CN107916678B - Immersed tube construction system and method based on BIM - Google Patents
Immersed tube construction system and method based on BIM Download PDFInfo
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Abstract
The immersed tube construction system based on the BIM comprises a floating transportation information acquisition unit, an installation information acquisition unit, a floating transportation data storage unit, an installation data storage unit and the like; the system further comprises a first modeling unit used for establishing the immersed tube floating BIM model according to the floating transportation shipping condition data, and a second modeling unit used for establishing the immersed tube installation BIM model according to the immersed tube installation environment, wherein the first modeling unit further dynamically updates the immersed tube floating BIM model according to the acquired immersed tube implementation floating transportation data, and the second modeling unit further dynamically updates the immersed tube installation BIM model according to the acquired immersed tube real-time installation data. The system and the method utilize BIM to establish an integral model of the whole project, can carry out visual simulation on the floating transportation process of the immersed tube and the mounting process of the immersed tube, adopt a measurement and control system to carry out acquisition of floating transportation and construction data, realize dynamic visual monitoring and recording and visual prediction of the whole construction process, and complete integral coordination guidance on the floating transportation process and the mounting process of the immersed tube.
Description
Technical Field
The invention relates to the technical field of immersed tube tunnel construction, in particular to a BIM-based immersed tube construction method.
Background
The immersed tube method is the main method for building underwater tunnels. The construction of the immersed tube mainly comprises two steps of floating transportation of the immersed tube and sinking installation of the immersed tube. The sinking pipe is transported to a designated position, is sunk on a pre-dug foundation trench, is subjected to hydraulic compression joint for underwater connection, and is then covered with soil and backfilled.
The floating course of the immersed tube is influenced by natural conditions, channel conditions, floating ships and other conditions, such as different natural conditions, different water flow speeds, different water flow directions and the like, and the floating course of the immersed tube is directly influenced. In order to realize accurate construction, the sinking index of each section of immersed tube is strictly limited, the real-time floating state under the limitation of natural conditions and the like is required to be used for guiding the specific installation of each section of immersed tube, and the installation process is adjusted timely, so that the construction quality can be ensured.
In the prior art, the process control of floating transportation and sinking installation of the sinking pipe is mostly an invisible control carried out by various detection devices. Chinese patent application publication No. CN203745863U discloses a system for monitoring floating and sinking construction of immersed tube pair to tube joint on sea, which predicts the time of construction operation by recording various parameter indexes, wind speed, water flow rate, etc. This method has the following disadvantages: firstly, the process of immersed tube construction is reflected only by the form of data, and the construction process cannot be dynamically simulated, so that the visual visualization of the construction process is realized; secondly, only the construction time can be predicted, and the follow-up construction can not be guided in real time by combining natural conditions and the real-time construction process.
Disclosure of Invention
The invention aims to provide a BIM-based immersed tube construction system and an immersed tube construction method.
In order to achieve the above purpose, the invention provides the following technical scheme:
immersed tube construction system based on BIM includes:
a floating transportation information acquisition unit: the system is used for acquiring the real-time floating transportation data of the immersed tube;
an installation information acquisition unit: the system is used for acquiring real-time installation data of the immersed tube;
a floating data storage unit: the system is used for storing the expected floating index of the immersed tube and the real-time floating data of the immersed tube;
installing a data storage unit: the system is used for storing expected installation indexes of the immersed tube and real-time installation data of the immersed tube;
a calculation unit: the system is used for comparing the immersed tube real-time floating index with the expected floating index and obtaining a floating index difference, and is used for obtaining an installation index difference according to the immersed tube real-time installation index and the expected installation index;
a first modeling unit: the system is used for establishing a immersed tube floating BIM model according to the floating shipping condition data;
a second modeling unit: the system is used for establishing a immersed tube installation BIM model according to the immersed tube installation environment;
the first modeling unit further dynamically updates the immersed tube floating BIM according to the acquired immersed tube floating implementation data, and the second modeling unit further dynamically updates the immersed tube installation BIM according to the acquired immersed tube real-time installation data.
The expected floating indexes comprise floating postures and floating speeds; the expected installation indexes comprise the installation position, the sinking speed, the sinking attitude and the like of each section of sinking pipe.
Preferably, the method comprises the following steps: the immersed tube construction system further comprises a natural condition data acquisition unit and a natural condition data storage unit for storing data acquired by the natural condition data acquisition unit, wherein the data stored by the natural condition data storage unit can be transmitted to the first modeling unit and the second modeling unit so as to update the immersed tube floating transportation model and the immersed tube installation model.
