for controlling the uneven settlement at the junction of the old and new road-bases according to claim 1, wherein the old and new liquid storage boxes are made of corrosion-resistant hard material.

7. The construction method for controlling the uneven settlement at the junction of the old roadbed and the new roadbed according to claim 6, wherein the old roadbed liquid storage box and the new roadbed liquid storage box are respectively welded by steel plates with the surface layers covered by antirust coatings; the bottom of the side surface of the old roadbed liquid storage box is provided with an old roadbed liquid storage box liquid inlet and an old roadbed liquid storage box liquid outlet; and a liquid inlet of the new road base liquid storage box is formed in the bottom of the side surface of the new road base liquid storage box.

8. The construction method for controlling the uneven settlement at the connection of the old and the new roadbed according to claim 1, wherein the liquid pumping device comprises a liquid pumping pump and an electric energy supply device; the electric energy supply device is used for supplying electric energy to the liquid pump;

step S1 further includes: the liquid pump and the electric energy supply device are arranged beside the drainage ditch or the evaporation pool of the old roadbed, and the liquid inlet pipe of the liquid pump extends into the drainage ditch or the evaporation pool of the old roadbed.

9. The construction method for controlling the uneven settlement at the connection of the old roadbed and the new roadbed as claimed in claim 8, wherein the electric energy supply device comprises a solar cell module and a socket; the solar cell module is electrically connected with the socket;

the liquid pump comprises a liquid pump motor and a liquid pump power line; the liquid pump motor is electrically connected with the socket through the liquid pump power line.

10. The construction method for controlling the uneven settlement at the connection of the old and new roadbed according to claim 1, wherein the uneven settlement control device further comprises a soft connecting pipe and a first spring; the first spring is sleeved outside the tube body of the soft connecting tube; the soft connecting pipe is used for communicating the old road base liquid storage box with the new road base liquid storage box.