| Along with the coastal city economy's high speed development, the massive port labor, the mole start to construct, massive encircles the sea epeirogenic project to launch gradually, recent years, moved along with the Tianjin industry strategy east with the Binhai newly developed area fast development, the land resource has become the home court sustained development the restriction factor, therefore carried on using the coastal shallow seas and tidelands encircles the sea epeirogenic project, relaxed the land resource deficiently with the economical fast development contradiction, has become one of development use shallow seas and tidelands resources development marine economy most important projects.At present the reclamation epeirogenic's method has many, blows fills in the epeirogenic to save the cost, the reduction time aspect is without doubt in the numerous methods most effective. This article take Tianjin Nankang industrial district first phase's epeirogenic project's vacuum precompression processing as a background, according to the Tianjin Port and the Tangku Binhai area many year accumulation's massive ground treatment project experiences, regarding the original putty surface below in the original soft soil level's silt, the silt argillaceous earth and blows the earth fill and so on saturated cohesive soil location, uses hits after the soft soil supposes the vertical plastic draining water board, carries on the vacuum precompression, enables the soft soil to achieve the draining water solidifying effect, eliminates the subsidence, thus enhances the soft soil the intensity, is the economical reasonable ground treatment plan.This article piles jointly through the analysis vacuum precompression and the vacuum carries the precompression epeirogenic project the project practical significance, the union project reconnaissance material, analyzes this location soil layer the project characteristic, and carries on the computation to its subsidence quantity, carries on the computation to this epeirogenic project's settlement of ground, the research vacuum precompression mechanism and the reinforcement effect, puts forward the vacuum precompression suitable condition. Take the Biot solidifying theory as the foundation, summarizes the vacuum precompression ground solidifying computation fundamental equation, introduced that uses the finite element method to carry on the vacuum precompression ground solidifying computation the unit process.The union project the measured data, uses FLAC3D to insert a minute law limitedly on the spot, carries on the three dimensional solidifying computation. Simulates the real load process, analyzes it the influence which distorts to the vacuum precompression, then can propose that enhances the vacuum precompression effect the measure and the reduced vacuum precompression ground the measure which affects to the periphery building. |