The BIM-based immersed tube construction method adopts the BIM-based immersed tube construction system, and is characterized by comprising the following steps:
the method comprises the steps of establishing a immersed tube floating BIM model according to floating shipping condition data, updating the immersed tube floating BIM model according to immersed tube real-time floating shipping data, wherein the floating shipping condition data comprise a floating shipping channel, a design channel, immersed tubes, a floating shipping ship and the like, and the floating shipping data comprise floating shipping speed. Floating attitude and position coordinates, etc.;
comparing the real-time floating transportation data of the immersed tube with a set expected floating transportation index, if the comparison result exceeds a tolerance threshold value, prompting to adjust the floating transportation index, and updating the immersed tube floating transportation model according to the adjusted real-time floating transportation index;
establishing a immersed tube installation BIM model according to an immersed tube installation environment, wherein the immersed tube installation environment comprises a foundation trench, foundation information after gravel leveling, an immersed tube sinking model and an integrated ship mooring model;
installing the Nth section of immersed tube according to a set expected installation index of the immersed tube by a default sinking strategy, detecting actual installation data of the immersed tube, and comparing the actual installation data with the expected installation index to calculate the installation index difference of the immersed tube; and when the (N + 1) th section of immersed tube is installed, the installation index difference between the 1 st section of immersed tube and the Nth section of immersed tube is calculated in an accumulated mode, the installation index difference of the (N + 1) th section of immersed tube is predicted, whether the installation index difference of the (N + 1) th section of immersed tube is within a threshold range allowed by tolerance is judged, if yes, the sinking strategy is adjusted, and if not, the immersed tube is continuously installed according to the current sinking strategy.
Preferably, the method comprises the following steps: and if the real-time floating index exceeds the expected floating index by a threshold value, adjusting the floating indexes of other immersed tubes behind the immersed tube section.
Preferably, the method comprises the following steps: and the second modeling unit simulates a sinking model of the (N + 1) th section of sinking pipe according to the set sinking index, the natural condition and the predicted difference of the installation index of the (N + 1) th section of sinking pipe.
Preferably, the construction method further comprises the following steps of updating the immersed tube floating BIM model and the immersed tube installation BIM model according to floating real-time natural condition data, and realizing dynamic updating of the models to display the floating state and the installation state of the immersed tubes in real time, wherein the real-time natural condition data comprise water level, water flow rate and water flow direction.
The invention has the beneficial effects that:
the invention provides a sinking pipe construction system and a sinking pipe construction method based on a BIM technology. The system and the method utilize BIM to establish an integral model of the whole project, can perform visual simulation on the floating transportation process of the immersed tube and the mounting process of the immersed tube, adopt a measurement and control system to acquire floating transportation and construction data, achieve dynamic visual monitoring and recording of the whole construction process, further combine natural conditions, shipping conditions and specific construction execution conditions, achieve visual prediction, generate a reasonable adjustment strategy, and complete integral coordination guidance on the floating transportation process and the mounting process of the immersed tube. The system and the method are used for immersed tube installation, so that the construction quality and the construction efficiency can be greatly improved.
Drawings
FIG. 1 is a flow chart of a floating transportation method of immersed tube;
fig. 2 is a flow chart of a method of installing a sink pipe.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings. It should be apparent that the embodiments described in the detailed description are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of the present invention.
The invention provides a immersed tube construction system and an immersed tube construction method based on BIM technology, which are used for realizing visual intelligent management of immersed tube construction.
The BIM-based immersed tube construction system can complete the visual monitoring and recording of the whole process of immersed tube floating transportation and immersed tube installation. The immersed tube construction is a construction method of underwater tunnel. The immersed tube tunnel is formed by packaging a plurality of sections of immersed tubes one by one. Before sinking pipe construction, sinking pipes are required to be manufactured on a slipway or in a dry dock, the sinking pipes are conveyed to a tunnel design position section by section through an integral ship in an underwater dredging groove, and then are sunk section by section, and adjacent sinking pipes are connected by a hydraulic compression joint method. The floating transportation of the immersed tube and the installation of the immersed tube are limited by multiple conditions such as natural conditions, geographical environment conditions, artificial construction factors and the like, and uncertain factors are more, so the two most main processes of immersed tube construction are the floating transportation of the immersed tube and the installation of the immersed tube, and the core of the immersed tube construction system based on the BIM is mainly to complete the monitoring of the two processes.
