  Static soliton bound states in nonlinear systems are investigated
analytically and numerically in the framework of the parametrically driven,
damped nonlinear Schr\"odinger equation. We find that the ordinary differential
equations, which determine bound soliton solutions, can be transformed into the
form resembling the Schr\"odinger-like equations for eigenfunctions with the
fixed eigenvalues. We assume that a nonlinear part of the equations is close to
the reflectionless potential well occurring in the scattering problem,
associated with the integrable equations. We show that symmetric two-hump
soliton solution is quite well described analytically by the three-soliton
formula with the fixed soliton parameters, depending on the strength of
parametric pumping and the dissipation constant.