Immersed tube construction system based on BIM includes:
a floating transportation information acquisition unit: the system is used for acquiring the real-time floating transportation data of the immersed tube; the immersed tube is transported to a designated construction site through an integral ship, and the floating transportation process is influenced by multiple conditions such as different meteorological conditions, channel conditions, air route design conditions and the like, wherein the immersed tube real-time floating transportation data comprises floating transportation speed, floating transportation position coordinates, floating transportation attitude and the like, some data come from a ship-borne satellite positioning system, and some data come from sensors installed on the immersed tube or a ship body;
an installation information acquisition unit: the system is used for acquiring real-time installation data of the immersed tube; the installation data of the immersed tube is a coordinate value, and the real-time installation data of the immersed tube is used for reflecting the installation position of the immersed tube which is actually immersed;
a floating data storage unit: the system is used for storing the expected floating index of the immersed tube and the real-time floating data of the immersed tube; the floating indexes comprise floating postures and floating speeds;
installing a data storage unit: the system is used for storing expected installation indexes of the immersed tube and real-time installation data of the immersed tube; according to the design of the underwater tunnel, in the allowable error range, the installation position of each section of immersed tube is set, and the index is also a position coordinate and is called as an expected installation index of the immersed tube; the actual installation position of the immersed tube is limited by multiple conditions such as gas phase conditions, human construction factors and the like, and the actual installation position of the immersed tube is different from the expected installation position, and as mentioned above, the actual sunk position is referred to as the actual installation position;
a calculation unit: the system is used for comparing the immersed tube real-time floating index with the expected floating index and obtaining a floating index difference, and is used for obtaining an installation index difference according to the immersed tube real-time installation index and the expected installation index; the floating index difference is used for guiding the adjustment of floating operation, and the installation index difference is used for guiding the adjustment of installation operation;
natural condition data acquisition unit: for collecting data on natural conditions, such as water level, flow rate, and the like, from on-site sensors; the natural condition data storage unit stores the data acquired by the natural condition data acquisition unit, and the natural condition data can be transmitted to the first modeling unit and the second modeling unit to update the immersed tube floating transportation model and the immersed tube installation model;
a first modeling unit: the system is used for establishing a immersed tube floating BIM model according to the floating shipping condition data; the shipping condition data described herein includes floating channels, design channel boundaries, immersed tubes, and integrated vessels; the first modeling unit further dynamically updates the immersed tube floating BIM according to the acquired immersed tube floating data; meanwhile, the second modeling unit also realizes dynamic change of the floating BIM according to field data acquired by the natural data acquisition unit, realizes whole-process visual monitoring and recording and guides the floating transportation of the immersed tube;
a second modeling unit: the system is used for establishing a immersed tube installation BIM model according to the immersed tube installation environment; the second modeling unit further dynamically updates the immersed tube installation BIM according to the acquired immersed tube real-time installation data; meanwhile, the first modeling unit realizes dynamic change of the immersed tube installation BIM model according to field data acquired by the natural data acquisition unit, realizes whole-process visual monitoring and recording, and guides the immersion and butt joint of the immersed tube;
the BIM-based immersed tube construction method adopts the BIM-based immersed tube construction system, and comprises the following steps:
a floating transportation method of immersed tube.
Establishing a immersed tube floating BIM model according to floating shipping condition data, wherein the floating shipping condition data comprises a floating shipping channel, a design channel, immersed tubes, a floating shipping ship and the like; updating the immersed tube floating BIM according to floating real-time natural condition data and floating index data, wherein the natural condition data comprise a water level, a flow velocity and a flow field, and the floating index data comprise floating speed, position coordinates, posture and the like; based on the above, the BIM model of immersed tube floating transportation can realize the visualization and dynamic update of the whole immersed tube floating transportation process, and can display the actual state of the immersed tube floating transportation along with time in real time, including the speed of floating transportation, the arrived position coordinates and the posture and the like.
Comparing the real-time floating transportation data of the immersed tube with a set expected floating transportation index, if the comparison result exceeds a tolerance threshold value, prompting to adjust the floating transportation index, and updating the immersed tube floating transportation model according to the adjusted real-time floating transportation index; combining the design requirements and channel characteristics of the underwater tunnel, having specific requirements on indexes such as construction floating speed, immersed tube attitude and the like, and storing the requirements as set floating indexes in a system; the commander needs to know that all the tasks are uniformly carried out according to different navigational speeds and the designed allowable attitude information. The actual floating transportation index may be different from the set floating transportation index due to human or natural factors, and when the difference between the actual floating transportation index and the set floating transportation index is too large, the construction quality is affected. At the moment, when the comparison result of the two indexes exceeds an allowable threshold value, the system gives an early warning and records. Under the condition, constructors can control the floating transportation indexes according to working conditions, and safety and reliability of the immersed tube floating transportation construction process are guaranteed. Meanwhile, the data record is also used for prediction guidance of the floating transportation process of the next section of immersed tube and is used for guiding and adjusting the floating transportation index of the next joint so as to avoid the situation that the floating transportation index exceeds the standard under the same natural condition and shipping condition.
A method for installing immersed tube.
And establishing a immersed tube installation BIM according to an immersed tube installation environment, wherein the immersed tube installation environment comprises a foundation trench, basic information after broken stone leveling, an immersed tube sinking model, an integrated ship mooring model and the like.
Installing the Nth section of immersed tube according to a set expected installation index of the immersed tube by a default sinking strategy, detecting actual installation data of the immersed tube, and comparing the actual installation data with the expected installation index to calculate the installation index difference of the immersed tube; and when the (N + 1) th section of immersed tube is installed, accumulating and calculating the installation index difference of the 1 st to the Nth sections of immersed tubes, judging whether the index difference exceeds a tolerance threshold value, if so, adjusting the sinking strategy, and if not, continuously installing the immersed tubes according to the current sinking strategy. The sinking strategy described herein refers to the speed of sinking, angle control of sinking, and the like.
For each underwater tunnel project, the immersed tube installation index corresponds to a specific geographic coordinate value, and the system prestores the specific geographic coordinate of each immersed tube. Specifically, when the first section of immersed tube is immersed, the first section of immersed tube is immersed according to the geographical coordinate value of the first section of immersed tube, but the actual immersion position of the immersed tube is different from the set immersion index under the influence of factors such as meteorological conditions, water flow speed, immersion speed and the like, and the construction quality is influenced by the difference. When the construction of the second section of immersed tube is carried out, the index difference between the actual immersed position and the set immersed position of the first section of immersed tube is considered, and if the index difference is within the tolerance range, the immersed tube is continuously immersed at the current immersed speed; if the index difference is too large to exceed the range allowed by the threshold, the current meteorological condition and the current water flow speed are indicated, the sinking index is unqualified due to the fact that the sinking pipe is installed according to the current sinking speed, and the sinking speed needs to be adjusted or the sinking pipe installation is carried out under the condition that the meteorological condition is better. And in the third section of immersed tube installation, the average value of the installation deviation of the first section of immersed tube and the second section of immersed tube is required to be considered, whether the installation deviation of the third section of immersed tube is within the tolerance range is predicted according to the data by combining the factors such as the gas phase condition and the like according to the current sinking strategy, if so, the third section of immersed tube is continuously installed according to the set installation index and the current sinking operation, otherwise, the current sinking strategy is required to be adjusted.
And the second modeling unit simulates a sinking model of the (N + 1) th section of sinking pipe according to the set sinking index, the natural condition and the predicted difference of the installation index of the (N + 1) th section of sinking pipe. The method can realize visualization of the deviation between the sinking installation effect and the design position of all installed pipe joints, so that constructors can adjust the construction strategy in time and control construction indexes.
In the sinking process, indexes such as sinking speed, posture and the like of the sinking pipe are monitored in real time, the BIM model is updated in real time, and once exceeding the standard, an alarm is automatically given, and constructors adjust the indexes to a reasonable range.
Meanwhile, in the process of floating transportation and installation of the immersed tube, the immersed tube floating transportation BIM model and the immersed tube installation BIM model are updated according to floating transportation real-time natural condition data, dynamic updating of the models is achieved to display the floating transportation state and the installation state of the immersed tube in real time, the real-time natural condition data comprise water level, water flow velocity and water flow direction, and dynamic visual monitoring is achieved.
The system can realize the whole-process roaming, observation at different visual angles and data information checking and calling at any position of the whole old solitary tunnel project, and realize the whole-process visual monitoring and braking planning management of the immersed tube construction process.
Claims (4)
1. Immersed tube construction system based on BIM, its characterized in that includes:
a floating transportation information acquisition unit: the system is used for acquiring the real-time floating transportation data of the immersed tube;
an installation information acquisition unit: the system is used for acquiring real-time installation data of the immersed tube;
a floating data storage unit: the system is used for storing the expected floating index of the immersed tube and the real-time floating data of the immersed tube;
installing a data storage unit: the system is used for storing expected installation indexes of the immersed tube and real-time installation data of the immersed tube;
a calculation unit: the system is used for comparing the immersed tube real-time floating index with the expected floating index and obtaining a floating index difference, and is used for obtaining an installation index difference according to the immersed tube real-time installation index and the expected installation index;
the expected floating indexes comprise floating postures and floating speeds; the expected installation indexes comprise the installation position, the sinking speed and the sinking attitude of each section of sinking pipe;
a first modeling unit: the system is used for establishing a immersed tube floating BIM model according to the floating shipping condition data;
a second modeling unit: the system comprises a simulation platform, a simulation platform and a simulation platform, wherein the simulation platform is used for establishing an immersed tube installation BIM model according to an immersed tube installation environment, and simulating an immersed tube installation model of the (N + 1) th section of immersed tube according to a set immersion index, natural conditions and a predicted installation index difference of the (N + 1) th section of immersed tube;
the first modeling unit further dynamically updates the immersed tube floating BIM according to the acquired immersed tube floating implementation data, and the second modeling unit further dynamically updates the immersed tube installation BIM according to the acquired immersed tube real-time installation data;
and the immersed tube construction system adjusts the sinking speed and the sinking angle of the immersed tube according to the installation index difference of the (N + 1) th section of immersed tube and the sinking simulation model.
2. The BIM-based sinking pipe construction system of claim 1, further comprising a natural condition data collecting unit, and a natural condition data storing unit for storing the data collected by the natural condition data collecting unit, wherein the data stored in the natural condition data storing unit is transferred to the first modeling unit and the second modeling unit to update the sinking pipe floating transportation model and the sinking pipe installation model.
3. The BIM-based immersed tube construction method adopts the BIM-based immersed tube construction system of claim 1 or 2, and is characterized by comprising the following steps:
establishing a immersed tube floating BIM according to the floating transportation condition data, and updating the immersed tube floating BIM according to the immersed tube real-time floating transportation data; updating a immersed tube floating BIM model and an immersed tube installation BIM model according to floating real-time natural condition data, and realizing dynamic updating of the models to display the floating state and the installation state of the immersed tubes in real time, wherein the real-time natural condition data comprises water level, water flow speed and water flow direction;
comparing the real-time floating data of the immersed tube with a set expected floating index, if the comparison result exceeds a tolerance threshold value, prompting to adjust the floating index of the immersed tube of the section, and updating an immersed tube floating model according to the adjusted real-time floating index;
establishing a immersed tube installation BIM according to the immersed tube installation environment;
installing the Nth section of immersed tube according to a set expected installation index of the immersed tube by a default sinking strategy, detecting actual installation data of the immersed tube, and comparing the actual installation data with the expected installation index to calculate the installation index difference of the immersed tube; when the (N + 1) th section of immersed tube is installed, the installation index difference between the 1 st section of immersed tube and the Nth section of immersed tube is calculated in an accumulated mode, the installation index difference of the (N + 1) th section of immersed tube is predicted, whether the installation index difference of the (N + 1) th section of immersed tube is within a threshold value range allowed by tolerance or not is judged, if yes, an immersion strategy is adjusted, an immersion speed and an immersion angle are adjusted, and if not, the immersed tube is continuously installed according to the current immersion strategy;
and the second modeling unit simulates a sinking model of the (N + 1) th section of sinking pipe according to the set sinking index, the natural condition and the predicted difference of the installation index of the (N + 1) th section of sinking pipe.
4. The BIM-based sinking pipe construction method of claim 3, wherein if the real-time floating index exceeds the expected floating index by a threshold value, the floating index of the other sinking pipe after the sinking pipe of the section is adjusted.
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| CN113111422A (en) * | 2021-04-21 | 2021-07-13 | 中铁广州工程局集团有限公司 | Dense pile foundation pile sinking construction method combining BIM technology and reduced scale model dynamic simulation |
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| CN1242128C (en) * | 2002-08-27 | 2006-02-15 | 上海隧道工程股份有限公司 | Tunnel pipe section floating conveying, sinking and joining construction process |
| CN203745863U (en) * | 2013-12-20 | 2014-07-30 | 中交第四航务工程局有限公司 | Immersed tunnel pipe section offshore floating transportation and immersion construction work monitoring system |
| CN106400841B (en) * | 2016-11-29 | 2018-08-24 | 中交第一航务工程局有限公司 | The control system and immersed tube immersion method of immersed tube sinking |
| CN106864692A (en) * | 2017-03-22 | 2017-06-20 | 中交第航务工程局有限公司 | A kind of immersed tube towage navigation system |
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| JP2003027508A (en) * | 2001-07-12 | 2003-01-29 | Taisei Corp | Position measuring device of immersed tube |
| KR101745453B1 (en) * | 2016-10-24 | 2017-06-13 | 한국철도기술연구원 | Undersea tunnel chain tensioning device |
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